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x86: pass in pt_regs pointer for syscalls that need it

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Some syscalls need to access the pt_regs structure, either to copy
user register state or to modifiy it.  This patch adds stubs to load
the address of the pt_regs struct into the %eax register, and changes
the syscalls to regparm(1) to receive the pt_regs pointer as the
first argument.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Brian Gerst
2009-02-10 09:51:46 -05:00
committed by Ingo Molnar
parent aa78bcfa01
commit 253f29a4ae
8 changed files with 81 additions and 80 deletions
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20
arch/x86/kernel/syscall_table_32.S
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@@ -1,7 +1,7 @@
ENTRY(sys_call_table)
.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
.long sys_exit
.long sys_fork
.long ptregs_fork
.long sys_read
.long sys_write
.long sys_open /* 5 */
@@ -10,7 +10,7 @@ ENTRY(sys_call_table)
.long sys_creat
.long sys_link
.long sys_unlink /* 10 */
.long sys_execve
.long ptregs_execve
.long sys_chdir
.long sys_time
.long sys_mknod
@@ -109,17 +109,17 @@ ENTRY(sys_call_table)
.long sys_newlstat
.long sys_newfstat
.long sys_uname
.long sys_iopl /* 110 */
.long ptregs_iopl /* 110 */
.long sys_vhangup
.long sys_ni_syscall /* old "idle" system call */
.long sys_vm86old
.long ptregs_vm86old
.long sys_wait4
.long sys_swapoff /* 115 */
.long sys_sysinfo
.long sys_ipc
.long sys_fsync
.long sys_sigreturn
.long sys_clone /* 120 */
.long ptregs_sigreturn
.long ptregs_clone /* 120 */
.long sys_setdomainname
.long sys_newuname
.long sys_modify_ldt
@@ -165,14 +165,14 @@ ENTRY(sys_call_table)
.long sys_mremap
.long sys_setresuid16
.long sys_getresuid16 /* 165 */
.long sys_vm86
.long ptregs_vm86
.long sys_ni_syscall /* Old sys_query_module */
.long sys_poll
.long sys_nfsservctl
.long sys_setresgid16 /* 170 */
.long sys_getresgid16
.long sys_prctl
.long sys_rt_sigreturn
.long ptregs_rt_sigreturn
.long sys_rt_sigaction
.long sys_rt_sigprocmask /* 175 */
.long sys_rt_sigpending
@@ -185,11 +185,11 @@ ENTRY(sys_call_table)
.long sys_getcwd
.long sys_capget
.long sys_capset /* 185 */
.long sys_sigaltstack
.long ptregs_sigaltstack
.long sys_sendfile
.long sys_ni_syscall /* reserved for streams1 */
.long sys_ni_syscall /* reserved for streams2 */
.long sys_vfork /* 190 */
.long ptregs_vfork /* 190 */
.long sys_getrlimit
.long sys_mmap2
.long sys_truncate64