mirror of
https://codeberg.org/ziglang/zig.git
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1311e997d4
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
68 lines
No EOL
2.2 KiB
C
Vendored
68 lines
No EOL
2.2 KiB
C
Vendored
/* $OpenBSD: profile.h,v 1.2 2021/02/17 12:11:45 kettenis Exp $ */
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/*
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* Copyright (c) 2015 Dale Rahn <drahn@dalerahn.com>
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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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#define _MCOUNT_DECL void _mcount
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#define MCOUNT_ASM_NAME "__mcount"
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#ifdef __PIC__
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#define PLTSYM "" /* XXX -aarch64 defaults to PLT? */
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#else
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#define PLTSYM ""
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#endif
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#define MCOUNT \
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__asm__ (".text;" \
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".align 3;" \
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".globl " MCOUNT_ASM_NAME ";" \
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".type " MCOUNT_ASM_NAME ",@function;" \
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MCOUNT_ASM_NAME ":;" \
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" stp x0, x1, [sp, #-160]!;" \
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" stp x2, x3, [sp, #16];" \
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" stp x4, x5, [sp, #32];" \
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" stp x6, x7, [sp, #48];" \
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" stp x8, x9, [sp, #64];" \
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" stp x10,x11,[sp, #80];" \
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" stp x12,x13,[sp, #96];" \
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" stp x14,x15,[sp, #112];" \
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" stp x16,x17,[sp, #128];" \
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" stp x29,lr, [sp, #144];" \
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/* load from pc at 8 off frame pointer */ \
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" ldr x0, [x29, #8];" \
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" mov x1, lr;" \
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" bl " __STRING(_mcount) PLTSYM ";" \
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/* restore argument registers */ \
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" ldp x2, x3, [sp, #16];" \
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" ldp x4, x5, [sp, #32];" \
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" ldp x6, x7, [sp, #48];" \
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" ldp x8, x9, [sp, #64];" \
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" ldp x10,x11,[sp, #80];" \
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" ldp x12,x13,[sp, #96];" \
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" ldp x14,x15,[sp, #112];" \
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" ldp x16,x17,[sp, #128];" \
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" ldp x29,lr, [sp, #144];" \
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" ldp x0, x1, [sp], #160;" \
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" ret;");
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#ifdef _KERNEL
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// Change this to dair read/set, then restore.
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#define MCOUNT_ENTER \
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__asm__ ("mrs %x0, daif; msr daifset, #0x3": "=r"(s));
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#define MCOUNT_EXIT \
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__asm__ ("msr daif, %x0":: "r"(s));
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#endif // _KERNEL
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