mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
97b7116953
After going through the MODE=dbg and MODE=zero build modes, a bunch of little issues were identified, which have been addressed. Fixing those issues created even more troubles for the project, because it improved our ability to detect latent problems which are getting fixed so fast.
130 lines
4.5 KiB
PHP
130 lines
4.5 KiB
PHP
/*-*- 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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// @fileoverview textual include for loading processor state
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#ifdef __x86_64__
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mov %r8,40(%rdi)
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mov %r9,48(%rdi)
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mov %r10,56(%rdi)
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mov %r11,64(%rdi)
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mov %r12,72(%rdi)
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mov %r13,80(%rdi)
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mov %r14,88(%rdi)
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mov %r15,96(%rdi)
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mov %rdi,104(%rdi)
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mov %rsi,112(%rdi)
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mov %rbp,120(%rdi)
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mov %rbx,128(%rdi)
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mov %rdx,136(%rdi)
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mov %rcx,152(%rdi)
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lea 8(%rsp),%rax
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mov %rax,160(%rdi) // rsp = caller's rsp
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mov (%rsp),%rax
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mov %rax,168(%rdi) // rip = return address
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lea 608(%rdi),%rax
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movaps %xmm0,-0x80(%rax)
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movaps %xmm1,-0x70(%rax)
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movaps %xmm2,-0x60(%rax)
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movaps %xmm3,-0x50(%rax)
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movaps %xmm4,-0x40(%rax)
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movaps %xmm5,-0x30(%rax)
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movaps %xmm6,-0x20(%rax)
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movaps %xmm7,-0x10(%rax)
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movaps %xmm8,0x00(%rax)
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movaps %xmm9,0x10(%rax)
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movaps %xmm10,0x20(%rax)
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movaps %xmm11,0x30(%rax)
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movaps %xmm12,0x40(%rax)
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movaps %xmm13,0x50(%rax)
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movaps %xmm14,0x60(%rax)
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movaps %xmm15,0x70(%rax)
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lea 320(%rdi),%rax // rax = &__fpustate
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mov %rax,224(%rdi) // fpregs = rax
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#elif defined(__aarch64__)
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#define REGS(i) 184+i*8
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// x14 and x15 are clobbered
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// all other registers are preserved
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stp xzr,x1,[x0,REGS(0)] // context.x0 = 0
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stp x2,x3,[x0,REGS(2)]
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stp x4,x5,[x0,REGS(4)]
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stp x6,x7,[x0,REGS(6)]
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stp x8,x9,[x0,REGS(8)]
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stp x10,x11,[x0,REGS(10)]
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stp x12,x13,[x0,REGS(12)]
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stp x14,x15,[x0,REGS(14)]
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stp x16,x17,[x0,REGS(16)]
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stp x18,x19,[x0,REGS(18)]
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stp x20,x21,[x0,REGS(20)]
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stp x22,x23,[x0,REGS(22)]
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stp x24,x25,[x0,REGS(24)]
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stp x26,x27,[x0,REGS(26)]
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stp x28,x29,[x0,REGS(28)]
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str x30,[x0,REGS(30)]
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mov x15,sp
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stp x15,x30,[x0,REGS(31)] // sp, pc = caller sp, ret address
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str xzr,[x0,448] // pstate = 0
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str xzr,[x0,456] // no vectors yet
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/*void getfpsimd(ucontext_t *uc) {
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struct fpsimd_context *fp;
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fp = (struct fpsimd_context *)uc->uc_mcontext.__reserved;
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fp[0].head.magic = FPSIMD_MAGIC;
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fp[0].head.size = sizeof(*fp);
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fp[1].head.magic = 0;
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fp[1].head.size = 0;
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asm("mrs\t%0,fpsr" : "=r"(fp->fpsr));
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asm("mrs\t%0,fpcr" : "=r"(fp->fpcr));
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asm("stp\tq0,q1,%0" : "=m"(fp->vregs[0]));
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asm("stp\tq2,q3,%0" : "=m"(fp->vregs[2]));
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asm("stp\tq4,q5,%0" : "=m"(fp->vregs[4]));
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asm("stp\tq6,q7,%0" : "=m"(fp->vregs[6]));
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asm("stp\tq8,q9,%0" : "=m"(fp->vregs[8]));
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asm("stp\tq10,q11,%0" : "=m"(fp->vregs[10]));
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asm("stp\tq12,q13,%0" : "=m"(fp->vregs[12]));
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asm("stp\tq14,q15,%0" : "=m"(fp->vregs[14]));
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}*/
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add x15,x0,464
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mov x14,0x8001
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movk x14,0x4650,lsl 16
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str xzr,[x0,992]
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movk x14,0x210,lsl 32
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str x14,[x0,464]
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mrs x14,fpsr
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str w14,[x15,8]
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mrs x14,fpcr
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str w14,[x15,12]
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stp q0,q1,[x15,16]
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stp q2,q3,[x15,48]
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stp q4,q5,[x15,80]
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stp q6,q7,[x15,112]
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stp q8,q9,[x15,144]
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stp q10,q11,[x15,176]
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stp q12,q13,[x15,208]
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stp q14,q15,[x15,240]
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#else
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#error "unsupported architecture"
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#endif
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