diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/mach/powerpc/machine-lock.h | 15 | ||||
| -rw-r--r-- | sysdeps/powerpc/elf/sysdep.h | 137 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/sysdep.h | 118 |
3 files changed, 147 insertions, 123 deletions
diff --git a/sysdeps/mach/powerpc/machine-lock.h b/sysdeps/mach/powerpc/machine-lock.h index 126cd6e0f6..96e833ca15 100644 --- a/sysdeps/mach/powerpc/machine-lock.h +++ b/sysdeps/mach/powerpc/machine-lock.h @@ -38,8 +38,12 @@ typedef __volatile long int __spin_lock_t; _EXTERN_INLINE void __spin_unlock (__spin_lock_t *__lock) { - __asm__ __volatile__ ("sync ; stwcx. %1,0,%0" - : : "r" (__lock), "r" (0) : "cr0"); + long int __locked; + __asm__ __volatile__ ("\ +0: lwarx %0,0,%1 + stwcx. %2,0,%1 + bne- 0b +" : "=&r" (__locked) : "r" (__lock), "r" (0) : "cr0"); } /* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ @@ -48,13 +52,12 @@ _EXTERN_INLINE int __spin_try_lock (register __spin_lock_t *__lock) { long int __rtn; - __asm__ __volatile__ ("\ 0: lwarx %0,0,%1 stwcx. %2,0,%1 bne- 0b -" : "=&r"(__rtn) : "r"(__lock), "r"(1) : "cr0"); - return ~__rtn; +" : "=&r" (__rtn) : "r" (__lock), "r" (1) : "cr0"); + return !__rtn; } /* Return nonzero if LOCK is locked. */ @@ -67,7 +70,7 @@ __spin_lock_locked (__spin_lock_t *__lock) 0: lwarx %0,0,%1 stwcx. %0,0,%1 bne- 0b -" : "=&r"(__rtn) : "r"(__lock) : "cr0"); +" : "=&r" (__rtn) : "r" (__lock) : "cr0"); return __rtn; } diff --git a/sysdeps/powerpc/elf/sysdep.h b/sysdeps/powerpc/elf/sysdep.h new file mode 100644 index 0000000000..b51adda6fa --- /dev/null +++ b/sysdeps/powerpc/elf/sysdep.h @@ -0,0 +1,137 @@ +/* assembly code macros for ELF PowerPC hosts + Copyright (C) 1999,2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdeps/powerpc/sysdep.h> + +#ifdef __ASSEMBLER__ + +/* This seems to always be the case on PPC. */ +#define ALIGNARG(log2) log2 +/* For ELF we need the `.type' directive to make shared libs work right. */ +#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg; +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +/* If compiled for profiling, call `_mcount' at the start of each function. */ +#ifdef PROF +/* The mcount code relies on a the return address being on the stack + to locate our caller and so it can restore it; so store one just + for its benefit. */ +#ifdef PIC +#define CALL_MCOUNT \ + .pushsection; \ + .section ".data"; \ + .align ALIGNARG(2); \ +0:.long 0; \ + .previous; \ + mflr r0; \ + stw r0,4(r1); \ + bl _GLOBAL_OFFSET_TABLE_@local-4; \ + mflr r11; \ + lwz r0,0b@got(r11); \ + bl JUMPTARGET(_mcount); +#else /* PIC */ +#define CALL_MCOUNT \ + .section ".data"; \ + .align ALIGNARG(2); \ +0:.long 0; \ + .previous; \ + mflr r0; \ + lis r11,0b@ha; \ + stw r0,4(r1); \ + addi r0,r11,0b@l; \ + bl JUMPTARGET(_mcount); +#endif /* PIC */ +#else /* PROF */ +#define CALL_MCOUNT /* Do nothing. */ +#endif /* PROF */ + +#define ENTRY(name) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ + .align ALIGNARG(2); \ + C_LABEL(name) \ + CALL_MCOUNT + +#define EALIGN_W_0 /* No words to insert. */ +#define EALIGN_W_1 nop +#define EALIGN_W_2 nop;nop +#define EALIGN_W_3 nop;nop;nop +#define EALIGN_W_4 EALIGN_W_3;nop +#define EALIGN_W_5 EALIGN_W_4;nop +#define EALIGN_W_6 EALIGN_W_5;nop +#define EALIGN_W_7 EALIGN_W_6;nop + +/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes + past a 2^align boundary. */ +#ifdef PROF +#define EALIGN(name, alignt, words) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ + .align ALIGNARG(2); \ + C_LABEL(name) \ + CALL_MCOUNT \ + b 0f; \ + .align ALIGNARG(alignt); \ + EALIGN_W_##words; \ + 0: +#else /* PROF */ +#define EALIGN(name, alignt, words) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ + .align ALIGNARG(alignt); \ + EALIGN_W_##words; \ + C_LABEL(name) +#endif + +#undef END +#define END(name) \ + ASM_SIZE_DIRECTIVE(name) + +#define DO_CALL(syscall) \ + li 0,syscall; \ + sc + +#ifdef PIC +#define JUMPTARGET(name) name##@plt +#else +#define JUMPTARGET(name) name +#endif + +#define PSEUDO(name, syscall_name, args) \ + .section ".text"; \ + ENTRY (name) \ + DO_CALL (SYS_ify (syscall_name)); + +#define PSEUDO_RET \ + bnslr; \ + b JUMPTARGET(__syscall_error) +#define ret PSEUDO_RET + +#undef PSEUDO_END +#define PSEUDO_END(name) \ + END (name) + +/* Local labels stripped out by the linker. */ +#undef L +#define L(x) .L##x + +/* Label in text section. */ +#define C_TEXT(name) name + +#endif /* __ASSEMBLER__ */ diff --git a/sysdeps/unix/sysv/linux/powerpc/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/sysdep.h index ea924db168..904ff0a4f3 100644 --- a/sysdeps/unix/sysv/linux/powerpc/sysdep.h +++ b/sysdeps/unix/sysv/linux/powerpc/sysdep.h @@ -20,6 +20,7 @@ #define _LINUX_POWERPC_SYSDEP_H 1 #include <sysdeps/unix/powerpc/sysdep.h> +#include <sysdeps/powerpc/elf/sysdep.h> /* For Linux we can use the system call table in the header file /usr/include/asm/unistd.h @@ -32,121 +33,4 @@ # define SYS_ify(syscall_name) __NR_/**/syscall_name #endif -#ifdef __ASSEMBLER__ - -/* This seems to always be the case on PPC. */ -#define ALIGNARG(log2) log2 -/* For ELF we need the `.type' directive to make shared libs work right. */ -#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg; -#define ASM_SIZE_DIRECTIVE(name) .size name,.-name - -/* If compiled for profiling, call `_mcount' at the start of each function. */ -#ifdef PROF -/* The mcount code relies on a the return address being on the stack - to locate our caller and so it can restore it; so store one just - for its benefit. */ -#ifdef PIC -#define CALL_MCOUNT \ - .pushsection; \ - .section ".data"; \ - .align ALIGNARG(2); \ -0:.long 0; \ - .previous; \ - mflr r0; \ - stw r0,4(r1); \ - bl _GLOBAL_OFFSET_TABLE_@local-4; \ - mflr r11; \ - lwz r0,0b@got(r11); \ - bl JUMPTARGET(_mcount); -#else /* PIC */ -#define CALL_MCOUNT \ - .section ".data"; \ - .align ALIGNARG(2); \ -0:.long 0; \ - .previous; \ - mflr r0; \ - lis r11,0b@ha; \ - stw r0,4(r1); \ - addi r0,r11,0b@l; \ - bl JUMPTARGET(_mcount); -#endif /* PIC */ -#else /* PROF */ -#define CALL_MCOUNT /* Do nothing. */ -#endif /* PROF */ - -#define ENTRY(name) \ - ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ - ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ - .align ALIGNARG(2); \ - C_LABEL(name) \ - CALL_MCOUNT - -#define EALIGN_W_0 /* No words to insert. */ -#define EALIGN_W_1 nop -#define EALIGN_W_2 nop;nop -#define EALIGN_W_3 nop;nop;nop -#define EALIGN_W_4 EALIGN_W_3;nop -#define EALIGN_W_5 EALIGN_W_4;nop -#define EALIGN_W_6 EALIGN_W_5;nop -#define EALIGN_W_7 EALIGN_W_6;nop - -/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes - past a 2^align boundary. */ -#ifdef PROF -#define EALIGN(name, alignt, words) \ - ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ - ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ - .align ALIGNARG(2); \ - C_LABEL(name) \ - CALL_MCOUNT \ - b 0f; \ - .align ALIGNARG(alignt); \ - EALIGN_W_##words; \ - 0: -#else /* PROF */ -#define EALIGN(name, alignt, words) \ - ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ - ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ - .align ALIGNARG(alignt); \ - EALIGN_W_##words; \ - C_LABEL(name) -#endif - -#undef END -#define END(name) \ - ASM_SIZE_DIRECTIVE(name) - -#define DO_CALL(syscall) \ - li 0,syscall; \ - sc - -#ifdef PIC -#define JUMPTARGET(name) name##@plt -#else -#define JUMPTARGET(name) name -#endif - -#define PSEUDO(name, syscall_name, args) \ - .section ".text"; \ - ENTRY (name) \ - DO_CALL (SYS_ify (syscall_name)); - -#define PSEUDO_RET \ - bnslr; \ - b JUMPTARGET(__syscall_error) -#define ret PSEUDO_RET - -#undef PSEUDO_END -#define PSEUDO_END(name) \ - END (name) - -/* Local labels stripped out by the linker. */ -#undef L -#define L(x) .L##x - -/* Label in text section. */ -#define C_TEXT(name) name - -#endif /* __ASSEMBLER__ */ - #endif /* linux/powerpc/sysdep.h */ |