mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-04-28 19:47:08 +03:00
Alex Rønne Petersen
66d97267c7
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
100 lines
3.0 KiB
C
Vendored
100 lines
3.0 KiB
C
Vendored
/* $OpenBSD: asm.h,v 1.7 2022/12/07 23:25:59 guenther Exp $ */
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/*
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* Copyright (c) 2020 Dale Rahn <drahn@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _POWERPC64_ASM_H_
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#define _POWERPC64_ASM_H_
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#define _C_LABEL(x) x
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#define _ASM_LABEL(x) x
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#define _TMP_LABEL(x) .L_ ## x
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#define _GEP_LABEL(x) .L_ ## x ## _gep0
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#define _LEP_LABEL(x) .L_ ## x ## _lep0
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#define _ENTRY(x) \
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.text; .align 2; .globl x; .type x,@function; x: \
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_GEP_LABEL(x): \
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addis %r2, %r12, .TOC.-_GEP_LABEL(x)@ha; \
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addi %r2, %r2, .TOC.-_GEP_LABEL(x)@l; \
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_LEP_LABEL(x): \
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.localentry x, _LEP_LABEL(x)-_GEP_LABEL(x);
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#if defined(PROF) || defined(GPROF)
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# define _PROF_PROLOGUE(y) \
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.section ".data"; \
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.align 2; \
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_TMP_LABEL(y):; \
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.long 0; \
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.section ".text"; \
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mflr %r0; \
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addis %r11, %r2, _TMP_LABEL(y)@toc@ha; \
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std %r0, 8(%r1); \
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addi %r0, %r11, _TMP_LABEL(y)@toc@l; \
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bl _mcount;
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#else
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# define _PROF_PROLOGUE(y)
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#endif
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#define ENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y)
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#define ASENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y)
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#define END(y) .size y, . - y
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#define STRONG_ALIAS(alias,sym) \
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.global alias; .set alias,sym
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#define WEAK_ALIAS(alias,sym) \
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.weak alias; .set alias,sym
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#if defined(_RET_PROTECTOR)
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# define RETGUARD_SETUP(x, reg) \
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RETGUARD_SYMBOL(x); \
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mflr %r0; \
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addis reg, %r2, (__retguard_ ## x)@toc@ha; \
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ld reg, ((__retguard_ ## x)@toc@l)(reg); \
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xor reg, reg, %r0
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# define RETGUARD_CHECK(x, reg) \
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mflr %r0; \
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xor reg, reg, %r0; \
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addis %r12, %r2, (__retguard_ ## x)@toc@ha; \
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ld %r12, ((__retguard_ ## x)@toc@l)(%r12); \
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tdne reg, %r12
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# define RETGUARD_SAVE(reg, loc) \
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std reg, loc
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# define RETGUARD_LOAD(reg, loc) \
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ld reg, loc
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# define RETGUARD_SYMBOL(x) \
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.ifndef __retguard_ ## x; \
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.hidden __retguard_ ## x; \
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.type __retguard_ ## x,@object; \
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.pushsection .openbsd.randomdata.retguard,"aw",@progbits; \
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.weak __retguard_ ## x; \
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.p2align 3; \
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__retguard_ ## x: ; \
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.quad 0; \
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.size __retguard_ ## x, 8; \
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.popsection; \
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.endif
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#else
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# define RETGUARD_SETUP(x, reg)
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# define RETGUARD_CHECK(x, reg)
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# define RETGUARD_SAVE(reg, loc)
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# define RETGUARD_LOAD(reg, loc)
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# define RETGUARD_SYMBOL(x)
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#endif
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#endif /* !_POWERPC64_ASM_H_ */ |