diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sysdep.h | 141 |
1 files changed, 111 insertions, 30 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h index c298461cc2..6c418b6ab1 100644 --- a/sysdeps/unix/sysv/linux/ia64/sysdep.h +++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h @@ -23,6 +23,8 @@ #include <sysdeps/unix/sysdep.h> #include <sysdeps/ia64/sysdep.h> +#include <dl-sysdep.h> +#include <tls.h> /* As of GAS v2.4.90.0.7, including a ".align" directive inside a function will cause bad unwind info to be emitted (GAS doesn't know @@ -58,6 +60,14 @@ # define __NR_semtimedop 1247 #endif +#if defined USE_DL_SYSINFO \ + && (!defined NOT_IN_libc \ + || defined IS_IN_libpthread || defined IS_IN_librt) +# define IA64_USE_NEW_STUB +#else +# undef IA64_USE_NEW_STUB +#endif + #ifdef __ASSEMBLER__ #undef CALL_MCOUNT @@ -102,9 +112,45 @@ cmp.eq p6,p0=-1,r10; \ (p6) br.cond.spnt.few __syscall_error; -#define DO_CALL(num) \ +#define DO_CALL_VIA_BREAK(num) \ mov r15=num; \ - break __BREAK_SYSCALL; + break __BREAK_SYSCALL + +#ifdef IA64_USE_NEW_STUB +# ifdef SHARED +# define DO_CALL(num) \ + .prologue; \ + adds r2 = SYSINFO_OFFSET, r13;; \ + ld8 r2 = [r2]; \ + .save ar.pfs, r11; \ + mov r11 = ar.pfs;; \ + .body; \ + mov r15 = num; \ + mov b7 = r2; \ + br.call.sptk.many b6 = b7;; \ + .restore sp; \ + mov ar.pfs = r11; \ + .prologue; \ + .body +# else /* !SHARED */ +# define DO_CALL(num) \ + .prologue; \ + mov r15 = num; \ + movl r2 = _dl_sysinfo;; \ + ld8 r2 = [r2]; \ + .save ar.pfs, r11; \ + mov r11 = ar.pfs;; \ + .body; \ + mov b7 = r2; \ + br.call.sptk.many b6 = b7;; \ + .restore sp; \ + mov ar.pfs = r11; \ + .prologue; \ + .body +# endif +#else +# define DO_CALL(num) DO_CALL_VIA_BREAK(num) +#endif #undef PSEUDO_END #define PSEUDO_END(name) .endp C_SYMBOL_NAME(name); @@ -150,45 +196,64 @@ from a syscall. r10 is set to -1 on error, whilst r8 contains the (non-negative) errno on error or the return value on success. */ -#undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ - ({ \ + +#ifdef IA64_USE_NEW_STUB + +#define DO_INLINE_SYSCALL(name, nr, args...) \ + register long _r8 __asm ("r8"); \ + register long _r10 __asm ("r10"); \ + register long _r15 __asm ("r15") = __NR_##name; \ + register void *_b7 __asm ("b7") = ((tcbhead_t *) __thread_self)->private; \ + long _retval; \ + LOAD_ARGS_##nr (args); \ + /* \ + * Don't specify any unwind info here. We mark ar.pfs as \ + * clobbered. This will force the compiler to save ar.pfs \ + * somewhere and emit appropriate unwind info for that save. \ + */ \ + __asm __volatile ("br.call.sptk.many b6=%0;;\n" \ + : "=b"(_b7), "=r" (_r8), "=r" (_r10), "=r" (_r15) \ + ASM_OUTARGS_##nr \ + : "0" (_b7), "3" (_r15) ASM_ARGS_##nr \ + : "memory", "ar.pfs" ASM_CLOBBERS_##nr); \ + _retval = _r8; + +#else /* !IA64_USE_NEW_STUB */ + +#define DO_INLINE_SYSCALL(name, nr, args...) \ register long _r8 asm ("r8"); \ register long _r10 asm ("r10"); \ register long _r15 asm ("r15") = __NR_##name; \ long _retval; \ LOAD_ARGS_##nr (args); \ __asm __volatile (BREAK_INSN (__BREAK_SYSCALL) \ - : "=r" (_r8), "=r" (_r10), "=r" (_r15) \ + : "=r" (_r8), "=r" (_r10), "=r" (_r15) \ ASM_OUTARGS_##nr \ - : "2" (_r15) ASM_ARGS_##nr \ - : "memory" ASM_CLOBBERS_##nr); \ - _retval = _r8; \ - if (_r10 == -1) \ - { \ - __set_errno (_retval); \ - _retval = -1; \ - } \ + : "2" (_r15) ASM_ARGS_##nr \ + : "memory" ASM_CLOBBERS_##nr); \ + _retval = _r8; + +#endif /* !IA64_USE_NEW_STUB */ + +#undef INLINE_SYSCALL +#define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + DO_INLINE_SYSCALL(name, nr, args) \ + if (_r10 == -1) \ + { \ + __set_errno (_retval); \ + _retval = -1; \ + } \ _retval; }) #undef INTERNAL_SYSCALL_DECL #define INTERNAL_SYSCALL_DECL(err) long int err #undef INTERNAL_SYSCALL -#define INTERNAL_SYSCALL(name, err, nr, args...) \ - ({ \ - register long _r8 asm ("r8"); \ - register long _r10 asm ("r10"); \ - register long _r15 asm ("r15") = __NR_##name; \ - long _retval; \ - LOAD_ARGS_##nr (args); \ - __asm __volatile (BREAK_INSN (__BREAK_SYSCALL) \ - : "=r" (_r8), "=r" (_r10), "=r" (_r15) \ - ASM_OUTARGS_##nr \ - : "2" (_r15) ASM_ARGS_##nr \ - : "memory" ASM_CLOBBERS_##nr); \ - _retval = _r8; \ - err = _r10; \ +#define INTERNAL_SYSCALL(name, err, nr, args...) \ + ({ \ + DO_INLINE_SYSCALL(name, nr, args) \ + err = _r10; \ _retval; }) #undef INTERNAL_SYSCALL_ERROR_P @@ -225,6 +290,15 @@ #define ASM_OUTARGS_5 ASM_OUTARGS_4, "=r" (_out4) #define ASM_OUTARGS_6 ASM_OUTARGS_5, "=r" (_out5) +#ifdef IA64_USE_NEW_STUB +#define ASM_ARGS_0 +#define ASM_ARGS_1 ASM_ARGS_0, "4" (_out0) +#define ASM_ARGS_2 ASM_ARGS_1, "5" (_out1) +#define ASM_ARGS_3 ASM_ARGS_2, "6" (_out2) +#define ASM_ARGS_4 ASM_ARGS_3, "7" (_out3) +#define ASM_ARGS_5 ASM_ARGS_4, "8" (_out4) +#define ASM_ARGS_6 ASM_ARGS_5, "9" (_out5) +#else #define ASM_ARGS_0 #define ASM_ARGS_1 ASM_ARGS_0, "3" (_out0) #define ASM_ARGS_2 ASM_ARGS_1, "4" (_out1) @@ -232,6 +306,7 @@ #define ASM_ARGS_4 ASM_ARGS_3, "6" (_out3) #define ASM_ARGS_5 ASM_ARGS_4, "7" (_out4) #define ASM_ARGS_6 ASM_ARGS_5, "8" (_out5) +#endif #define ASM_CLOBBERS_0 ASM_CLOBBERS_1, "out0" #define ASM_CLOBBERS_1 ASM_CLOBBERS_2, "out1" @@ -239,7 +314,7 @@ #define ASM_CLOBBERS_3 ASM_CLOBBERS_4, "out3" #define ASM_CLOBBERS_4 ASM_CLOBBERS_5, "out4" #define ASM_CLOBBERS_5 ASM_CLOBBERS_6, "out5" -#define ASM_CLOBBERS_6 , "out6", "out7", \ +#define ASM_CLOBBERS_6_COMMON , "out6", "out7", \ /* Non-stacked integer registers, minus r8, r10, r15. */ \ "r2", "r3", "r9", "r11", "r12", "r13", "r14", "r16", "r17", "r18", \ "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", \ @@ -249,7 +324,13 @@ /* Non-rotating fp registers. */ \ "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ /* Branch registers. */ \ - "b6", "b7" + "b6" + +#ifdef IA64_USE_NEW_STUB +# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON +#else +# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7" +#endif #endif /* not __ASSEMBLER__ */ |