This is the mail archive of the libc-hacker@sources.redhat.com mailing list for the glibc project.
Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
This change simply moves all of the powerpc asm syntax stuff from sysdeps/unix/sysv/linux/powerpc/sysdep.h to sysdeps/powerpc/sysdep.h, so it can be used by other powerpc ports (there is a hurd-powerpc port in the works). I don't have a powerpc machine or a powerpc cross-build environment, so I haven't tested that this truly doesn't break anything, but I can't see how it would change anything at all. Ok to check in? 2001-10-28 Roland McGrath <roland@frob.com> * sysdeps/unix/sysv/linux/powerpc/sysdep.h (ALIGNARG, ASM_TYPE_DIRECTIVE, ASM_SIZE_DIRECTIVE, CALL_MCOUNT, ENTRY, EALIGN, DO_CALL, JUMPTARGET, PSEUDO, PSEUDO_RET, PSEUDO_END, L, C_TEXT): Move all these assembly-related definitions to ... * sysdeps/powerpc/sysdep.h: ... here. Index: sysdeps/powerpc/sysdep.h =================================================================== RCS file: /cvs/glibc/libc/sysdeps/powerpc/sysdep.h,v retrieving revision 1.2 diff -u -r1.2 sysdep.h --- sysdeps/powerpc/sysdep.h 2001/07/06 04:56:01 1.2 +++ sysdeps/powerpc/sysdep.h 2001/10/28 22:29:59 @@ -1,4 +1,4 @@ -/* Copyright (C) 1999 Free Software Foundation, Inc. +/* 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 @@ -100,4 +100,118 @@ #define cr6 6 #define cr7 7 -#endif /* 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__ */ Index: sysdeps/unix/sysv/linux/powerpc/sysdep.h =================================================================== RCS file: /cvs/glibc/libc/sysdeps/unix/sysv/linux/powerpc/sysdep.h,v retrieving revision 1.12 diff -u -r1.12 sysdep.h --- sysdeps/unix/sysv/linux/powerpc/sysdep.h 2001/07/06 04:56:19 1.12 +++ sysdeps/unix/sysv/linux/powerpc/sysdep.h 2001/10/28 22:30:00 @@ -32,121 +32,4 @@ # 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 */
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |