#undef END
#define END(sym) .end sym
-/* Note that PSEUDO/PSEUDO_END use label number 1996---do not use a
- label of that number between those two macros! */
-
#ifdef PROF
# define PSEUDO_PROLOGUE \
.frame sp, 0, ra; \
jsr AT,(AT),_mcount; \
.set at; \
.prologue 1
-# define PSEUDO_LOADGP
-#else
+#elif defined PIC
# define PSEUDO_PROLOGUE \
.frame sp, 0, ra; \
.prologue 0
-# define PSEUDO_LOADGP \
- br gp, 2f; \
-2: ldgp gp, 0(gp)
+#else
+# define PSEUDO_PROLOGUE \
+ .frame sp, 0, ra; \
+ ldgp gp,0(pv); \
+ .prologue 1
#endif /* PROF */
#if RTLD_PRIVATE_ERRNO
+# define SYSCALL_ERROR_LABEL $syscall_error
# define SYSCALL_ERROR_HANDLER \
stl v0, errno(gp) !gprel; \
lda v0, -1; \
ret
+#elif defined(PIC)
+# define SYSCALL_ERROR_LABEL __syscall_error
+# define SYSCALL_ERROR_HANDLER \
+ br $31, __syscall_error !samegp
#else
+# define SYSCALL_ERROR_LABEL $syscall_error
# define SYSCALL_ERROR_HANDLER \
jmp $31, __syscall_error
#endif /* RTLD_PRIVATE_ERRNO */
-#if defined(PIC) && !RTLD_PRIVATE_ERRNO
-# define PSEUDO(name, syscall_name, args) \
+/* Overridden by specific syscalls. */
+#undef PSEUDO_PREPARE_ARGS
+#define PSEUDO_PREPARE_ARGS /* Nothing. */
+
+#define PSEUDO(name, syscall_name, args) \
.globl name; \
.align 4; \
.ent name,0; \
PSEUDO_PREPARE_ARGS \
lda v0, SYS_ify(syscall_name); \
call_pal PAL_callsys; \
- bne a3, __syscall_error !samegp; \
-3:
-# undef PSEUDO_END
+ bne a3, SYSCALL_ERROR_LABEL
+
+#undef PSEUDO_END
+#if defined(PIC) && !RTLD_PRIVATE_ERRNO
# define PSEUDO_END(sym) END(sym)
#else
-# define PSEUDO(name, syscall_name, args) \
- .globl name; \
- .align 4; \
- .ent name,0; \
-__LABEL(name) \
- PSEUDO_PREPARE_ARGS \
- lda v0, SYS_ify(syscall_name); \
- call_pal PAL_callsys; \
- bne a3, 1996f; \
-3:
-
-# undef PSEUDO_END
# define PSEUDO_END(sym) \
-1996: \
- PSEUDO_LOADGP; \
+$syscall_error: \
SYSCALL_ERROR_HANDLER; \
END(sym)
-#endif /* PIC && !RTLD_PRIVATE_ERRNO */
-
-#undef PSEUDO_PREPARE_ARGS
-#define PSEUDO_PREPARE_ARGS /* Nothing. */
+#endif
#define r0 v0
#define r1 a4
#define MOVE(x,y) mov x,y
+#else /* !ASSEMBLER */
+
+/* ??? Linux needs to be able to override INLINE_SYSCALL for one
+ particular special case. Make this easy. */
+
+#define INLINE_SYSCALL(name, nr, args...) \
+ INLINE_SYSCALL1(name, nr, args)
+
+#define INLINE_SYSCALL1(name, nr, args...) \
+({ \
+ long _sc_ret, _sc_err; \
+ inline_syscall##nr(name, args); \
+ if (_sc_err) \
+ { \
+ __set_errno (_sc_ret); \
+ _sc_ret = -1L; \
+ } \
+ _sc_ret; \
+})
+
+#define INTERNAL_SYSCALL(name, err_out, nr, args...) \
+ INTERNAL_SYSCALL1(name, err_out, nr, args)
+
+#define INTERNAL_SYSCALL1(name, err_out, nr, args...) \
+({ \
+ long _sc_ret, _sc_err; \
+ inline_syscall##nr(name, args); \
+ err_out = _sc_err; \
+ _sc_ret; \
+})
+
+#define INTERNAL_SYSCALL_DECL(err) long int err
+#define INTERNAL_SYSCALL_ERROR_P(val, err) err
+#define INTERNAL_SYSCALL_ERRNO(val, err) val
+
+#define inline_syscall_clobbers \
+ "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
+ "$22", "$23", "$24", "$25", "$27", "$28", "memory"
+
+/* If TLS is in use, we have a conflict between the PAL_rduniq primitive,
+ as modeled within GCC, and explicit use of the R0 register. If we use
+ the register via the asm, the scheduler may place the PAL_rduniq insn
+ before we've copied the data from R0 into _sc_ret. If this happens
+ we'll get a reload abort, since R0 is live at the same time it is
+ needed for the PAL_rduniq.
+
+ Solve this by using the "v" constraint instead of an asm for the syscall
+ output. We don't do this unconditionally to allow compilation with
+ older compilers. */
+
+#ifdef USE_TLS
+#define inline_syscall_r0_asm
+#define inline_syscall_r0_out_constraint "=v"
+#else
+#define inline_syscall_r0_asm __asm__("$0")
+#define inline_syscall_r0_out_constraint "=r"
+#endif
+
+/* It is moderately important optimization-wise to limit the lifetime
+ of the hard-register variables as much as possible. Thus we copy
+ in/out as close to the asm as possible. */
+
+#define inline_syscall0(name, args...) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = __NR_##name; \
+ __asm__("callsys # %0 %1 <= %2" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19) \
+ : "0"(_sc_0) \
+ : inline_syscall_clobbers, \
+ "$16", "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall1(name,arg1) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ __asm__("callsys # %0 %1 <= %2 %3" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16) \
+ : "0"(_sc_0), "2"(_sc_16) \
+ : inline_syscall_clobbers, \
+ "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall2(name,arg1,arg2) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ __asm__("callsys # %0 %1 <= %2 %3 %4" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \
+ : inline_syscall_clobbers, \
+ "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall3(name,arg1,arg2,arg3) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ __asm__("callsys # %0 %1 <= %2 %3 %4 %5" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18) \
+ : inline_syscall_clobbers, "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall4(name,arg1,arg2,arg3,arg4) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18), "1"(_sc_19) \
+ : inline_syscall_clobbers, "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ register long _sc_20 __asm__("$20"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ _sc_20 = (long) (arg5); \
+ __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18), "=r"(_sc_20) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18), "1"(_sc_19), "5"(_sc_20) \
+ : inline_syscall_clobbers, "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ register long _sc_20 __asm__("$20"); \
+ register long _sc_21 __asm__("$21"); \
+ \
+ _sc_0 = __NR_##name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ _sc_20 = (long) (arg5); \
+ _sc_21 = (long) (arg6); \
+ __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19) "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18), "=r"(_sc_20), "=r"(_sc_21) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18), "1"(_sc_19), "5"(_sc_20), \
+ "6"(_sc_21) \
+ : inline_syscall_clobbers); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
#endif /* ASSEMBLER */
projects / external / glibc.git / commitdiff