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Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6

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* master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits)
  [PARISC] Use symbolic last syscall in __NR_Linux_syscalls
  [PARISC] Add missing statfs64 and fstatfs64 syscalls
  Revert "[PARISC] Optimize TLB flush on SMP systems"
  [PARISC] Compat signal fixes for 64-bit parisc
  [PARISC] Reorder syscalls to match unistd.h
  Revert "[PATCH] make kernel/signal.c:kill_proc_info() static"
  [PARISC] fix sys_rt_sigqueueinfo
  [PARISC] fix section mismatch warnings in harmony sound driver
  [PARISC] do not export get_register/set_register
  [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code
  [PARISC] convert to use CONFIG_64BIT instead of __LP64__
  [PARISC] use CONFIG_64BIT instead of __LP64__
  [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro
  [PARISC] more ENTRY(), ENDPROC(), END() conversions
  [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc
  [PARISC] Fixes /proc/cpuinfo cache output on B160L
  [PARISC] implement standard ENTRY(), END() and ENDPROC()
  [PARISC] kill ENTRY_SYS_CPUS
  [PARISC] clean up debugging printks in smp.c
  [PARISC] factor syscall_restart code out of do_signal
  ...

Fix conflict in include/linux/sched.h due to kill_proc_info() being made
publicly available to PARISC again.
This commit is contained in:
Linus Torvalds
2007-02-26 12:48:06 -08:00
parent 6572d6d7d0 1055a8af09
commit b0138a6cb7
97 changed files with 1585 additions and 1919 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/parisc/kernel/asm-offsets.c
View File

@@ -44,7 +44,7 @@
#define BLANK() asm volatile("\n->" : : )
#ifdef __LP64__
#ifdef CONFIG_64BIT
#define FRAME_SIZE 128
#else
#define FRAME_SIZE 64

188
arch/parisc/kernel/cache.c
View File

@@ -68,16 +68,6 @@ flush_cache_all_local(void)
}
EXPORT_SYMBOL(flush_cache_all_local);
/* flushes EVERYTHING (tlb & cache) */
void
flush_all_caches(void)
{
flush_cache_all();
flush_tlb_all();
}
EXPORT_SYMBOL(flush_all_caches);
void
update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
@@ -99,7 +89,7 @@ show_cache_info(struct seq_file *m)
seq_printf(m, "I-cache\t\t: %ld KB\n",
cache_info.ic_size/1024 );
if (cache_info.dc_loop == 1)
if (cache_info.dc_loop != 1)
snprintf(buf, 32, "%lu-way associative", cache_info.dc_loop);
seq_printf(m, "D-cache\t\t: %ld KB (%s%s, %s)\n",
cache_info.dc_size/1024,
@@ -270,6 +260,83 @@ void disable_sr_hashing(void)
panic("SpaceID hashing is still on!\n");
}
/* Simple function to work out if we have an existing address translation
* for a user space vma. */
static inline int translation_exists(struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn)
{
pgd_t *pgd = pgd_offset(vma->vm_mm, addr);
pmd_t *pmd;
pte_t pte;
if(pgd_none(*pgd))
return 0;
pmd = pmd_offset(pgd, addr);
if(pmd_none(*pmd) || pmd_bad(*pmd))
return 0;
/* We cannot take the pte lock here: flush_cache_page is usually
* called with pte lock already held. Whereas flush_dcache_page
* takes flush_dcache_mmap_lock, which is lower in the hierarchy:
* the vma itself is secure, but the pte might come or go racily.
*/
pte = *pte_offset_map(pmd, addr);
/* But pte_unmap() does nothing on this architecture */
/* Filter out coincidental file entries and swap entries */
if (!(pte_val(pte) & (_PAGE_FLUSH|_PAGE_PRESENT)))
return 0;
return pte_pfn(pte) == pfn;
}
/* Private function to flush a page from the cache of a non-current
* process. cr25 contains the Page Directory of the current user
* process; we're going to hijack both it and the user space %sr3 to
* temporarily make the non-current process current. We have to do
* this because cache flushing may cause a non-access tlb miss which
* the handlers have to fill in from the pgd of the non-current
* process. */
static inline void
flush_user_cache_page_non_current(struct vm_area_struct *vma,
unsigned long vmaddr)
{
/* save the current process space and pgd */
unsigned long space = mfsp(3), pgd = mfctl(25);
/* we don't mind taking interrups since they may not
* do anything with user space, but we can't
* be preempted here */
preempt_disable();
/* make us current */
mtctl(__pa(vma->vm_mm->pgd), 25);
mtsp(vma->vm_mm->context, 3);
flush_user_dcache_page(vmaddr);
if(vma->vm_flags & VM_EXEC)
flush_user_icache_page(vmaddr);
/* put the old current process back */
mtsp(space, 3);
mtctl(pgd, 25);
preempt_enable();
}
static inline void
__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
{
if (likely(vma->vm_mm->context == mfsp(3))) {
flush_user_dcache_page(vmaddr);
if (vma->vm_flags & VM_EXEC)
flush_user_icache_page(vmaddr);
} else {
flush_user_cache_page_non_current(vma, vmaddr);
}
}
void flush_dcache_page(struct page *page)
{
struct address_space *mapping = page_mapping(page);
@@ -342,7 +409,7 @@ void clear_user_page_asm(void *page, unsigned long vaddr)
#define FLUSH_THRESHOLD 0x80000 /* 0.5MB */
int parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
void parisc_setup_cache_timing(void)
void __init parisc_setup_cache_timing(void)
{
unsigned long rangetime, alltime;
unsigned long size;
@@ -366,6 +433,9 @@ void parisc_setup_cache_timing(void)
if (!parisc_cache_flush_threshold)
parisc_cache_flush_threshold = FLUSH_THRESHOLD;
if (parisc_cache_flush_threshold > cache_info.dc_size)
parisc_cache_flush_threshold = cache_info.dc_size;
printk(KERN_INFO "Setting cache flush threshold to %x (%d CPUs online)\n", parisc_cache_flush_threshold, num_online_cpus());
}
@@ -410,3 +480,97 @@ void kunmap_parisc(void *addr)
}
EXPORT_SYMBOL(kunmap_parisc);
#endif
void __flush_tlb_range(unsigned long sid, unsigned long start,
unsigned long end)
{
unsigned long npages;
npages = ((end - (start & PAGE_MASK)) + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
if (npages >= 512) /* 2MB of space: arbitrary, should be tuned */
flush_tlb_all();
else {
mtsp(sid, 1);
purge_tlb_start();
if (split_tlb) {
while (npages--) {
pdtlb(start);
pitlb(start);
start += PAGE_SIZE;
}
} else {
while (npages--) {
pdtlb(start);
start += PAGE_SIZE;
}
}
purge_tlb_end();
}
}
static void cacheflush_h_tmp_function(void *dummy)
{
flush_cache_all_local();
}
void flush_cache_all(void)
{
on_each_cpu(cacheflush_h_tmp_function, NULL, 1, 1);
}
void flush_cache_mm(struct mm_struct *mm)
{
#ifdef CONFIG_SMP
flush_cache_all();
#else
flush_cache_all_local();
#endif
}
void
flush_user_dcache_range(unsigned long start, unsigned long end)
{
if ((end - start) < parisc_cache_flush_threshold)
flush_user_dcache_range_asm(start,end);
else
flush_data_cache();
}
void
flush_user_icache_range(unsigned long start, unsigned long end)
{
if ((end - start) < parisc_cache_flush_threshold)
flush_user_icache_range_asm(start,end);
else
flush_instruction_cache();
}
void flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
int sr3;
if (!vma->vm_mm->context) {
BUG();
return;
}
sr3 = mfsp(3);
if (vma->vm_mm->context == sr3) {
flush_user_dcache_range(start,end);
flush_user_icache_range(start,end);
} else {
flush_cache_all();
}
}
void
flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn)
{
BUG_ON(!vma->vm_mm->context);
if (likely(translation_exists(vma, vmaddr, pfn)))
__flush_cache_page(vma, vmaddr);
}

19
arch/parisc/kernel/drivers.c
View File

@@ -562,12 +562,23 @@ pa_dev_attr(rev, id.hversion_rev, "0x%x\n");
pa_dev_attr_id(hversion, "0x%03x\n");
pa_dev_attr_id(sversion, "0x%05x\n");
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct parisc_device *padev = to_parisc_device(dev);
struct parisc_device_id *id = &padev->id;
return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
(u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
(u32)id->sversion);
}
static struct device_attribute parisc_device_attrs[] = {
__ATTR_RO(irq),
__ATTR_RO(hw_type),
__ATTR_RO(rev),
__ATTR_RO(hversion),
__ATTR_RO(sversion),
__ATTR_RO(modalias),
__ATTR_NULL,
};
@@ -689,7 +700,9 @@ parse_tree_node(struct device *parent, int index, struct hardware_path *modpath)
.fn = check_parent,
};
device_for_each_child(parent, &recurse_data, descend_children);
if (device_for_each_child(parent, &recurse_data, descend_children))
/* nothing */;
return d.dev;
}
@@ -835,8 +848,8 @@ static void print_parisc_device(struct parisc_device *dev)
static int count;
print_pa_hwpath(dev, hw_path);
printk(KERN_INFO "%d. %s at 0x%lx [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
++count, dev->name, dev->hpa.start, hw_path, dev->id.hw_type,
printk(KERN_INFO "%d. %s at 0x%p [%s] { %d, 0x%x, 0x%.3x, 0x%.5x }",
++count, dev->name, (void*) dev->hpa.start, hw_path, dev->id.hw_type,
dev->id.hversion_rev, dev->id.hversion, dev->id.sversion);
if (dev->num_addrs) {

241
arch/parisc/kernel/entry.S
View File

@@ -37,6 +37,8 @@
#include <asm/unistd.h>
#include <asm/thread_info.h>
#include <linux/linkage.h>
#ifdef CONFIG_64BIT
#define CMPIB cmpib,*
#define CMPB cmpb,*
@@ -648,13 +650,11 @@
* the static part of the kernel address space.
*/
.export fault_vector_20
.text
.align 4096
fault_vector_20:
ENTRY(fault_vector_20)
/* First vector is invalid (0) */
.ascii "cows can fly"
.byte 0
@@ -695,14 +695,13 @@ fault_vector_20:
def 29
def 30
def 31
END(fault_vector_20)
#ifndef CONFIG_64BIT
.export fault_vector_11
.align 2048
fault_vector_11:
ENTRY(fault_vector_11)
/* First vector is invalid (0) */
.ascii "cows can fly"
.byte 0
@@ -743,6 +742,7 @@ fault_vector_11:
def 29
def 30
def 31
END(fault_vector_11)
#endif
@@ -762,9 +762,8 @@ fault_vector_11:
#define CLONE_VM 0x100 /* Must agree with <linux/sched.h> */
#define CLONE_UNTRACED 0x00800000
.export __kernel_thread, code
.import do_fork
__kernel_thread:
ENTRY(__kernel_thread)
STREG %r2, -RP_OFFSET(%r30)
copy %r30, %r1
@@ -797,6 +796,7 @@ __kernel_thread:
ldo -PT_SZ_ALGN(%r30), %r30
bv %r0(%r2)
nop
ENDPROC(__kernel_thread)
/*
* Child Returns here
@@ -805,8 +805,7 @@ __kernel_thread:
* into task save area.
*/
.export ret_from_kernel_thread
ret_from_kernel_thread:
ENTRY(ret_from_kernel_thread)
/* Call schedule_tail first though */
BL schedule_tail, %r2
@@ -833,10 +832,10 @@ ret_from_kernel_thread:
bv %r0(%r1)
#endif
ldi 0, %r26
ENDPROC(ret_from_kernel_thread)
.import sys_execve, code
.export __execve, code
__execve:
ENTRY(__execve)
copy %r2, %r15
copy %r30, %r16
ldo PT_SZ_ALGN(%r30), %r30
@@ -856,16 +855,15 @@ __execve:
copy %r16, %r30
bv %r0(%r2)
nop
ENDPROC(__execve)
.align 4
/*
* struct task_struct *_switch_to(struct task_struct *prev,
* struct task_struct *next)
*
* switch kernel stacks and return prev */
.export _switch_to, code
_switch_to:
ENTRY(_switch_to)
STREG %r2, -RP_OFFSET(%r30)
callee_save_float
@@ -890,6 +888,7 @@ _switch_to_ret:
LDREG -RP_OFFSET(%r30), %r2
bv %r0(%r2)
copy %r26, %r28
ENDPROC(_switch_to)
/*
* Common rfi return path for interruptions, kernel execve, and
@@ -907,8 +906,7 @@ _switch_to_ret:
.align 4096
.export syscall_exit_rfi
syscall_exit_rfi:
ENTRY(syscall_exit_rfi)
mfctl %cr30,%r16
LDREG TI_TASK(%r16), %r16 /* thread_info -> task_struct */
ldo TASK_REGS(%r16),%r16
@@ -978,11 +976,36 @@ intr_check_resched:
LDREG TI_FLAGS(%r1),%r19 /* sched.h: TIF_NEED_RESCHED */
bb,<,n %r19,31-TIF_NEED_RESCHED,intr_do_resched /* forward */
.import do_notify_resume,code
intr_check_sig:
/* As above */
mfctl %cr30,%r1
LDREG TI_FLAGS(%r1),%r19 /* sched.h: TIF_SIGPENDING */
bb,<,n %r19, 31-TIF_SIGPENDING, intr_do_signal /* forward */
LDREG TI_FLAGS(%r1),%r19
ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r20
and,COND(<>) %r19, %r20, %r0
b,n intr_restore /* skip past if we've nothing to do */
/* This check is critical to having LWS
* working. The IASQ is zero on the gateway
* page and we cannot deliver any signals until
* we get off the gateway page.
*
* Only do signals if we are returning to user space
*/
LDREG PT_IASQ0(%r16), %r20
CMPIB=,n 0,%r20,intr_restore /* backward */
LDREG PT_IASQ1(%r16), %r20
CMPIB=,n 0,%r20,intr_restore /* backward */
copy %r0, %r25 /* long in_syscall = 0 */
#ifdef CONFIG_64BIT
ldo -16(%r30),%r29 /* Reference param save area */
#endif
BL do_notify_resume,%r2
copy %r16, %r26 /* struct pt_regs *regs */
b,n intr_check_sig
intr_restore:
copy %r16,%r29
@@ -1072,35 +1095,6 @@ intr_do_preempt:
b,n intr_restore /* ssm PSW_SM_I done by intr_restore */
#endif /* CONFIG_PREEMPT */
.import do_signal,code
intr_do_signal:
/*
This check is critical to having LWS
working. The IASQ is zero on the gateway
page and we cannot deliver any signals until
we get off the gateway page.
Only do signals if we are returning to user space
*/
LDREG PT_IASQ0(%r16), %r20
CMPIB= 0,%r20,intr_restore /* backward */
nop
LDREG PT_IASQ1(%r16), %r20
CMPIB= 0,%r20,intr_restore /* backward */
nop
copy %r0, %r24 /* unsigned long in_syscall */
copy %r16, %r25 /* struct pt_regs *regs */
#ifdef CONFIG_64BIT
ldo -16(%r30),%r29 /* Reference param save area */
#endif
BL do_signal,%r2
copy %r0, %r26 /* sigset_t *oldset = NULL */
b intr_check_sig
nop
/*
* External interrupts.
*/
@@ -1115,11 +1109,7 @@ intr_extint:
mfctl %cr31,%r1
copy %r30,%r17
/* FIXME! depi below has hardcoded idea of interrupt stack size (32k)*/
#ifdef CONFIG_64BIT
depdi 0,63,15,%r17
#else
depi 0,31,15,%r17
#endif
DEPI 0,31,15,%r17
CMPB=,n %r1,%r17,2f
get_stack_use_cr31
b,n 3f
@@ -1148,13 +1138,12 @@ intr_extint:
b do_cpu_irq_mask
ldo R%intr_return(%r2), %r2 /* return to intr_return, not here */
ENDPROC(syscall_exit_rfi)
/* Generic interruptions (illegal insn, unaligned, page fault, etc) */
.export intr_save, code /* for os_hpmc */
intr_save:
ENTRY(intr_save) /* for os_hpmc */
mfsp %sr7,%r16
CMPIB=,n 0,%r16,1f
get_stack_use_cr30
@@ -1229,6 +1218,7 @@ skip_save_ior:
b handle_interruption
ldo R%intr_check_sig(%r2), %r2
ENDPROC(intr_save)
/*
@@ -1814,9 +1804,7 @@ dtlb_fault:
LDREG PT_GR18(\regs),%r18
.endm
.export sys_fork_wrapper
.export child_return
sys_fork_wrapper:
ENTRY(sys_fork_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
ldo TASK_REGS(%r1),%r1
reg_save %r1
@@ -1853,9 +1841,10 @@ wrapper_exit:
ldi __NR_fork,%r20
bv %r0(%r2)
STREG %r20,PT_GR20(%r1)
ENDPROC(sys_fork_wrapper)
/* Set the return value for the child */
child_return:
ENTRY(child_return)
BL schedule_tail, %r2
nop
@@ -1863,10 +1852,10 @@ child_return:
LDREG TASK_PT_GR19(%r1),%r2
b wrapper_exit
copy %r0,%r28
ENDPROC(child_return)
.export sys_clone_wrapper
sys_clone_wrapper:
ENTRY(sys_clone_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1),%r1 /* get pt regs */
reg_save %r1
@@ -1887,9 +1876,10 @@ sys_clone_wrapper:
b wrapper_exit
LDREG -RP_OFFSET-FRAME_SIZE(%r30),%r2
ENDPROC(sys_clone_wrapper)
.export sys_vfork_wrapper
sys_vfork_wrapper:
ENTRY(sys_vfork_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1),%r1 /* get pt regs */
reg_save %r1
@@ -1910,6 +1900,7 @@ sys_vfork_wrapper:
b wrapper_exit
LDREG -RP_OFFSET-FRAME_SIZE(%r30),%r2
ENDPROC(sys_vfork_wrapper)
.macro execve_wrapper execve
@@ -1946,22 +1937,19 @@ error_\execve:
nop
.endm
.export sys_execve_wrapper
.import sys_execve
sys_execve_wrapper:
ENTRY(sys_execve_wrapper)
execve_wrapper sys_execve
ENDPROC(sys_execve_wrapper)
#ifdef CONFIG_64BIT
.export sys32_execve_wrapper
.import sys32_execve
sys32_execve_wrapper:
ENTRY(sys32_execve_wrapper)
execve_wrapper sys32_execve
ENDPROC(sys32_execve_wrapper)
#endif
.export sys_rt_sigreturn_wrapper
sys_rt_sigreturn_wrapper:
ENTRY(sys_rt_sigreturn_wrapper)
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r26
ldo TASK_REGS(%r26),%r26 /* get pt regs */
/* Don't save regs, we are going to restore them from sigcontext. */
@@ -1989,9 +1977,9 @@ sys_rt_sigreturn_wrapper:
*/
bv %r0(%r2)
LDREG PT_GR28(%r1),%r28 /* reload original r28 for syscall_exit */
ENDPROC(sys_rt_sigreturn_wrapper)
.export sys_sigaltstack_wrapper
sys_sigaltstack_wrapper:
ENTRY(sys_sigaltstack_wrapper)
/* Get the user stack pointer */
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1),%r24 /* get pt regs */
@@ -1999,10 +1987,10 @@ sys_sigaltstack_wrapper:
STREG %r2, -RP_OFFSET(%r30)
#ifdef CONFIG_64BIT
ldo FRAME_SIZE(%r30), %r30
b,l do_sigaltstack,%r2
BL do_sigaltstack,%r2
ldo -16(%r30),%r29 /* Reference param save area */
#else
bl do_sigaltstack,%r2
BL do_sigaltstack,%r2
ldo FRAME_SIZE(%r30), %r30
#endif
@@ -2010,53 +1998,26 @@ sys_sigaltstack_wrapper:
LDREG -RP_OFFSET(%r30), %r2
bv %r0(%r2)
nop
ENDPROC(sys_sigaltstack_wrapper)
#ifdef CONFIG_64BIT
.export sys32_sigaltstack_wrapper
sys32_sigaltstack_wrapper:
ENTRY(sys32_sigaltstack_wrapper)
/* Get the user stack pointer */
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r24
LDREG TASK_PT_GR30(%r24),%r24
STREG %r2, -RP_OFFSET(%r30)
ldo FRAME_SIZE(%r30), %r30
b,l do_sigaltstack32,%r2
BL do_sigaltstack32,%r2
ldo -16(%r30),%r29 /* Reference param save area */
ldo -FRAME_SIZE(%r30), %r30
LDREG -RP_OFFSET(%r30), %r2
bv %r0(%r2)
nop
ENDPROC(sys32_sigaltstack_wrapper)
#endif
.export sys_rt_sigsuspend_wrapper
sys_rt_sigsuspend_wrapper:
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
ldo TASK_REGS(%r1),%r24
reg_save %r24
STREG %r2, -RP_OFFSET(%r30)
#ifdef CONFIG_64BIT
ldo FRAME_SIZE(%r30), %r30
b,l sys_rt_sigsuspend,%r2
ldo -16(%r30),%r29 /* Reference param save area */
#else
bl sys_rt_sigsuspend,%r2
ldo FRAME_SIZE(%r30), %r30
#endif
ldo -FRAME_SIZE(%r30), %r30
LDREG -RP_OFFSET(%r30), %r2
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
ldo TASK_REGS(%r1),%r1
reg_restore %r1
bv %r0(%r2)
nop
.export syscall_exit
syscall_exit:
ENTRY(syscall_exit)
/* NOTE: HP-UX syscalls also come through here
* after hpux_syscall_exit fixes up return
* values. */
@@ -2119,9 +2080,35 @@ syscall_check_resched:
LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19 /* long */
bb,<,n %r19, 31-TIF_NEED_RESCHED, syscall_do_resched /* forward */
.import do_signal,code
syscall_check_sig:
LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19 /* get ti flags */
bb,<,n %r19, 31-TIF_SIGPENDING, syscall_do_signal /* forward */
LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19
ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r26
and,COND(<>) %r19, %r26, %r0
b,n syscall_restore /* skip past if we've nothing to do */
syscall_do_signal:
/* Save callee-save registers (for sigcontext).
* FIXME: After this point the process structure should be
* consistent with all the relevant state of the process
* before the syscall. We need to verify this.
*/
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1), %r26 /* struct pt_regs *regs */
reg_save %r26
#ifdef CONFIG_64BIT
ldo -16(%r30),%r29 /* Reference param save area */
#endif
BL do_notify_resume,%r2
ldi 1, %r25 /* long in_syscall = 1 */
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1), %r20 /* reload pt_regs */
reg_restore %r20
b,n syscall_check_sig
syscall_restore:
/* Are we being ptraced? */
@@ -2259,31 +2246,10 @@ syscall_do_resched:
#endif
b syscall_check_bh /* if resched, we start over again */
nop
ENDPROC(syscall_exit)
.import do_signal,code
syscall_do_signal:
/* Save callee-save registers (for sigcontext).
FIXME: After this point the process structure should be
consistent with all the relevant state of the process
before the syscall. We need to verify this. */
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1), %r25 /* struct pt_regs *regs */
reg_save %r25
ldi 1, %r24 /* unsigned long in_syscall */
#ifdef CONFIG_64BIT
ldo -16(%r30),%r29 /* Reference param save area */
#endif
BL do_signal,%r2
copy %r0, %r26 /* sigset_t *oldset = NULL */
LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
ldo TASK_REGS(%r1), %r20 /* reload pt_regs */
reg_restore %r20
b,n syscall_check_sig
get_register:
/*
* get_register is used by the non access tlb miss handlers to
* copy the value of the general register specified in r8 into
@@ -2294,8 +2260,6 @@ syscall_do_signal:
* a -1 in it, but that is OK, it just means that we will have
* to use the slow path instead).
*/
get_register:
blr %r8,%r0
nop
bv %r0(%r25) /* r0 */
@@ -2363,13 +2327,13 @@ get_register:
bv %r0(%r25) /* r31 */
copy %r31,%r1
set_register:
/*
* set_register is used by the non access tlb miss handlers to
* copy the value of r1 into the general register specified in
* r8.
*/
set_register:
blr %r8,%r0
nop
bv %r0(%r25) /* r0 (silly, but it is a place holder) */
@@ -2436,3 +2400,4 @@ set_register:
copy %r1,%r30
bv %r0(%r25) /* r31 */
copy %r1,%r31

26
arch/parisc/kernel/firmware.c
View File

@@ -74,7 +74,7 @@ static DEFINE_SPINLOCK(pdc_lock);
static unsigned long pdc_result[32] __attribute__ ((aligned (8)));
static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
#ifdef __LP64__
#ifdef CONFIG_64BIT
#define WIDE_FIRMWARE 0x1
#define NARROW_FIRMWARE 0x2
@@ -94,12 +94,12 @@ int parisc_narrow_firmware __read_mostly = 1;
* when running a 64-bit kernel on such boxes (e.g. C200 or C360).
*/
#ifdef __LP64__
#ifdef CONFIG_64BIT
long real64_call(unsigned long function, ...);
#endif
long real32_call(unsigned long function, ...);
#ifdef __LP64__
#ifdef CONFIG_64BIT
# define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc
# define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args)
#else
@@ -117,7 +117,7 @@ long real32_call(unsigned long function, ...);
*/
static unsigned long f_extend(unsigned long address)
{
#ifdef __LP64__
#ifdef CONFIG_64BIT
if(unlikely(parisc_narrow_firmware)) {
if((address & 0xff000000) == 0xf0000000)
return 0xf0f0f0f000000000UL | (u32)address;
@@ -139,7 +139,7 @@ static unsigned long f_extend(unsigned long address)
*/
static void convert_to_wide(unsigned long *addr)
{
#ifdef __LP64__
#ifdef CONFIG_64BIT
int i;
unsigned int *p = (unsigned int *)addr;
@@ -158,7 +158,7 @@ static void convert_to_wide(unsigned long *addr)
*/
void __init set_firmware_width(void)
{
#ifdef __LP64__
#ifdef CONFIG_64BIT
int retval;
unsigned long flags;
@@ -238,7 +238,7 @@ int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_inf
*
* Must be correctly formatted or expect system crash
*/
#ifdef __LP64__
#ifdef CONFIG_64BIT
int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
{
int retval = 0;
@@ -949,7 +949,7 @@ int pdc_tod_set(unsigned long sec, unsigned long usec)
}
EXPORT_SYMBOL(pdc_tod_set);
#ifdef __LP64__
#ifdef CONFIG_64BIT
int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
struct pdc_memory_table *tbl, unsigned long entries)
{
@@ -965,7 +965,7 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
return retval;
}
#endif /* __LP64__ */
#endif /* CONFIG_64BIT */
/* FIXME: Is this pdc used? I could not find type reference to ftc_bitmap
* so I guessed at unsigned long. Someone who knows what this does, can fix
@@ -1204,7 +1204,7 @@ int pdc_sti_call(unsigned long func, unsigned long flags,
}
EXPORT_SYMBOL(pdc_sti_call);
#ifdef __LP64__
#ifdef CONFIG_64BIT
/**
* pdc_pat_cell_get_number - Returns the cell number.
* @cell_info: The return buffer.
@@ -1387,7 +1387,7 @@ int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val)
return retval;
}
#endif /* __LP64__ */
#endif /* CONFIG_64BIT */
/***************** 32-bit real-mode calls ***********/
@@ -1445,7 +1445,7 @@ long real32_call(unsigned long fn, ...)
return real32_call_asm(&real_stack.sp, &real_stack.arg0, fn);
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
/***************** 64-bit real-mode calls ***********/
struct wide_stack {
@@ -1496,5 +1496,5 @@ long real64_call(unsigned long fn, ...)
return real64_call_asm(&real64_stack.sp, &real64_stack.arg0, fn);
}
#endif /* __LP64__ */
#endif /* CONFIG_64BIT */

15
arch/parisc/kernel/head.S
View File

@@ -2,7 +2,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999 by Helge Deller
* Copyright (C) 1999-2007 by Helge Deller <deller@gmx.de>
* Copyright 1999 SuSE GmbH (Philipp Rumpf)
* Copyright 1999 Philipp Rumpf (prumpf@tux.org)
* Copyright 2000 Hewlett Packard (Paul Bame, bame@puffin.external.hp.com)
@@ -19,16 +19,17 @@
#include <asm/assembly.h>
#include <asm/pgtable.h>
#include <linux/linkage.h>
.level LEVEL
.data
.export boot_args
boot_args:
ENTRY(boot_args)
.word 0 /* arg0 */
.word 0 /* arg1 */
.word 0 /* arg2 */
.word 0 /* arg3 */
END(boot_args)
.text
.align 4
@@ -38,10 +39,9 @@ boot_args:
.import fault_vector_11,code /* IVA parisc 1.1 32 bit */
.import $global$ /* forward declaration */
#endif /*!CONFIG_64BIT*/
.export stext
.export _stext,data /* Kernel want it this way! */
_stext:
stext:
ENTRY(stext)
.proc
.callinfo
@@ -343,6 +343,9 @@ smp_slave_stext:
.procend
#endif /* CONFIG_SMP */
ENDPROC(stext)
#ifndef CONFIG_64BIT
.data

16
arch/parisc/kernel/hpmc.S
View File

@@ -46,6 +46,8 @@
#include <asm/assembly.h>
#include <asm/pdc.h>
#include <linux/linkage.h>
/*
* stack for os_hpmc, the HPMC handler.
* buffer for IODC procedures (for the HPMC handler).
@@ -69,17 +71,15 @@ hpmc_raddr:
#define HPMC_PIM_DATA_SIZE 896 /* Enough to hold all architected 2.0 state */
.export hpmc_pim_data, data
.align 8
hpmc_pim_data:
ENTRY(hpmc_pim_data)
.block HPMC_PIM_DATA_SIZE
END(hpmc_pim_data)
.text
.export os_hpmc, code
.import intr_save, code
os_hpmc:
ENTRY(os_hpmc)
/*
* registers modified:
@@ -294,11 +294,9 @@ os_hpmc_6:
b .
nop
ENDPROC(os_hpmc)
/* this label used to compute os_hpmc checksum */
.export os_hpmc_end, code
os_hpmc_end:
ENTRY(os_hpmc_end)
nop

10
arch/parisc/kernel/inventory.c
View File

@@ -47,7 +47,7 @@ void __init setup_pdc(void)
struct pdc_system_map_mod_info module_result;
struct pdc_module_path module_path;
struct pdc_model model;
#ifdef __LP64__
#ifdef CONFIG_64BIT
struct pdc_pat_cell_num cell_info;
#endif
@@ -73,7 +73,7 @@ void __init setup_pdc(void)
* clearer message.
*/
#ifdef __LP64__
#ifdef CONFIG_64BIT
status = pdc_pat_cell_get_number(&cell_info);
if (status == PDC_OK) {
pdc_type = PDC_TYPE_PAT;
@@ -152,7 +152,7 @@ static void __init pagezero_memconfig(void)
npmem_ranges = 1;
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
/* All of the PDC PAT specific code is 64-bit only */
@@ -408,13 +408,13 @@ static void __init sprockets_memconfig(void)
}
}
#else /* !__LP64__ */
#else /* !CONFIG_64BIT */
#define pat_inventory() do { } while (0)
#define pat_memconfig() do { } while (0)
#define sprockets_memconfig() pagezero_memconfig()
#endif /* !__LP64__ */
#endif /* !CONFIG_64BIT */
#ifndef CONFIG_PA20

6
arch/parisc/kernel/irq.c
View File

@@ -336,11 +336,7 @@ unsigned int txn_alloc_data(unsigned int virt_irq)
static inline int eirr_to_irq(unsigned long eirr)
{
#ifdef CONFIG_64BIT
int bit = fls64(eirr);
#else
int bit = fls(eirr);
#endif
int bit = fls_long(eirr);
return (BITS_PER_LONG - bit) + TIMER_IRQ;
}

23
arch/parisc/kernel/module.c
View File

@@ -46,6 +46,7 @@
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/bug.h>
#include <asm/unwind.h>
@@ -96,7 +97,7 @@ static inline int in_local_section(struct module *me, void *loc, void *dot)
}
#ifndef __LP64__
#ifndef CONFIG_64BIT
struct got_entry {
Elf32_Addr addr;
};
@@ -176,7 +177,7 @@ void *module_alloc(unsigned long size)
return vmalloc(size);
}
#ifndef __LP64__
#ifndef CONFIG_64BIT
static inline unsigned long count_gots(const Elf_Rela *rela, unsigned long n)
{
return 0;
@@ -319,7 +320,7 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr,
return 0;
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
{
unsigned int i;
@@ -342,9 +343,9 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
value);
return i * sizeof(struct got_entry);
}
#endif /* __LP64__ */
#endif /* CONFIG_64BIT */
#ifdef __LP64__
#ifdef CONFIG_64BIT
static Elf_Addr get_fdesc(struct module *me, unsigned long value)
{
Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
@@ -368,7 +369,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value)
fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
return (Elf_Addr)fdesc;
}
#endif /* __LP64__ */
#endif /* CONFIG_64BIT */
enum elf_stub_type {
ELF_STUB_GOT,
@@ -394,7 +395,7 @@ static Elf_Addr get_stub(struct module *me, unsigned long value, long addend,
i * sizeof(struct stub_entry);
}
#ifndef __LP64__
#ifndef CONFIG_64BIT
/* for 32-bit the stub looks like this:
* ldil L'XXX,%r1
* be,n R'XXX(%sr4,%r1)
@@ -472,7 +473,7 @@ int apply_relocate(Elf_Shdr *sechdrs,
return -ENOEXEC;
}
#ifndef __LP64__
#ifndef CONFIG_64BIT
int apply_relocate_add(Elf_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
@@ -822,7 +823,8 @@ int module_finalize(const Elf_Ehdr *hdr,
me->name, strtab, symhdr);
if(me->arch.got_count > MAX_GOTS) {
printk(KERN_ERR "%s: Global Offset Table overflow (used %ld, allowed %d\n", me->name, me->arch.got_count, MAX_GOTS);
printk(KERN_ERR "%s: Global Offset Table overflow (used %ld, allowed %d)\n",
me->name, me->arch.got_count, MAX_GOTS);
return -EINVAL;
}
@@ -850,10 +852,11 @@ int module_finalize(const Elf_Ehdr *hdr,
nsyms = newptr - (Elf_Sym *)symhdr->sh_addr;
DEBUGP("NEW num_symtab %lu\n", nsyms);
symhdr->sh_size = nsyms * sizeof(Elf_Sym);
return 0;
return module_bug_finalize(hdr, sechdrs, me);
}
void module_arch_cleanup(struct module *mod)
{
deregister_unwind_table(mod);
module_bug_cleanup(mod);
}

89
arch/parisc/kernel/pacache.S
View File

@@ -27,31 +27,21 @@
*/
#ifdef CONFIG_64BIT
#define ADDIB addib,*
#define CMPB cmpb,*
#define ANDCM andcm,*
.level 2.0w
#else
#define ADDIB addib,
#define CMPB cmpb,
#define ANDCM andcm
.level 2.0
#endif
#include <asm/psw.h>
#include <asm/assembly.h>
#include <asm/pgtable.h>
#include <asm/cache.h>
#include <linux/linkage.h>
.text
.align 128
.export flush_tlb_all_local,code
flush_tlb_all_local:
ENTRY(flush_tlb_all_local)
.proc
.callinfo NO_CALLS
.entry
@@ -200,11 +190,11 @@ fdtdone:
.exit
.procend
ENDPROC(flush_tlb_all_local)
.export flush_instruction_cache_local,code
.import cache_info,data
flush_instruction_cache_local:
ENTRY(flush_instruction_cache_local)
.proc
.callinfo NO_CALLS
.entry
@@ -241,11 +231,11 @@ fisync:
.exit
.procend
ENDPROC(flush_instruction_cache_local)
.export flush_data_cache_local, code
.import cache_info, data
flush_data_cache_local:
ENTRY(flush_data_cache_local)
.proc
.callinfo NO_CALLS
.entry
@@ -283,11 +273,11 @@ fdsync:
.exit
.procend
ENDPROC(flush_data_cache_local)
.export copy_user_page_asm,code
.align 16
copy_user_page_asm:
ENTRY(copy_user_page_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -409,6 +399,7 @@ copy_user_page_asm:
.exit
.procend
ENDPROC(copy_user_page_asm)
/*
* NOTE: Code in clear_user_page has a hard coded dependency on the
@@ -446,9 +437,7 @@ copy_user_page_asm:
* lobby for such a change.
*/
.export copy_user_page_asm,code
copy_user_page_asm:
ENTRY(copy_user_page_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -534,11 +523,10 @@ copy_user_page_asm:
.exit
.procend
ENDPROC(copy_user_page_asm)
#endif
.export __clear_user_page_asm,code
__clear_user_page_asm:
ENTRY(__clear_user_page_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -618,10 +606,9 @@ __clear_user_page_asm:
.exit
.procend
ENDPROC(__clear_user_page_asm)
.export flush_kernel_dcache_page_asm
flush_kernel_dcache_page_asm:
ENTRY(flush_kernel_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -662,10 +649,9 @@ flush_kernel_dcache_page_asm:
.exit
.procend
ENDPROC(flush_kernel_dcache_page_asm)
.export flush_user_dcache_page
flush_user_dcache_page:
ENTRY(flush_user_dcache_page)
.proc
.callinfo NO_CALLS
.entry
@@ -706,10 +692,9 @@ flush_user_dcache_page:
.exit
.procend
ENDPROC(flush_user_dcache_page)
.export flush_user_icache_page
flush_user_icache_page:
ENTRY(flush_user_icache_page)
.proc
.callinfo NO_CALLS
.entry
@@ -750,11 +735,10 @@ flush_user_icache_page:
.exit
.procend
ENDPROC(flush_user_icache_page)
.export purge_kernel_dcache_page
purge_kernel_dcache_page:
ENTRY(purge_kernel_dcache_page)
.proc
.callinfo NO_CALLS
.entry
@@ -794,15 +778,14 @@ purge_kernel_dcache_page:
.exit
.procend
ENDPROC(purge_kernel_dcache_page)
#if 0
/* Currently not used, but it still is a possible alternate
* solution.
*/
.export flush_alias_page
flush_alias_page:
ENTRY(flush_alias_page)
.proc
.callinfo NO_CALLS
.entry
@@ -882,10 +865,9 @@ flush_user_dcache_range_asm:
.exit
.procend
ENDPROC(flush_alias_page)
.export flush_kernel_dcache_range_asm
flush_kernel_dcache_range_asm:
ENTRY(flush_kernel_dcache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -905,10 +887,9 @@ flush_kernel_dcache_range_asm:
.exit
.procend
ENDPROC(flush_kernel_dcache_range_asm)
.export flush_user_icache_range_asm
flush_user_icache_range_asm:
ENTRY(flush_user_icache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -927,10 +908,9 @@ flush_user_icache_range_asm:
.exit
.procend
ENDPROC(flush_user_icache_range_asm)
.export flush_kernel_icache_page
flush_kernel_icache_page:
ENTRY(flush_kernel_icache_page)
.proc
.callinfo NO_CALLS
.entry
@@ -971,10 +951,9 @@ flush_kernel_icache_page:
.exit
.procend
ENDPROC(flush_kernel_icache_page)
.export flush_kernel_icache_range_asm
flush_kernel_icache_range_asm:
ENTRY(flush_kernel_icache_range_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -992,14 +971,13 @@ flush_kernel_icache_range_asm:
nop
.exit
.procend
ENDPROC(flush_kernel_icache_range_asm)
/* align should cover use of rfi in disable_sr_hashing_asm and
* srdis_done.
*/
.align 256
.export disable_sr_hashing_asm,code
disable_sr_hashing_asm:
ENTRY(disable_sr_hashing_asm)
.proc
.callinfo NO_CALLS
.entry
@@ -1088,5 +1066,6 @@ srdis_done:
.exit
.procend
ENDPROC(disable_sr_hashing_asm)
.end

10
arch/parisc/kernel/parisc_ksyms.c
View File

@@ -7,7 +7,7 @@
* Copyright (C) 2001-2003 Grant Grundler <grundler with parisc-linux.org>
* Copyright (C) 2002-2003 Matthew Wilcox <willy at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq at parisc-linux.org>
* Copyright (C) 2002-2003 Helge Deller <deller with parisc-linux.org>
* Copyright (C) 2002-2007 Helge Deller <deller with parisc-linux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -38,7 +38,7 @@ EXPORT_SYMBOL(__cmpxchg_u32);
#ifdef CONFIG_SMP
EXPORT_SYMBOL(__atomic_hash);
#endif
#ifdef __LP64__
#ifdef CONFIG_64BIT
EXPORT_SYMBOL(__xchg64);
EXPORT_SYMBOL(__cmpxchg_u64);
#endif
@@ -58,7 +58,7 @@ EXPORT_SYMBOL(fixup_get_user_skip_2);
EXPORT_SYMBOL(fixup_put_user_skip_1);
EXPORT_SYMBOL(fixup_put_user_skip_2);
#ifndef __LP64__
#ifndef CONFIG_64BIT
/* Needed so insmod can set dp value */
extern int $global$;
EXPORT_SYMBOL($global$);
@@ -135,7 +135,7 @@ EXPORT_SYMBOL(__muldi3);
asmlinkage void * __canonicalize_funcptr_for_compare(void *);
EXPORT_SYMBOL(__canonicalize_funcptr_for_compare);
#ifdef __LP64__
#ifdef CONFIG_64BIT
extern void __divdi3(void);
extern void __udivdi3(void);
extern void __umoddi3(void);
@@ -147,7 +147,7 @@ EXPORT_SYMBOL(__umoddi3);
EXPORT_SYMBOL(__moddi3);
#endif
#ifndef __LP64__
#ifndef CONFIG_64BIT
extern void $$dyncall(void);
EXPORT_SYMBOL($$dyncall);
#endif

2
arch/parisc/kernel/pci-dma.c
View File

@@ -342,7 +342,7 @@ pcxl_dma_init(void)
pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
get_order(pcxl_res_size));
memset(pcxl_res_map, 0, pcxl_res_size);
proc_gsc_root = proc_mkdir("gsc", 0);
proc_gsc_root = proc_mkdir("gsc", NULL);
if (!proc_gsc_root)
printk(KERN_WARNING
"pcxl_dma_init: Unable to create gsc /proc dir entry\n");

4
arch/parisc/kernel/pci.c
View File

@@ -200,8 +200,8 @@ static void
pcibios_link_hba_resources( struct resource *hba_res, struct resource *r)
{
if (!r->parent) {
printk(KERN_EMERG "PCI: resource not parented! [%lx-%lx]\n",
r->start, r->end);
printk(KERN_EMERG "PCI: resource not parented! [%p-%p]\n",
(void*) r->start, (void*) r->end);
r->parent = hba_res;
/* reverse link is harder *sigh* */

26
arch/parisc/kernel/perf_asm.S
View File

@@ -20,6 +20,7 @@
*/
#include <asm/assembly.h>
#include <linux/linkage.h>
#ifdef CONFIG_64BIT
.level 2.0w
@@ -41,10 +42,8 @@
; starting/stopping the coprocessor with the pmenb/pmdis.
;
.text
.align 32
.export perf_intrigue_enable_perf_counters,code
perf_intrigue_enable_perf_counters:
ENTRY(perf_intrigue_enable_perf_counters)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -69,9 +68,9 @@ perf_intrigue_enable_perf_counters:
nop
.exit
.procend
ENDPROC(perf_intrigue_enable_perf_counters)
.export perf_intrigue_disable_perf_counters,code
perf_intrigue_disable_perf_counters:
ENTRY(perf_intrigue_disable_perf_counters)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -86,6 +85,7 @@ perf_intrigue_disable_perf_counters:
mtctl %r26,ccr ; turn off performance coprocessor
.exit
.procend
ENDPROC(perf_intrigue_disable_perf_counters)
;***********************************************************************
;*
@@ -117,8 +117,7 @@ perf_intrigue_disable_perf_counters:
;*
;***********************************************************************
.export perf_rdr_shift_in_W,code
perf_rdr_shift_in_W:
ENTRY(perf_rdr_shift_in_W)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -550,6 +549,7 @@ perf_rdr_shift_in_W_leave:
.exit
MTDIAG_2 (24) ; restore DR2
.procend
ENDPROC(perf_rdr_shift_in_W)
;***********************************************************************
@@ -575,8 +575,7 @@ perf_rdr_shift_in_W_leave:
;*
;***********************************************************************
.export perf_rdr_shift_out_W,code
perf_rdr_shift_out_W:
ENTRY(perf_rdr_shift_out_W)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -983,6 +982,7 @@ perf_rdr_shift_out_W_leave:
.exit
MTDIAG_2 (23) ; restore DR2
.procend
ENDPROC(perf_rdr_shift_out_W)
;***********************************************************************
@@ -1012,8 +1012,7 @@ perf_rdr_shift_out_W_leave:
;*
;***********************************************************************
.export perf_rdr_shift_in_U,code
perf_rdr_shift_in_U:
ENTRY(perf_rdr_shift_in_U)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -1343,6 +1342,7 @@ perf_rdr_shift_in_U_leave:
.exit
MTDIAG_2 (24) ; restore DR2
.procend
ENDPROC(perf_rdr_shift_in_U)
;***********************************************************************
;*
@@ -1369,8 +1369,7 @@ perf_rdr_shift_in_U_leave:
;*
;***********************************************************************
.export perf_rdr_shift_out_U,code
perf_rdr_shift_out_U:
ENTRY(perf_rdr_shift_out_U)
.proc
.callinfo frame=0,NO_CALLS
.entry
@@ -1687,4 +1686,5 @@ perf_rdr_shift_out_U_leave:
.exit
MTDIAG_2 (23) ; restore DR2
.procend
ENDPROC(perf_rdr_shift_out_U)

8
arch/parisc/kernel/process.c
View File

@@ -13,7 +13,7 @@
* Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
* Copyright (C) 2001 Alan Modra <amodra at parisc-linux.org>
* Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
* Copyright (C) 2001-2002 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2001-2007 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
*
*
@@ -303,7 +303,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
* Copy function and argument to be called from
* ret_from_kernel_thread.
*/
#ifdef __LP64__
#ifdef CONFIG_64BIT
cregs->gr[27] = pregs->gr[27];
#endif
cregs->gr[26] = pregs->gr[26];
@@ -355,8 +355,8 @@ asmlinkage int sys_execve(struct pt_regs *regs)
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
error = do_execve(filename, (char __user **) regs->gr[25],
(char __user **) regs->gr[24], regs);
error = do_execve(filename, (char __user * __user *) regs->gr[25],
(char __user * __user *) regs->gr[24], regs);
if (error == 0) {
task_lock(current);
current->ptrace &= ~PT_DTRACE;

11
arch/parisc/kernel/processor.c
View File

@@ -93,7 +93,7 @@ static int __init processor_probe(struct parisc_device *dev)
cpuid = boot_cpu_data.cpu_count;
txn_addr = dev->hpa.start; /* for legacy PDC */
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (is_pdc_pat()) {
ulong status;
unsigned long bytecnt;
@@ -153,8 +153,6 @@ static int __init processor_probe(struct parisc_device *dev)
p->cpuid = cpuid; /* save CPU id */
p->txn_addr = txn_addr; /* save CPU IRQ address */
#ifdef CONFIG_SMP
spin_lock_init(&p->lock);
/*
** FIXME: review if any other initialization is clobbered
** for boot_cpu by the above memset().
@@ -311,11 +309,11 @@ int __init init_per_cpu(int cpunum)
} else {
printk(KERN_WARNING "WARNING: No FP CoProcessor?!"
" (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n"
#ifdef __LP64__
#ifdef CONFIG_64BIT
"Halting Machine - FP required\n"
#endif
, coproc_cfg.ccr_functional);
#ifdef __LP64__
#ifdef CONFIG_64BIT
mdelay(100); /* previous chars get pushed to console */
panic("FP CoProc not reported");
#endif
@@ -339,9 +337,6 @@ show_cpuinfo (struct seq_file *m, void *v)
#ifdef CONFIG_SMP
if (0 == cpu_data[n].hpa)
continue;
#ifdef ENTRY_SYS_CPUS
#error iCOD support wants to show CPU state here
#endif
#endif
seq_printf(m, "processor\t: %d\n"
"cpu family\t: PA-RISC %s\n",

10
arch/parisc/kernel/ptrace.c
View File

@@ -36,7 +36,7 @@
#define DBG(x...)
#endif
#ifdef __LP64__
#ifdef CONFIG_64BIT
/* This function is needed to translate 32 bit pt_regs offsets in to
* 64 bit pt_regs offsets. For example, a 32 bit gdb under a 64 bit kernel
@@ -90,7 +90,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_PEEKDATA: {
int copied;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
unsigned int tmp;
@@ -122,7 +122,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
ret = 0;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
unsigned int tmp = (unsigned int)data;
DBG("sys_ptrace(POKE%s, %d, %lx, %lx)\n",
@@ -145,7 +145,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
processes, the kernel saves all regs on a syscall. */
case PTRACE_PEEKUSR: {
ret = -EIO;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
unsigned int tmp;
@@ -204,7 +204,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
ret = 0;
goto out_tsk;
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
if (addr & (sizeof(int)-1))
goto out_tsk;

16
arch/parisc/kernel/real2.S
View File

@@ -11,6 +11,8 @@
#include <asm/psw.h>
#include <asm/assembly.h>
#include <linux/linkage.h>
.section .bss
.export real_stack
.export real32_stack
@@ -39,8 +41,6 @@ save_cr_end:
.text
.export real32_call_asm
/* unsigned long real32_call_asm(unsigned int *sp,
* unsigned int *arg0p,
* unsigned int iodc_fn)
@@ -49,7 +49,7 @@ save_cr_end:
* iodc_fn is the IODC function to call
*/
real32_call_asm:
ENTRY(real32_call_asm)
STREG %rp, -RP_OFFSET(%sp) /* save RP */
#ifdef CONFIG_64BIT
callee_save
@@ -107,6 +107,7 @@ ric_ret:
LDREG -RP_OFFSET(%sp), %rp /* restore RP */
bv 0(%rp)
nop
ENDPROC(real32_call_asm)
# define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where)
@@ -218,7 +219,6 @@ rfi_r2v_1:
/************************ 64-bit real-mode calls ***********************/
/* This is only usable in wide kernels right now and will probably stay so */
.text
.export real64_call_asm
/* unsigned long real64_call_asm(unsigned long *sp,
* unsigned long *arg0p,
* unsigned long fn)
@@ -226,7 +226,7 @@ rfi_r2v_1:
* arg0p points to where saved arg values may be found
* iodc_fn is the IODC function to call
*/
real64_call_asm:
ENTRY(real64_call_asm)
std %rp, -0x10(%sp) /* save RP */
std %sp, -8(%arg0) /* save SP on real-mode stack */
copy %arg0, %sp /* adopt the real-mode SP */
@@ -272,19 +272,21 @@ r64_ret:
ldd -0x10(%sp), %rp /* restore RP */
bv 0(%rp)
nop
ENDPROC(real64_call_asm)
#endif
.export __canonicalize_funcptr_for_compare
.text
/* http://lists.parisc-linux.org/hypermail/parisc-linux/10916.html
** GCC 3.3 and later has a new function in libgcc.a for
** comparing function pointers.
*/
__canonicalize_funcptr_for_compare:
ENTRY(__canonicalize_funcptr_for_compare)
#ifdef CONFIG_64BIT
bve (%r2)
#else
bv %r0(%r2)
#endif
copy %r26,%r28
ENDPROC(__canonicalize_funcptr_for_compare)

6
arch/parisc/kernel/setup.c
View File

@@ -120,13 +120,13 @@ extern void collect_boot_cpu_data(void);
void __init setup_arch(char **cmdline_p)
{
#ifdef __LP64__
#ifdef CONFIG_64BIT
extern int parisc_narrow_firmware;
#endif
init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
#ifdef __LP64__
#ifdef CONFIG_64BIT
printk(KERN_INFO "The 64-bit Kernel has started...\n");
#else
printk(KERN_INFO "The 32-bit Kernel has started...\n");
@@ -134,7 +134,7 @@ void __init setup_arch(char **cmdline_p)
pdc_console_init();
#ifdef __LP64__
#ifdef CONFIG_64BIT
if(parisc_narrow_firmware) {
printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
}

271
arch/parisc/kernel/signal.c
View File

@@ -59,58 +59,13 @@
* this. */
#define A(__x) ((unsigned long)(__x))
int do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall);
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
#ifdef __LP64__
#ifdef CONFIG_64BIT
#include "sys32.h"
#endif
asmlinkage int
sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
{
sigset_t saveset, newset;
#ifdef __LP64__
compat_sigset_t newset32;
if (is_compat_task()) {
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (copy_from_user(&newset32, (compat_sigset_t __user *)unewset, sizeof(newset32)))
return -EFAULT;
sigset_32to64(&newset,&newset32);
} else
#endif
{
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset_t))
return -EINVAL;
if (copy_from_user(&newset, unewset, sizeof(newset)))
return -EFAULT;
}
sigdelsetmask(&newset, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
current->blocked = newset;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
regs->gr[28] = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(&saveset, regs, 1))
return -EINTR;
}
}
/*
* Do a signal return - restore sigcontext.
*/
@@ -148,7 +103,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
sigset_t set;
unsigned long usp = (regs->gr[30] & ~(0x01UL));
unsigned long sigframe_size = PARISC_RT_SIGFRAME_SIZE;
#ifdef __LP64__
#ifdef CONFIG_64BIT
compat_sigset_t compat_set;
struct compat_rt_sigframe __user * compat_frame;
@@ -162,7 +117,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
(usp - sigframe_size);
DBG(2,"sys_rt_sigreturn: frame is %p\n", frame);
#ifdef __LP64__
#ifdef CONFIG_64BIT
compat_frame = (struct compat_rt_sigframe __user *)frame;
if (is_compat_task()) {
@@ -184,7 +139,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
spin_unlock_irq(&current->sighand->siglock);
/* Good thing we saved the old gr[30], eh? */
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (is_compat_task()) {
DBG(1,"sys_rt_sigreturn: compat_frame->uc.uc_mcontext 0x%p\n",
&compat_frame->uc.uc_mcontext);
@@ -296,7 +251,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
unsigned long rp, usp;
unsigned long haddr, sigframe_size;
int err = 0;
#ifdef __LP64__
#ifdef CONFIG_64BIT
compat_int_t compat_val;
struct compat_rt_sigframe __user * compat_frame;
compat_sigset_t compat_set;
@@ -310,7 +265,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
DBG(1,"setup_rt_frame: frame %p info %p\n", frame, info);
#ifdef __LP64__
#ifdef CONFIG_64BIT
compat_frame = (struct compat_rt_sigframe __user *)frame;
@@ -390,7 +345,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
haddr = A(ka->sa.sa_handler);
/* The sa_handler may be a pointer to a function descriptor */
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (is_compat_task()) {
#endif
if (haddr & PA_PLABEL_FDESC) {
@@ -405,7 +360,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
haddr = fdesc.addr;
regs->gr[19] = fdesc.gp;
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
} else {
Elf64_Fdesc fdesc;
Elf64_Fdesc __user *ufdesc = (Elf64_Fdesc __user *)A(haddr & ~3);
@@ -425,19 +380,19 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* The syscall return path will create IAOQ values from r31.
*/
sigframe_size = PARISC_RT_SIGFRAME_SIZE;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (is_compat_task())
sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
#endif
if (in_syscall) {
regs->gr[31] = haddr;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (!test_thread_flag(TIF_32BIT))
sigframe_size |= 1;
#endif
} else {
unsigned long psw = USER_PSW;
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (!test_thread_flag(TIF_32BIT))
psw |= PSW_W;
#endif
@@ -462,7 +417,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->gr[2] = rp; /* userland return pointer */
regs->gr[26] = sig; /* signal number */
#ifdef __LP64__
#ifdef CONFIG_64BIT
if (is_compat_task()) {
regs->gr[25] = A(&compat_frame->info); /* siginfo pointer */
regs->gr[24] = A(&compat_frame->uc); /* ucontext pointer */
@@ -516,6 +471,97 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
return 1;
}
static inline void
syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
{
/* Check the return code */
switch (regs->gr[28]) {
case -ERESTART_RESTARTBLOCK:
current_thread_info()->restart_block.fn =
do_no_restart_syscall;
case -ERESTARTNOHAND:
DBG(1,"ERESTARTNOHAND: returning -EINTR\n");
regs->gr[28] = -EINTR;
break;
case -ERESTARTSYS:
if (!(ka->sa.sa_flags & SA_RESTART)) {
DBG(1,"ERESTARTSYS: putting -EINTR\n");
regs->gr[28] = -EINTR;
break;
}
/* fallthrough */
case -ERESTARTNOINTR:
/* A syscall is just a branch, so all
* we have to do is fiddle the return pointer.
*/
regs->gr[31] -= 8; /* delayed branching */
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
break;
}
}
static inline void
insert_restart_trampoline(struct pt_regs *regs)
{
switch(regs->gr[28]) {
case -ERESTART_RESTARTBLOCK: {
/* Restart the system call - no handlers present */
unsigned int *usp = (unsigned int *)regs->gr[30];
/* Setup a trampoline to restart the syscall
* with __NR_restart_syscall
*
* 0: <return address (orig r31)>
* 4: <2nd half for 64-bit>
* 8: ldw 0(%sp), %r31
* 12: be 0x100(%sr2, %r0)
* 16: ldi __NR_restart_syscall, %r20
*/
#ifdef CONFIG_64BIT
put_user(regs->gr[31] >> 32, &usp[0]);
put_user(regs->gr[31] & 0xffffffff, &usp[1]);
put_user(0x0fc010df, &usp[2]);
#else
put_user(regs->gr[31], &usp[0]);
put_user(0x0fc0109f, &usp[2]);
#endif
put_user(0xe0008200, &usp[3]);
put_user(0x34140000, &usp[4]);
/* Stack is 64-byte aligned, and we only need
* to flush 1 cache line.
* Flushing one cacheline is cheap.
* "sync" on bigger (> 4 way) boxes is not.
*/
flush_icache_range(regs->gr[30], regs->gr[30] + 4);
regs->gr[31] = regs->gr[30] + 8;
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
return;
}
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR: {
/* Hooray for delayed branching. We don't
* have to restore %r20 (the system call
* number) because it gets loaded in the delay
* slot of the branch external instruction.
*/
regs->gr[31] -= 8;
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
return;
}
default:
break;
}
}
/*
* Note that 'init' is a special process: it doesn't get signals it doesn't
* want to handle. Thus you cannot kill init even with a SIGKILL even by
@@ -527,13 +573,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
* registers). As noted below, the syscall number gets restored for
* us due to the magic of delayed branching.
*/
asmlinkage int
do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
asmlinkage void
do_signal(struct pt_regs *regs, long in_syscall)
{
siginfo_t info;
struct k_sigaction ka;
int signr;
sigset_t *oldset;
DBG(1,"\ndo_signal: oldset=0x%p, regs=0x%p, sr7 %#lx, in_syscall=%d\n",
oldset, regs, regs->sr[7], in_syscall);
@@ -543,7 +589,9 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
we would be called in that case, but for some reason we
are. */
if (!oldset)
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
DBG(1,"do_signal: oldset %08lx / %08lx\n",
@@ -560,98 +608,41 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
break;
/* Restart a system call if necessary. */
if (in_syscall) {
/* Check the return code */
switch (regs->gr[28]) {
case -ERESTART_RESTARTBLOCK:
current_thread_info()->restart_block.fn = do_no_restart_syscall;
case -ERESTARTNOHAND:
DBG(1,"ERESTARTNOHAND: returning -EINTR\n");
regs->gr[28] = -EINTR;
break;
if (in_syscall)
syscall_restart(regs, &ka);
case -ERESTARTSYS:
if (!(ka.sa.sa_flags & SA_RESTART)) {
DBG(1,"ERESTARTSYS: putting -EINTR\n");
regs->gr[28] = -EINTR;
break;
}
/* fallthrough */
case -ERESTARTNOINTR:
/* A syscall is just a branch, so all
we have to do is fiddle the return pointer. */
regs->gr[31] -= 8; /* delayed branching */
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
break;
}
}
/* Whee! Actually deliver the signal. If the
delivery failed, we need to continue to iterate in
this loop so we can deliver the SIGSEGV... */
if (handle_signal(signr, &info, &ka, oldset, regs, in_syscall)) {
if (handle_signal(signr, &info, &ka, oldset,
regs, in_syscall)) {
DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n",
regs->gr[28]);
return 1;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}
}
/* end of while(1) looping forever if we can't force a signal */
/* Did we come from a system call? */
if (in_syscall) {
/* Restart the system call - no handlers present */
if (regs->gr[28] == -ERESTART_RESTARTBLOCK) {
unsigned int *usp = (unsigned int *)regs->gr[30];
/* Setup a trampoline to restart the syscall
* with __NR_restart_syscall
*
* 0: <return address (orig r31)>
* 4: <2nd half for 64-bit>
* 8: ldw 0(%sp), %r31
* 12: be 0x100(%sr2, %r0)
* 16: ldi __NR_restart_syscall, %r20
*/
#ifndef __LP64__
put_user(regs->gr[31], &usp[0]);
put_user(0x0fc0109f, &usp[2]);
#else
put_user(regs->gr[31] >> 32, &usp[0]);
put_user(regs->gr[31] & 0xffffffff, &usp[1]);
put_user(0x0fc010df, &usp[2]);
#endif
put_user(0xe0008200, &usp[3]);
put_user(0x34140000, &usp[4]);
/* Stack is 64-byte aligned, and we only need
* to flush 1 cache line.
* Flushing one cacheline is cheap.
* "sync" on bigger (> 4 way) boxes is not.
*/
asm("fdc %%r0(%%sr3, %0)\n"
"sync\n"
"fic %%r0(%%sr3, %0)\n"
"sync\n"
: : "r"(regs->gr[30]));
regs->gr[31] = regs->gr[30] + 8;
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
} else if (regs->gr[28] == -ERESTARTNOHAND ||
regs->gr[28] == -ERESTARTSYS ||
regs->gr[28] == -ERESTARTNOINTR) {
/* Hooray for delayed branching. We don't
have to restore %r20 (the system call
number) because it gets loaded in the delay
slot of the branch external instruction. */
regs->gr[31] -= 8;
/* Preserve original r28. */
regs->gr[28] = regs->orig_r28;
}
}
if (in_syscall)
insert_restart_trampoline(regs);
DBG(1,"do_signal: Exit (not delivered), regs->gr[28] = %ld\n",
regs->gr[28]);
return 0;
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
return;
}
void do_notify_resume(struct pt_regs *regs, long in_syscall)
{
if (test_thread_flag(TIF_SIGPENDING) ||
test_thread_flag(TIF_RESTORE_SIGMASK))
do_signal(regs, in_syscall);
}

42
arch/parisc/kernel/signal32.c
View File

@@ -1,6 +1,8 @@
/* Signal support for 32-bit kernel builds
*
* Copyright (C) 2001 Matthew Wilcox <willy at parisc-linux.org>
* Copyright (C) 2006 Kyle McMartin <kyle at parisc-linux.org>
*
* Code was mostly borrowed from kernel/signal.c.
* See kernel/signal.c for additional Copyrights.
*
@@ -401,7 +403,7 @@ setup_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __
int
copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
{
unsigned long tmp;
compat_uptr_t addr;
int err;
if (!access_ok(VERIFY_READ, from, sizeof(compat_siginfo_t)))
@@ -424,8 +426,8 @@ copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
err |= __get_user(to->si_uid, &from->si_uid);
break;
case __SI_FAULT >> 16:
err |= __get_user(tmp, &from->si_addr);
to->si_addr = (void __user *) tmp;
err |= __get_user(addr, &from->si_addr);
to->si_addr = compat_ptr(addr);
break;
case __SI_POLL >> 16:
err |= __get_user(to->si_band, &from->si_band);
@@ -445,7 +447,8 @@ copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
int
copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
{
unsigned int addr;
compat_uptr_t addr;
compat_int_t val;
int err;
if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
@@ -474,8 +477,8 @@ copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
err |= __put_user(from->si_uid, &to->si_uid);
break;
case __SI_FAULT >> 16:
/* avoid type-checking warnings by copying _pad[0] in lieu of si_addr... */
err |= __put_user(from->_sifields._pad[0], &to->si_addr);
addr = ptr_to_compat(from->si_addr);
err |= __put_user(addr, &to->si_addr);
break;
case __SI_POLL >> 16:
err |= __put_user(from->si_band, &to->si_band);
@@ -484,17 +487,36 @@ copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
case __SI_TIMER >> 16:
err |= __put_user(from->si_tid, &to->si_tid);
err |= __put_user(from->si_overrun, &to->si_overrun);
addr = (unsigned long) from->si_ptr;
err |= __put_user(addr, &to->si_ptr);
val = (compat_int_t)from->si_int;
err |= __put_user(val, &to->si_int);
break;
case __SI_RT >> 16: /* Not generated by the kernel as of now. */
case __SI_MESGQ >> 16:
err |= __put_user(from->si_uid, &to->si_uid);
err |= __put_user(from->si_pid, &to->si_pid);
addr = (unsigned long) from->si_ptr;
err |= __put_user(addr, &to->si_ptr);
val = (compat_int_t)from->si_int;
err |= __put_user(val, &to->si_int);
break;
}
}
return err;
}
asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
struct compat_siginfo __user *uinfo)
{
siginfo_t info;
if (copy_siginfo_from_user32(&info, uinfo))
return -EFAULT;
/* Not even root can pretend to send signals from the kernel.
Nor can they impersonate a kill(), which adds source info. */
if (info.si_code >= 0)
return -EPERM;
info.si_signo = sig;
/* POSIX.1b doesn't mention process groups. */
return kill_proc_info(sig, &info, pid);
}

178
arch/parisc/kernel/smp.c
View File

@@ -16,9 +16,6 @@
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
*/
#undef ENTRY_SYS_CPUS /* syscall support for iCOD-like functionality */
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
@@ -51,7 +48,15 @@
#include <asm/unistd.h>
#include <asm/cacheflush.h>
#define kDEBUG 0
#undef DEBUG_SMP
#ifdef DEBUG_SMP
static int smp_debug_lvl = 0;
#define smp_debug(lvl, printargs...) \
if (lvl >= smp_debug_lvl) \
printk(printargs);
#else
#define smp_debug(lvl, ...)
#endif /* DEBUG_SMP */
DEFINE_SPINLOCK(smp_lock);
@@ -76,6 +81,7 @@ cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL; /* Bitmap of Present CP
EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(cpu_possible_map);
DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
struct smp_call_struct {
void (*func) (void *info);
@@ -107,13 +113,6 @@ enum ipi_message_type {
static void
ipi_init(int cpuid)
{
/* If CPU is present ... */
#ifdef ENTRY_SYS_CPUS
/* *and* running (not stopped) ... */
#error iCOD support wants state checked here.
#endif
#error verify IRQ_OFFSET(IPI_IRQ) is ipi_interrupt() in new IRQ region
if(cpu_online(cpuid) )
@@ -133,23 +132,12 @@ ipi_init(int cpuid)
static void
halt_processor(void)
{
#ifdef ENTRY_SYS_CPUS
#error halt_processor() needs rework
/*
** o migrate I/O interrupts off this CPU.
** o leave IPI enabled - __cli() will disable IPI.
** o leave CPU in online map - just change the state
*/
cpu_data[this_cpu].state = STATE_STOPPED;
mark_bh(IPI_BH);
#else
/* REVISIT : redirect I/O Interrupts to another CPU? */
/* REVISIT : does PM *know* this CPU isn't available? */
cpu_clear(smp_processor_id(), cpu_online_map);
local_irq_disable();
for (;;)
;
#endif
}
@@ -167,10 +155,11 @@ ipi_interrupt(int irq, void *dev_id)
mb(); /* Order interrupt and bit testing. */
for (;;) {
spin_lock_irqsave(&(p->lock),flags);
spinlock_t *lock = &per_cpu(ipi_lock, this_cpu);
spin_lock_irqsave(lock, flags);
ops = p->pending_ipi;
p->pending_ipi = 0;
spin_unlock_irqrestore(&(p->lock),flags);
spin_unlock_irqrestore(lock, flags);
mb(); /* Order bit clearing and data access. */
@@ -184,15 +173,11 @@ ipi_interrupt(int irq, void *dev_id)
switch (which) {
case IPI_NOP:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d IPI_NOP\n",this_cpu);
#endif /* kDEBUG */
smp_debug(100, KERN_DEBUG "CPU%d IPI_NOP\n", this_cpu);
break;
case IPI_RESCHEDULE:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d IPI_RESCHEDULE\n",this_cpu);
#endif /* kDEBUG */
smp_debug(100, KERN_DEBUG "CPU%d IPI_RESCHEDULE\n", this_cpu);
/*
* Reschedule callback. Everything to be
* done is done by the interrupt return path.
@@ -200,9 +185,7 @@ ipi_interrupt(int irq, void *dev_id)
break;
case IPI_CALL_FUNC:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d IPI_CALL_FUNC\n",this_cpu);
#endif /* kDEBUG */
smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC\n", this_cpu);
{
volatile struct smp_call_struct *data;
void (*func)(void *info);
@@ -233,28 +216,16 @@ ipi_interrupt(int irq, void *dev_id)
break;
case IPI_CPU_START:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d IPI_CPU_START\n",this_cpu);
#endif /* kDEBUG */
#ifdef ENTRY_SYS_CPUS
p->state = STATE_RUNNING;
#endif
smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_START\n", this_cpu);
break;
case IPI_CPU_STOP:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d IPI_CPU_STOP\n",this_cpu);
#endif /* kDEBUG */
#ifdef ENTRY_SYS_CPUS
#else
smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_STOP\n", this_cpu);
halt_processor();
#endif
break;
case IPI_CPU_TEST:
#if (kDEBUG>=100)
printk(KERN_DEBUG "CPU%d is alive!\n",this_cpu);
#endif /* kDEBUG */
smp_debug(100, KERN_DEBUG "CPU%d is alive!\n", this_cpu);
break;
default:
@@ -275,12 +246,13 @@ static inline void
ipi_send(int cpu, enum ipi_message_type op)
{
struct cpuinfo_parisc *p = &cpu_data[cpu];
spinlock_t *lock = &per_cpu(ipi_lock, cpu);
unsigned long flags;
spin_lock_irqsave(&(p->lock),flags);
spin_lock_irqsave(lock, flags);
p->pending_ipi |= 1 << op;
gsc_writel(IPI_IRQ - CPU_IRQ_BASE, cpu_data[cpu].hpa);
spin_unlock_irqrestore(&(p->lock),flags);
spin_unlock_irqrestore(lock, flags);
}
@@ -560,13 +532,8 @@ int __init smp_boot_one_cpu(int cpuid)
alive:
/* Remember the Slave data */
#if (kDEBUG>=100)
printk(KERN_DEBUG "SMP: CPU:%d came alive after %ld _us\n",
smp_debug(100, KERN_DEBUG "SMP: CPU:%d came alive after %ld _us\n",
cpuid, timeout * 100);
#endif /* kDEBUG */
#ifdef ENTRY_SYS_CPUS
cpu_data[cpuid].state = STATE_RUNNING;
#endif
return 0;
}
@@ -574,10 +541,6 @@ void __devinit smp_prepare_boot_cpu(void)
{
int bootstrap_processor=cpu_data[0].cpuid; /* CPU ID of BSP */
#ifdef ENTRY_SYS_CPUS
cpu_data[0].state = STATE_RUNNING;
#endif
/* Setup BSP mappings */
printk("SMP: bootstrap CPU ID is %d\n",bootstrap_processor);
@@ -616,101 +579,6 @@ int __cpuinit __cpu_up(unsigned int cpu)
return cpu_online(cpu) ? 0 : -ENOSYS;
}
#ifdef ENTRY_SYS_CPUS
/* Code goes along with:
** entry.s: ENTRY_NAME(sys_cpus) / * 215, for cpu stat * /
*/
int sys_cpus(int argc, char **argv)
{
int i,j=0;
extern int current_pid(int cpu);
if( argc > 2 ) {
printk("sys_cpus:Only one argument supported\n");
return (-1);
}
if ( argc == 1 ){
#ifdef DUMP_MORE_STATE
for_each_online_cpu(i) {
int cpus_per_line = 4;
if (j++ % cpus_per_line)
printk(" %3d",i);
else
printk("\n %3d",i);
}
printk("\n");
#else
printk("\n 0\n");
#endif
} else if((argc==2) && !(strcmp(argv[1],"-l"))) {
printk("\nCPUSTATE TASK CPUNUM CPUID HARDCPU(HPA)\n");
#ifdef DUMP_MORE_STATE
for_each_online_cpu(i) {
if (cpu_data[i].cpuid != NO_PROC_ID) {
switch(cpu_data[i].state) {
case STATE_RENDEZVOUS:
printk("RENDEZVS ");
break;
case STATE_RUNNING:
printk((current_pid(i)!=0) ? "RUNNING " : "IDLING ");
break;
case STATE_STOPPED:
printk("STOPPED ");
break;
case STATE_HALTED:
printk("HALTED ");
break;
default:
printk("%08x?", cpu_data[i].state);
break;
}
if(cpu_online(i)) {
printk(" %4d",current_pid(i));
}
printk(" %6d",cpu_number_map(i));
printk(" %5d",i);
printk(" 0x%lx\n",cpu_data[i].hpa);
}
}
#else
printk("\n%s %4d 0 0 --------",
(current->pid)?"RUNNING ": "IDLING ",current->pid);
#endif
} else if ((argc==2) && !(strcmp(argv[1],"-s"))) {
#ifdef DUMP_MORE_STATE
printk("\nCPUSTATE CPUID\n");
for_each_online_cpu(i) {
if (cpu_data[i].cpuid != NO_PROC_ID) {
switch(cpu_data[i].state) {
case STATE_RENDEZVOUS:
printk("RENDEZVS");break;
case STATE_RUNNING:
printk((current_pid(i)!=0) ? "RUNNING " : "IDLING");
break;
case STATE_STOPPED:
printk("STOPPED ");break;
case STATE_HALTED:
printk("HALTED ");break;
default:
}
printk(" %5d\n",i);
}
}
#else
printk("\n%s CPU0",(current->pid==0)?"RUNNING ":"IDLING ");
#endif
} else {
printk("sys_cpus:Unknown request\n");
return (-1);
}
return 0;
}
#endif /* ENTRY_SYS_CPUS */
#ifdef CONFIG_PROC_FS
int __init
setup_profiling_timer(unsigned int multiplier)

71
arch/parisc/kernel/syscall.S
View File

@@ -12,27 +12,23 @@
#include <asm/errno.h>
#include <asm/psw.h>
#include <asm/thread_info.h>
#include <asm/assembly.h>
#include <asm/processor.h>
#include <linux/linkage.h>
/* We fill the empty parts of the gateway page with
* something that will kill the kernel or a
* userspace application.
*/
#define KILL_INSN break 0,0
#ifdef CONFIG_64BIT
.level 2.0w
#else
.level 1.1
#endif
.level LEVEL
.text
.import syscall_exit,code
.import syscall_exit_rfi,code
.export linux_gateway_page
/* Linux gateway page is aliased to virtual page 0 in the kernel
* address space. Since it is a gateway page it cannot be
@@ -43,7 +39,7 @@
*/
.align ASM_PAGE_SIZE
linux_gateway_page:
ENTRY(linux_gateway_page)
/* ADDRESS 0x00 to 0xb0 = 176 bytes / 4 bytes per insn = 44 insns */
.rept 44
@@ -595,73 +591,43 @@ cas_action:
the other for the store. Either return -EFAULT.
Each of the entries must be relocated. */
.section __ex_table,"aw"
#ifdef CONFIG_64BIT
/* Pad the address calculation */
.word 0,(2b - linux_gateway_page)
.word 0,(3b - linux_gateway_page)
#else
.word (2b - linux_gateway_page)
.word (3b - linux_gateway_page)
#endif
ASM_ULONG_INSN (1b - linux_gateway_page), (3b - linux_gateway_page)
ASM_ULONG_INSN (2b - linux_gateway_page), (3b - linux_gateway_page)
.previous
.section __ex_table,"aw"
#ifdef CONFIG_64BIT
/* Pad the address calculation */
.word 0,(1b - linux_gateway_page)
.word 0,(3b - linux_gateway_page)
#else
.word (1b - linux_gateway_page)
.word (3b - linux_gateway_page)
#endif
.previous
end_compare_and_swap:
/* Make sure nothing else is placed on this page */
.align ASM_PAGE_SIZE
.export end_linux_gateway_page
end_linux_gateway_page:
END(linux_gateway_page)
ENTRY(end_linux_gateway_page)
/* Relocate symbols assuming linux_gateway_page is mapped
to virtual address 0x0 */
#ifdef CONFIG_64BIT
/* FIXME: The code will always be on the gateay page
and thus it will be on the first 4k, the
assembler seems to think that the final
subtraction result is only a word in
length, so we pad the value.
*/
#define LWS_ENTRY(_name_) .word 0,(lws_##_name_ - linux_gateway_page)
#else
#define LWS_ENTRY(_name_) .word (lws_##_name_ - linux_gateway_page)
#endif
#define LWS_ENTRY(_name_) ASM_ULONG_INSN (lws_##_name_ - linux_gateway_page)
.section .rodata,"a"
.align ASM_PAGE_SIZE
/* Light-weight-syscall table */
/* Start of lws table. */
.export lws_table
.Llws_table:
lws_table:
ENTRY(lws_table)
LWS_ENTRY(compare_and_swap32) /* 0 - ELF32 Atomic compare and swap */
LWS_ENTRY(compare_and_swap64) /* 1 - ELF64 Atomic compare and swap */
END(lws_table)
/* End of lws table */
.align ASM_PAGE_SIZE
.export sys_call_table
.Lsys_call_table:
sys_call_table:
ENTRY(sys_call_table)
#include "syscall_table.S"
END(sys_call_table)
#ifdef CONFIG_64BIT
.align ASM_PAGE_SIZE
.export sys_call_table64
.Lsys_call_table64:
sys_call_table64:
ENTRY(sys_call_table64)
#define SYSCALL_TABLE_64BIT
#include "syscall_table.S"
END(sys_call_table64)
#endif
#ifdef CONFIG_SMP
@@ -671,9 +637,7 @@ sys_call_table64:
*/
.section .data
.align 4096
.export lws_lock_start
.Llws_lock_start:
lws_lock_start:
ENTRY(lws_lock_start)
/* lws locks */
.align 16
.rept 16
@@ -683,6 +647,7 @@ lws_lock_start:
.word 0
.word 0
.endr
END(lws_lock_start)
.previous
#endif
/* CONFIG_SMP for lws_lock_start */

16
arch/parisc/kernel/syscall_table.S
View File

@@ -10,7 +10,7 @@
* Copyright (C) 2000 Grant Grundler <grundler at parisc-linux.org>
* Copyright (C) 2001 Richard Hirst <rhirst with parisc-linux.org>
* Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
* Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2001-2007 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2000-2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
* Copyright (C) 2005-2006 Kyle McMartin <kyle at parisc-linux.org>
@@ -282,8 +282,8 @@
* to worry about faulting trying to copy in a larger 64-bit
* struct from a 32-bit user-space app.
*/
ENTRY_SAME(rt_sigqueueinfo)
ENTRY_SAME(rt_sigsuspend_wrapper) /* not really SAME -- see the code */
ENTRY_COMP(rt_sigqueueinfo)
ENTRY_COMP(rt_sigsuspend)
ENTRY_SAME(chown) /* 180 */
/* setsockopt() used by iptables: SO_SET_REPLACE/SO_SET_ADD_COUNTERS */
ENTRY_COMP(setsockopt)
@@ -377,9 +377,9 @@
ENTRY_SAME(inotify_init)
ENTRY_SAME(inotify_add_watch) /* 270 */
ENTRY_SAME(inotify_rm_watch)
ENTRY_SAME(ni_syscall) /* 271 ENTRY_COMP(pselect6) */
ENTRY_SAME(ni_syscall) /* 272 ENTRY_COMP(ppoll) */
ENTRY_SAME(migrate_pages)
ENTRY_COMP(pselect6)
ENTRY_COMP(ppoll)
ENTRY_COMP(openat) /* 275 */
ENTRY_SAME(mkdirat)
ENTRY_SAME(mknodat)
@@ -399,5 +399,11 @@
ENTRY_SAME(splice)
ENTRY_OURS(sync_file_range)
ENTRY_SAME(tee)
ENTRY_COMP(vmsplice)
ENTRY_COMP(move_pages) /* 295 */
ENTRY_SAME(getcpu)
ENTRY_SAME(epoll_pwait)
ENTRY_COMP(statfs64)
ENTRY_COMP(fstatfs64)
/* Nothing yet */

146
arch/parisc/kernel/time.c
View File

@@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/profile.h>
#include <linux/clocksource.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -98,7 +99,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
* cycles after the IT fires. But it's arbitrary how much time passes
* before we call it "late". I've picked one second.
*/
if (ticks_elapsed > HZ) {
if (unlikely(ticks_elapsed > HZ)) {
/* Scenario 3: very long delay? bad in any case */
printk (KERN_CRIT "timer_interrupt(CPU %d): delayed!"
" cycles %lX rem %lX "
@@ -147,10 +148,6 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
write_sequnlock(&xtime_lock);
}
/* check soft power switch status */
if (cpu == 0 && !atomic_read(&power_tasklet.count))
tasklet_schedule(&power_tasklet);
return IRQ_HANDLED;
}
@@ -172,121 +169,41 @@ unsigned long profile_pc(struct pt_regs *regs)
EXPORT_SYMBOL(profile_pc);
/*
* Return the number of micro-seconds that elapsed since the last
* update to wall time (aka xtime). The xtime_lock
* must be at least read-locked when calling this routine.
*/
static inline unsigned long gettimeoffset (void)
/* clock source code */
static cycle_t read_cr16(void)
{
#ifndef CONFIG_SMP
/*
* FIXME: This won't work on smp because jiffies are updated by cpu 0.
* Once parisc-linux learns the cr16 difference between processors,
* this could be made to work.
*/
unsigned long now;
unsigned long prev_tick;
unsigned long next_tick;
unsigned long elapsed_cycles;
unsigned long usec;
unsigned long cpuid = smp_processor_id();
unsigned long cpt = clocktick;
next_tick = cpu_data[cpuid].it_value;
now = mfctl(16); /* Read the hardware interval timer. */
prev_tick = next_tick - cpt;
/* Assume Scenario 1: "now" is later than prev_tick. */
elapsed_cycles = now - prev_tick;
/* aproximate HZ with shifts. Intended math is "(elapsed/clocktick) > HZ" */
#if HZ == 1000
if (elapsed_cycles > (cpt << 10) )
#elif HZ == 250
if (elapsed_cycles > (cpt << 8) )
#elif HZ == 100
if (elapsed_cycles > (cpt << 7) )
#else
#warn WTF is HZ set to anyway?
if (elapsed_cycles > (HZ * cpt) )
#endif
{
/* Scenario 3: clock ticks are missing. */
printk (KERN_CRIT "gettimeoffset(CPU %ld): missing %ld ticks!"
" cycles %lX prev/now/next %lX/%lX/%lX clock %lX\n",
cpuid, elapsed_cycles / cpt,
elapsed_cycles, prev_tick, now, next_tick, cpt);
}
/* FIXME: Can we improve the precision? Not with PAGE0. */
usec = (elapsed_cycles * 10000) / PAGE0->mem_10msec;
return usec;
#else
return 0;
#endif
return get_cycles();
}
void
do_gettimeofday (struct timeval *tv)
static int cr16_update_callback(void);
static struct clocksource clocksource_cr16 = {
.name = "cr16",
.rating = 300,
.read = read_cr16,
.mask = CLOCKSOURCE_MASK(BITS_PER_LONG),
.mult = 0, /* to be set */
.shift = 22,
.update_callback = cr16_update_callback,
.is_continuous = 1,
};
static int cr16_update_callback(void)
{
unsigned long flags, seq, usec, sec;
int change = 0;
/* Hold xtime_lock and adjust timeval. */
do {
seq = read_seqbegin_irqsave(&xtime_lock, flags);
usec = gettimeoffset();
sec = xtime.tv_sec;
usec += (xtime.tv_nsec / 1000);
} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
/* Move adjusted usec's into sec's. */
while (usec >= USEC_PER_SEC) {
usec -= USEC_PER_SEC;
++sec;
/* since the cr16 cycle counters are not syncronized across CPUs,
we'll check if we should switch to a safe clocksource: */
if (clocksource_cr16.rating != 0 && num_online_cpus() > 1) {
clocksource_cr16.rating = 0;
clocksource_reselect();
change = 1;
}
/* Return adjusted result. */
tv->tv_sec = sec;
tv->tv_usec = usec;
return change;
}
EXPORT_SYMBOL(do_gettimeofday);
int
do_settimeofday (struct timespec *tv)
{
time_t wtm_sec, sec = tv->tv_sec;
long wtm_nsec, nsec = tv->tv_nsec;
if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
return -EINVAL;
write_seqlock_irq(&xtime_lock);
{
/*
* This is revolting. We need to set "xtime"
* correctly. However, the value in this location is
* the value at the most recent update of wall time.
* Discover what correction gettimeofday would have
* done, and then undo it!
*/
nsec -= gettimeoffset() * 1000;
wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
set_normalized_timespec(&xtime, sec, nsec);
set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
ntp_clear();
}
write_sequnlock_irq(&xtime_lock);
clock_was_set();
return 0;
}
EXPORT_SYMBOL(do_settimeofday);
void __init start_cpu_itimer(void)
{
@@ -301,11 +218,18 @@ void __init start_cpu_itimer(void)
void __init time_init(void)
{
static struct pdc_tod tod_data;
unsigned long current_cr16_khz;
clocktick = (100 * PAGE0->mem_10msec) / HZ;
start_cpu_itimer(); /* get CPU 0 started */
/* register at clocksource framework */
current_cr16_khz = PAGE0->mem_10msec/10; /* kHz */
clocksource_cr16.mult = clocksource_khz2mult(current_cr16_khz,
clocksource_cr16.shift);
clocksource_register(&clocksource_cr16);
if (pdc_tod_read(&tod_data) == 0) {
unsigned long flags;

155
arch/parisc/kernel/traps.c
View File

@@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/console.h>
#include <linux/kallsyms.h>
#include <linux/bug.h>
#include <asm/assembly.h>
#include <asm/system.h>
@@ -39,6 +40,8 @@
#include <asm/pdc.h>
#include <asm/pdc_chassis.h>
#include <asm/unwind.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include "../math-emu/math-emu.h" /* for handle_fpe() */
@@ -49,7 +52,7 @@
DEFINE_SPINLOCK(pa_dbit_lock);
#endif
int printbinary(char *buf, unsigned long x, int nbits)
static int printbinary(char *buf, unsigned long x, int nbits)
{
unsigned long mask = 1UL << (nbits - 1);
while (mask != 0) {
@@ -61,7 +64,7 @@ int printbinary(char *buf, unsigned long x, int nbits)
return nbits;
}
#ifdef __LP64__
#ifdef CONFIG_64BIT
#define RFMT "%016lx"
#else
#define RFMT "%08lx"
@@ -160,13 +163,13 @@ static void do_show_stack(struct unwind_frame_info *info)
{
int i = 1;
printk("Backtrace:\n");
printk(KERN_CRIT "Backtrace:\n");
while (i <= 16) {
if (unwind_once(info) < 0 || info->ip == 0)
break;
if (__kernel_text_address(info->ip)) {
printk(" [<" RFMT ">] ", info->ip);
printk("%s [<" RFMT ">] ", (i&0x3)==1 ? KERN_CRIT : "", info->ip);
#ifdef CONFIG_KALLSYMS
print_symbol("%s\n", info->ip);
#else
@@ -185,18 +188,19 @@ void show_stack(struct task_struct *task, unsigned long *s)
if (!task) {
unsigned long sp;
struct pt_regs *r;
HERE:
asm volatile ("copy %%r30, %0" : "=r"(sp));
r = kzalloc(sizeof(struct pt_regs), GFP_KERNEL);
if (!r)
return;
r->iaoq[0] = (unsigned long)&&HERE;
r->gr[2] = (unsigned long)__builtin_return_address(0);
r->gr[30] = sp;
unwind_frame_init(&info, current, r);
kfree(r);
{
struct pt_regs r;
memset(&r, 0, sizeof(struct pt_regs));
r.iaoq[0] = (unsigned long)&&HERE;
r.gr[2] = (unsigned long)__builtin_return_address(0);
r.gr[30] = sp;
unwind_frame_init(&info, current, &r);
}
} else {
unwind_frame_init_from_blocked_task(&info, task);
}
@@ -204,6 +208,11 @@ HERE:
do_show_stack(&info);
}
int is_valid_bugaddr(unsigned long iaoq)
{
return 1;
}
void die_if_kernel(char *str, struct pt_regs *regs, long err)
{
if (user_mode(regs)) {
@@ -222,15 +231,15 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
oops_in_progress = 1;
/* Amuse the user in a SPARC fashion */
printk(
" _______________________________ \n"
" < Your System ate a SPARC! Gah! >\n"
" ------------------------------- \n"
" \\ ^__^\n"
" \\ (xx)\\_______\n"
" (__)\\ )\\/\\\n"
" U ||----w |\n"
" || ||\n");
if (err) printk(
KERN_CRIT " _______________________________ \n"
KERN_CRIT " < Your System ate a SPARC! Gah! >\n"
KERN_CRIT " ------------------------------- \n"
KERN_CRIT " \\ ^__^\n"
KERN_CRIT " \\ (xx)\\_______\n"
KERN_CRIT " (__)\\ )\\/\\\n"
KERN_CRIT " U ||----w |\n"
KERN_CRIT " || ||\n");
/* unlock the pdc lock if necessary */
pdc_emergency_unlock();
@@ -242,9 +251,20 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
if (!console_drivers)
pdc_console_restart();
printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
current->comm, current->pid, str, err);
if (err)
printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
current->comm, current->pid, str, err);
/* Wot's wrong wif bein' racy? */
if (current->thread.flags & PARISC_KERNEL_DEATH) {
printk(KERN_CRIT "%s() recursion detected.\n", __FUNCTION__);
local_irq_enable();
while (1);
}
current->thread.flags |= PARISC_KERNEL_DEATH;
show_regs(regs);
dump_stack();
if (in_interrupt())
panic("Fatal exception in interrupt");
@@ -255,14 +275,6 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
panic("Fatal exception");
}
/* Wot's wrong wif bein' racy? */
if (current->thread.flags & PARISC_KERNEL_DEATH) {
printk(KERN_CRIT "%s() recursion detected.\n", __FUNCTION__);
local_irq_enable();
while (1);
}
current->thread.flags |= PARISC_KERNEL_DEATH;
do_exit(SIGSEGV);
}
@@ -273,61 +285,45 @@ int syscall_ipi(int (*syscall) (struct pt_regs *), struct pt_regs *regs)
/* gdb uses break 4,8 */
#define GDB_BREAK_INSN 0x10004
void handle_gdb_break(struct pt_regs *regs, int wot)
static void handle_gdb_break(struct pt_regs *regs, int wot)
{
struct siginfo si;
si.si_code = wot;
si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
si.si_signo = SIGTRAP;
si.si_errno = 0;
si.si_code = wot;
si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
force_sig_info(SIGTRAP, &si, current);
}
void handle_break(unsigned iir, struct pt_regs *regs)
static void handle_break(struct pt_regs *regs)
{
struct siginfo si;
unsigned iir = regs->iir;
switch(iir) {
case 0x00:
#ifdef PRINT_USER_FAULTS
printk(KERN_DEBUG "break 0,0: pid=%d command='%s'\n",
current->pid, current->comm);
#endif
die_if_kernel("Breakpoint", regs, 0);
#ifdef PRINT_USER_FAULTS
show_regs(regs);
#endif
si.si_code = TRAP_BRKPT;
si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
si.si_signo = SIGTRAP;
force_sig_info(SIGTRAP, &si, current);
break;
case GDB_BREAK_INSN:
die_if_kernel("Breakpoint", regs, 0);
handle_gdb_break(regs, TRAP_BRKPT);
break;
default:
#ifdef PRINT_USER_FAULTS
printk(KERN_DEBUG "break %#08x: pid=%d command='%s'\n",
iir, current->pid, current->comm);
show_regs(regs);
#endif
si.si_signo = SIGTRAP;
si.si_code = TRAP_BRKPT;
si.si_addr = (void __user *) (regs->iaoq[0] & ~3);
force_sig_info(SIGTRAP, &si, current);
return;
if (unlikely(iir == PARISC_BUG_BREAK_INSN && !user_mode(regs))) {
/* check if a BUG() or WARN() trapped here. */
enum bug_trap_type tt;
tt = report_bug(regs->iaoq[0] & ~3);
if (tt == BUG_TRAP_TYPE_WARN) {
regs->iaoq[0] += 4;
regs->iaoq[1] += 4;
return; /* return to next instruction when WARN_ON(). */
}
die_if_kernel("Unknown kernel breakpoint", regs,
(tt == BUG_TRAP_TYPE_NONE) ? 9 : 0);
}
}
#ifdef PRINT_USER_FAULTS
if (unlikely(iir != GDB_BREAK_INSN)) {
printk(KERN_DEBUG "break %d,%d: pid=%d command='%s'\n",
iir & 31, (iir>>13) & ((1<<13)-1),
current->pid, current->comm);
show_regs(regs);
}
#endif
int handle_toc(void)
{
printk(KERN_CRIT "TOC call.\n");
return 0;
/* send standard GDB signal */
handle_gdb_break(regs, TRAP_BRKPT);
}
static void default_trap(int code, struct pt_regs *regs)
@@ -336,7 +332,7 @@ static void default_trap(int code, struct pt_regs *regs)
show_regs(regs);
}
void (*cpu_lpmc) (int code, struct pt_regs *regs) = default_trap;
void (*cpu_lpmc) (int code, struct pt_regs *regs) __read_mostly = default_trap;
void transfer_pim_to_trap_frame(struct pt_regs *regs)
@@ -554,7 +550,8 @@ void handle_interruption(int code, struct pt_regs *regs)
/* Low-priority machine check */
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_LPMC);
flush_all_caches();
flush_cache_all();
flush_tlb_all();
cpu_lpmc(5, regs);
return;
@@ -572,7 +569,7 @@ void handle_interruption(int code, struct pt_regs *regs)
case 9:
/* Break instruction trap */
handle_break(regs->iir,regs);
handle_break(regs);
return;
case 10:
@@ -840,7 +837,7 @@ int __init check_ivt(void *iva)
return 0;
}
#ifndef __LP64__
#ifndef CONFIG_64BIT
extern const void fault_vector_11;
#endif
extern const void fault_vector_20;
@@ -852,7 +849,7 @@ void __init trap_init(void)
if (boot_cpu_data.cpu_type >= pcxu)
iva = (void *) &fault_vector_20;
else
#ifdef __LP64__
#ifdef CONFIG_64BIT
panic("Can't boot 64-bit OS on PA1.1 processor!");
#else
iva = (void *) &fault_vector_11;

115
arch/parisc/kernel/unaligned.c
View File

@@ -20,8 +20,11 @@
*
*/
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
/* #define DEBUG_UNALIGNED 1 */
@@ -32,7 +35,7 @@
#define DPRINTF(fmt, args...)
#endif
#ifdef __LP64__
#ifdef CONFIG_64BIT
#define RFMT "%016lx"
#else
#define RFMT "%08lx"
@@ -147,15 +150,8 @@ static int emulate_ldh(struct pt_regs *regs, int toreg)
"4: ldi -2, %1\n"
FIXUP_BRANCH(3b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,4b\n"
" .dword 2b,4b\n"
#else
" .word 1b,4b\n"
" .word 2b,4b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b, 4b)
ASM_EXCEPTIONTABLE_ENTRY(2b, 4b)
: "=r" (val), "=r" (ret)
: "0" (val), "r" (saddr), "r" (regs->isr)
: "r20", FIXUP_BRANCH_CLOBBER );
@@ -192,15 +188,8 @@ static int emulate_ldw(struct pt_regs *regs, int toreg, int flop)
"4: ldi -2, %1\n"
FIXUP_BRANCH(3b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,4b\n"
" .dword 2b,4b\n"
#else
" .word 1b,4b\n"
" .word 2b,4b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b, 4b)
ASM_EXCEPTIONTABLE_ENTRY(2b, 4b)
: "=r" (val), "=r" (ret)
: "0" (val), "r" (saddr), "r" (regs->isr)
: "r19", "r20", FIXUP_BRANCH_CLOBBER );
@@ -224,7 +213,7 @@ static int emulate_ldd(struct pt_regs *regs, int toreg, int flop)
regs->isr, regs->ior, toreg);
#ifdef CONFIG_PA20
#ifndef __LP64__
#ifndef CONFIG_64BIT
if (!flop)
return -1;
#endif
@@ -243,15 +232,8 @@ static int emulate_ldd(struct pt_regs *regs, int toreg, int flop)
"4: ldi -2, %1\n"
FIXUP_BRANCH(3b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,4b\n"
" .dword 2b,4b\n"
#else
" .word 1b,4b\n"
" .word 2b,4b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,4b)
ASM_EXCEPTIONTABLE_ENTRY(2b,4b)
: "=r" (val), "=r" (ret)
: "0" (val), "r" (saddr), "r" (regs->isr)
: "r19", "r20", FIXUP_BRANCH_CLOBBER );
@@ -275,17 +257,9 @@ static int emulate_ldd(struct pt_regs *regs, int toreg, int flop)
"5: ldi -2, %2\n"
FIXUP_BRANCH(4b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,5b\n"
" .dword 2b,5b\n"
" .dword 3b,5b\n"
#else
" .word 1b,5b\n"
" .word 2b,5b\n"
" .word 3b,5b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,5b)
ASM_EXCEPTIONTABLE_ENTRY(2b,5b)
ASM_EXCEPTIONTABLE_ENTRY(3b,5b)
: "=r" (valh), "=r" (vall), "=r" (ret)
: "0" (valh), "1" (vall), "r" (saddr), "r" (regs->isr)
: "r19", "r20", FIXUP_BRANCH_CLOBBER );
@@ -325,15 +299,8 @@ static int emulate_sth(struct pt_regs *regs, int frreg)
"4: ldi -2, %0\n"
FIXUP_BRANCH(3b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,4b\n"
" .dword 2b,4b\n"
#else
" .word 1b,4b\n"
" .word 2b,4b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,4b)
ASM_EXCEPTIONTABLE_ENTRY(2b,4b)
: "=r" (ret)
: "r" (val), "r" (regs->ior), "r" (regs->isr)
: "r19", FIXUP_BRANCH_CLOBBER );
@@ -379,15 +346,8 @@ static int emulate_stw(struct pt_regs *regs, int frreg, int flop)
"4: ldi -2, %0\n"
FIXUP_BRANCH(3b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,4b\n"
" .dword 2b,4b\n"
#else
" .word 1b,4b\n"
" .word 2b,4b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,4b)
ASM_EXCEPTIONTABLE_ENTRY(2b,4b)
: "=r" (ret)
: "r" (val), "r" (regs->ior), "r" (regs->isr)
: "r19", "r20", "r21", "r22", "r1", FIXUP_BRANCH_CLOBBER );
@@ -410,7 +370,7 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop)
val, regs->isr, regs->ior);
#ifdef CONFIG_PA20
#ifndef __LP64__
#ifndef CONFIG_64BIT
if (!flop)
return -1;
#endif
@@ -436,19 +396,10 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop)
"6: ldi -2, %0\n"
FIXUP_BRANCH(5b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,6b\n"
" .dword 2b,6b\n"
" .dword 3b,6b\n"
" .dword 4b,6b\n"
#else
" .word 1b,6b\n"
" .word 2b,6b\n"
" .word 3b,6b\n"
" .word 4b,6b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,6b)
ASM_EXCEPTIONTABLE_ENTRY(2b,6b)
ASM_EXCEPTIONTABLE_ENTRY(3b,6b)
ASM_EXCEPTIONTABLE_ENTRY(4b,6b)
: "=r" (ret)
: "r" (val), "r" (regs->ior), "r" (regs->isr)
: "r19", "r20", "r21", "r22", "r1", FIXUP_BRANCH_CLOBBER );
@@ -479,21 +430,11 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop)
"7: ldi -2, %0\n"
FIXUP_BRANCH(6b)
" .previous\n"
" .section __ex_table,\"aw\"\n"
#ifdef __LP64__
" .dword 1b,7b\n"
" .dword 2b,7b\n"
" .dword 3b,7b\n"
" .dword 4b,7b\n"
" .dword 5b,7b\n"
#else
" .word 1b,7b\n"
" .word 2b,7b\n"
" .word 3b,7b\n"
" .word 4b,7b\n"
" .word 5b,7b\n"
#endif
" .previous\n"
ASM_EXCEPTIONTABLE_ENTRY(1b,7b)
ASM_EXCEPTIONTABLE_ENTRY(2b,7b)
ASM_EXCEPTIONTABLE_ENTRY(3b,7b)
ASM_EXCEPTIONTABLE_ENTRY(4b,7b)
ASM_EXCEPTIONTABLE_ENTRY(5b,7b)
: "=r" (ret)
: "r" (valh), "r" (vall), "r" (regs->ior), "r" (regs->isr)
: "r19", "r20", "r21", "r1", FIXUP_BRANCH_CLOBBER );

1
arch/parisc/kernel/unwind.c
View File

@@ -10,6 +10,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kallsyms.h>

2
arch/parisc/kernel/vmlinux.lds.S
View File

@@ -68,6 +68,8 @@ SECTIONS
RODATA
BUG_TABLE
/* writeable */
. = ALIGN(ASM_PAGE_SIZE); /* Make sure this is page aligned so
that we can properly leave these