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(INLINE_SYSCALL*): New.
(inline_syscall*): New.
This commit is contained in:
Ulrich Drepper
parent
9dda87abb5
commit
13d54c34ab
@ -109,4 +109,167 @@ __LABEL(name) \
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#define MOVE(x,y) mov x,y
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#endif
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#else /* !ASSEMBLER */
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/* Define a macro which expands inline into the wrapper code for a
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system call. */
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#undef INLINE_SYSCALL
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#define INLINE_SYSCALL(name, nr, args...) INLINE_SYSCALL1(name, nr, args)
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#define INLINE_SYSCALL1(name, nr, args...) \
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({ \
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long _sc_ret, _sc_err; \
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inline_syscall##nr(name, args); \
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if (_sc_err) \
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{ \
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__set_errno (_sc_ret); \
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_sc_ret = -1L; \
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} \
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_sc_ret; \
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})
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#define inline_syscall_clobbers \
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"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
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"$22", "$23", "$24", "$25", "$27", "$28"
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/* It is moderately important optimization-wise to limit the lifetime
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of the hard-register variables as much as possible. Thus we copy
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in/out as close to the asm as possible. */
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#define inline_syscall0(name) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = __NR_##name; \
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__asm__("callsys # %0 %1 <= %2" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall1(name,arg1) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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__asm__("callsys # %0 %1 <= %2 %3" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall2(name,arg1,arg2) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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__asm__("callsys # %0 %1 <= %2 %3 %4" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall3(name,arg1,arg2,arg3) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_18 __asm__("$18"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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_sc_18 = (long) (arg3); \
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__asm__("callsys # %0 %1 <= %2 %3 %4 %5" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \
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"r"(_sc_18) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall4(name,arg1,arg2,arg3,arg4) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_18 __asm__("$18"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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_sc_18 = (long) (arg3); \
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_sc_19 = (long) (arg4); \
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__asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \
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"r"(_sc_18), "1"(_sc_19) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_18 __asm__("$18"); \
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register long _sc_19 __asm__("$19"); \
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register long _sc_20 __asm__("$20"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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_sc_18 = (long) (arg3); \
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_sc_19 = (long) (arg4); \
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_sc_20 = (long) (arg5); \
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__asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \
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"r"(_sc_18), "1"(_sc_19), "r"(_sc_20) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
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{ \
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register long _sc_0 __asm__("$0"); \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_18 __asm__("$18"); \
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register long _sc_19 __asm__("$19"); \
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register long _sc_20 __asm__("$20"); \
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register long _sc_21 __asm__("$21"); \
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\
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_sc_0 = __NR_##name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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_sc_18 = (long) (arg3); \
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_sc_19 = (long) (arg4); \
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_sc_20 = (long) (arg5); \
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_sc_21 = (long) (arg6); \
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__asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \
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: "=r"(_sc_0), "=r"(_sc_19) \
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: "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \
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"r"(_sc_18), "1"(_sc_19), "r"(_sc_20), \
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"r"(_sc_21) \
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: inline_syscall_clobbers); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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#endif /* ASSEMBLER */
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