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arch/tile: Use <asm-generic/syscalls.h>

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With this change we now include <asm-generic/syscalls.h> into the "tile"
version of the header.  To take full advantage of the prototypes there,
we also change our naming convention for "struct pt_regs *" syscalls so
that, e.g., _sys_execve() is the "true" syscall entry, which sets the
appropriate register to point to the pt_regs before calling sys_execve().

While doing this I realized I no longer needed the fork and vfork
entry point stubs, since those functions aren't in the generic
syscall ABI, so I removed them as well.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2010-10-14 14:34:33 -04:00
parent ce0ecc8abf
commit d929b6aeaa
9 changed files with 76 additions and 103 deletions
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23
arch/tile/kernel/intvec_32.S
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@@ -1524,28 +1524,23 @@ STD_ENTRY_LOCAL(bad_intr)
/* Put address of pt_regs in reg and jump. */
#define PTREGS_SYSCALL(x, reg) \
STD_ENTRY(x); \
STD_ENTRY(_##x); \
{ \
PTREGS_PTR(reg, PTREGS_OFFSET_BASE); \
j _##x \
j x \
}; \
STD_ENDPROC(x)
STD_ENDPROC(_##x)
PTREGS_SYSCALL(sys_execve, r3)
PTREGS_SYSCALL(sys_sigaltstack, r2)
PTREGS_SYSCALL(sys_rt_sigreturn, r0)
PTREGS_SYSCALL(sys_cmpxchg_badaddr, r1)
/* Save additional callee-saves to pt_regs, put address in reg and jump. */
#define PTREGS_SYSCALL_ALL_REGS(x, reg) \
STD_ENTRY(x); \
push_extra_callee_saves reg; \
j _##x; \
STD_ENDPROC(x)
PTREGS_SYSCALL_ALL_REGS(sys_fork, r0)
PTREGS_SYSCALL_ALL_REGS(sys_vfork, r0)
PTREGS_SYSCALL_ALL_REGS(sys_clone, r4)
PTREGS_SYSCALL_ALL_REGS(sys_cmpxchg_badaddr, r1)
/* Save additional callee-saves to pt_regs, put address in r4 and jump. */
STD_ENTRY(_sys_clone)
push_extra_callee_saves r4
j sys_clone
STD_ENDPROC(_sys_clone)
/*
* This entrypoint is taken for the cmpxchg and atomic_update fast