mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-04-29 12:08:48 +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.
129 lines
3.9 KiB
C
Vendored
129 lines
3.9 KiB
C
Vendored
/* $OpenBSD: asm.h,v 1.8 2022/12/06 00:08:38 jca Exp $ */
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/*
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* Copyright (c) 2020 Brian Bamsch <bbamsch@google.com>
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)asm.h 5.5 (Berkeley) 5/7/91
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*/
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#ifndef _MACHINE_ASM_H_
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#define _MACHINE_ASM_H_
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#define _C_LABEL(x) x
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#define _ASM_LABEL(x) x
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#ifdef __STDC__
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# define __CONCAT(x,y) x ## y
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# define __STRING(x) #x
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#else
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# define __CONCAT(x,y) x/**/y
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# define __STRING(x) "x"
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#endif
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#ifndef _ALIGN_TEXT
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# define _ALIGN_TEXT .align 0
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#endif
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/* NB == No Binding: use .globl or .weak as necessary */
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#define _ENTRY_NB(x) \
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.text; .p2align 1; .type x,@function; x:
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#define _ENTRY(x) .globl x; _ENTRY_NB(x)
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#if defined(PROF) || defined(GPROF)
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// XXX Profiler Support
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#define _PROF_PROLOGUE \
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addi sp, sp, -16; \
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sd ra, 8(sp); \
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sd fp, 0(sp); \
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mv fp, sp; \
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call __mcount; \
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ld ra, 8(sp); \
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ld fp, 0(sp); \
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add sp, sp, 16;
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#else
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#define _PROF_PROLOGUE
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#endif
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#if defined(_RET_PROTECTOR)
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// XXX Retguard Support
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#error RETGUARD not yet supported for riscv64
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#else
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#define RETGUARD_CALC_COOKIE(reg)
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#define RETGUARD_LOAD_RANDOM(x, reg)
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#define RETGUARD_SETUP(x, reg)
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#define RETGUARD_CHECK(x, reg)
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#define RETGUARD_PUSH(reg)
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#define RETGUARD_POP(reg)
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#define RETGUARD_SYMBOL(x)
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#endif
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#define ENTRY(y) _ENTRY(y); _PROF_PROLOGUE
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#define ENTRY_NP(y) _ENTRY(y)
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#define ENTRY_NB(y) _ENTRY_NB(y); _PROF_PROLOGUE
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#define ASENTRY(y) _ENTRY(y); _PROF_PROLOGUE
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#define ASENTRY_NP(y) _ENTRY(y)
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#define END(y) .size y, . - y
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#define EENTRY(sym) .globl sym; sym:
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#define EEND(sym)
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#ifdef __PIC__
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#define PIC_SYM(x,y) x(y)
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#else
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#define PIC_SYM(x,y) x
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#endif
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#define STRONG_ALIAS(alias,sym) \
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.global alias; \
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alias = sym
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#define WEAK_ALIAS(alias,sym) \
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.weak alias; \
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alias = sym
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#define SWAP_FAULT_HANDLER(handler, tmp0, tmp1) \
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ld tmp0, CI_CURPCB(tp); /* Load the pcb */ \
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ld tmp1, PCB_ONFAULT(tmp0); /* Save old handler */ \
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sd handler, PCB_ONFAULT(tmp0); /* Set the handler */ \
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mv handler, tmp1
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#define SET_FAULT_HANDLER(handler, pcb) \
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ld pcb, CI_CURPCB(tp); /* Load the pcb */ \
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sd handler, PCB_ONFAULT(pcb) /* Set the handler */
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#define ENTER_USER_ACCESS(tmp) \
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li tmp, SSTATUS_SUM; \
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csrs sstatus, tmp
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#define EXIT_USER_ACCESS(tmp) \
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li tmp, SSTATUS_SUM; \
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csrc sstatus, tmp
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#endif /* _MACHINE_ASM_H_ */ |