mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
23e235b7a5
This change integrates e58abc1110b335a3341e8ad5821ad8e3880d9bb2 from https://github.com/ahgamut/musl-cross-make/ which fixes the issues we were having with our C language extension for symbolic constants. This change also performs some code cleanup and bug fixes to getaddrinfo(). It's now possible to compile projects like ncurses, readline and python without needing to patch anything upstream, except maybe a line or two. Pretty soon it should be possible to build a Linux distro on Cosmo.
110 lines
5.8 KiB
ArmAsm
110 lines
5.8 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above 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 │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.internal.h"
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// Sets machine state.
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//
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// @see getcontext()
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setcontext:
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mov 224(%rdi),%rax
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test %rax,%rax
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je 1f
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movaps 160(%rax),%xmm0
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movaps 176(%rax),%xmm1
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movaps 192(%rax),%xmm2
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movaps 208(%rax),%xmm3
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movaps 224(%rax),%xmm4
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movaps 240(%rax),%xmm5
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movaps 256(%rax),%xmm6
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movaps 272(%rax),%xmm7
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movaps 288(%rax),%xmm8
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movaps 304(%rax),%xmm9
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movaps 320(%rax),%xmm10
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movaps 336(%rax),%xmm11
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movaps 352(%rax),%xmm12
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movaps 368(%rax),%xmm13
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movaps 384(%rax),%xmm14
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movaps 400(%rax),%xmm15
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1: push 176(%rdi)
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popf
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mov 40(%rdi),%r8
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mov 48(%rdi),%r9
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mov 56(%rdi),%r10
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mov 64(%rdi),%r11
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mov 72(%rdi),%r12
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mov 80(%rdi),%r13
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mov 88(%rdi),%r14
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mov 96(%rdi),%r15
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mov 112(%rdi),%rsi
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mov 120(%rdi),%rbp
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mov 128(%rdi),%rbx
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mov 136(%rdi),%rdx
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mov 144(%rdi),%rax
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mov 152(%rdi),%rcx
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mov 160(%rdi),%rsp
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xor %rax,%rax
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push 168(%rdi)
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mov 104(%rdi),%rdi
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ret
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.endfn setcontext,globl
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.end
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////////////////////////////////////////////////////////////////////////////////
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noasan noubsan int setcontext(const ucontext_t *uc) {
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if (uc->uc_mcontext.fpregs) {
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asm volatile("movaps\t%0,%%xmm0" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[0]));
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asm volatile("movaps\t%0,%%xmm1" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[1]));
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asm volatile("movaps\t%0,%%xmm2" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[2]));
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asm volatile("movaps\t%0,%%xmm3" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[3]));
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asm volatile("movaps\t%0,%%xmm4" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[4]));
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asm volatile("movaps\t%0,%%xmm5" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[5]));
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asm volatile("movaps\t%0,%%xmm6" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[6]));
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asm volatile("movaps\t%0,%%xmm7" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[7]));
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asm volatile("movaps\t%0,%%xmm8" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[8]));
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asm volatile("movaps\t%0,%%xmm9" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[9]));
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asm volatile("movaps\t%0,%%xmm10" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[10]));
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asm volatile("movaps\t%0,%%xmm11" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[11]));
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asm volatile("movaps\t%0,%%xmm12" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[12]));
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asm volatile("movaps\t%0,%%xmm13" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[13]));
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asm volatile("movaps\t%0,%%xmm14" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[14]));
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asm volatile("movaps\t%0,%%xmm15" : /* no outputs */ : "m"(uc->uc_mcontext.fpregs->xmm[15]));
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}
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asm volatile("mov\t%0,%%r8" : /* no outputs */ : "m"(uc->uc_mcontext.r8));
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asm volatile("mov\t%0,%%r9" : /* no outputs */ : "m"(uc->uc_mcontext.r9));
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asm volatile("mov\t%0,%%r10" : /* no outputs */ : "m"(uc->uc_mcontext.r10));
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asm volatile("mov\t%0,%%r11" : /* no outputs */ : "m"(uc->uc_mcontext.r11));
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asm volatile("mov\t%0,%%r12" : /* no outputs */ : "m"(uc->uc_mcontext.r12));
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asm volatile("mov\t%0,%%r13" : /* no outputs */ : "m"(uc->uc_mcontext.r13));
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asm volatile("mov\t%0,%%r14" : /* no outputs */ : "m"(uc->uc_mcontext.r14));
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asm volatile("mov\t%0,%%r15" : /* no outputs */ : "m"(uc->uc_mcontext.r15));
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asm volatile("mov\t%0,%%rsi" : /* no outputs */ : "m"(uc->uc_mcontext.rsi));
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asm volatile("mov\t%0,%%rbp" : /* no outputs */ : "m"(uc->uc_mcontext.rbp));
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asm volatile("mov\t%0,%%rbx" : /* no outputs */ : "m"(uc->uc_mcontext.rbx));
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asm volatile("mov\t%0,%%rdx" : /* no outputs */ : "m"(uc->uc_mcontext.rdx));
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asm volatile("mov\t%0,%%rax" : /* no outputs */ : "m"(uc->uc_mcontext.rax));
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asm volatile("mov\t%0,%%rcx" : /* no outputs */ : "m"(uc->uc_mcontext.rcx));
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asm volatile("mov\t%0,%%rsp" : /* no outputs */ : "m"(uc->uc_mcontext.rsp));
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asm volatile("xor\t%%rax,%%rax\n\t"
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"push\t%0\n\t"
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"mov\t%1,%%rdi\n\t"
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"ret"
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: /* no outputs */
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: "m"(uc->uc_mcontext.rip), "m"(uc->uc_mcontext.rdi));
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__builtin_unreachable();
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}
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