mirror of
https://github.com/jart/cosmopolitan.git
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9208c83f7a
- add vdso dump utility - tests now log stack usage - rename g_ftrace to __ftrace - make internal spinlocks go faster - add conformant c11 atomics library - function tracing now logs stack usage - make function call tracing thread safe - add -X unsecure (no ssl) mode to redbean - munmap() has more consistent behavior now - pacify fsync() calls on python unit tests - make --strace flag work better in redbean - start minimizing and documenting compiler flags
69 lines
2.6 KiB
ArmAsm
69 lines
2.6 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 2021 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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.privileged
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ftrace_hook:
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cmp $0,__ftrace(%rip)
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jg 1f
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ret
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1: push %rbp
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mov %rsp,%rbp
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and $-16,%rsp
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sub $0x80,%rsp
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movaps %xmm0,0x00(%rsp)
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movaps %xmm1,0x10(%rsp)
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movaps %xmm2,0x20(%rsp)
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movaps %xmm3,0x30(%rsp)
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movaps %xmm4,0x40(%rsp)
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movaps %xmm5,0x50(%rsp)
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movaps %xmm6,0x60(%rsp)
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movaps %xmm7,0x70(%rsp)
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push %rax
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push %rax
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push %rdi
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push %rsi
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push %rdx
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push %rcx
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push %r8
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push %r9
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push %r10
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push %r11
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call ftracer
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pop %r11
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pop %r10
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pop %r9
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pop %r8
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pop %rcx
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pop %rdx
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pop %rsi
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pop %rdi
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pop %rax
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pop %rax
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movaps 0x00(%rsp),%xmm0
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movaps 0x10(%rsp),%xmm1
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movaps 0x20(%rsp),%xmm2
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movaps 0x30(%rsp),%xmm3
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movaps 0x40(%rsp),%xmm4
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movaps 0x50(%rsp),%xmm5
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movaps 0x60(%rsp),%xmm6
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movaps 0x70(%rsp),%xmm7
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leave
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ret
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.endfn ftrace_hook,globl
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