mirror of
https://github.com/jart/cosmopolitan.git
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39bf41f4eb
- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
82 lines
3.9 KiB
C
82 lines
3.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 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/alg/bisectcarleft.internal.h"
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#include "libc/assert.h"
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#include "libc/bits/weaken.h"
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#include "libc/calls/calls.h"
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#include "libc/fmt/fmt.h"
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#include "libc/fmt/itoa.h"
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#include "libc/log/backtrace.internal.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nexgen32e/gc.internal.h"
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#include "libc/nexgen32e/stackframe.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/symbols.internal.h"
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#include "libc/str/str.h"
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/**
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* Prints stack frames with symbols.
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*
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* PrintBacktraceUsingSymbols(STDOUT_FILENO, NULL, GetSymbolTable());
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*
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* @param f is output stream
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* @param bp is rbp which can be NULL to detect automatically
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* @param st is open symbol table for current executable
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* @return -1 w/ errno if error happened
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*/
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noinstrument noasan int PrintBacktraceUsingSymbols(int fd,
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const struct StackFrame *bp,
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struct SymbolTable *st) {
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size_t gi;
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intptr_t addr;
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int symbol, addend;
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struct Garbages *garbage;
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const struct StackFrame *frame;
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++ftrace;
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if (!bp) bp = __builtin_frame_address(0);
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garbage = weaken(__garbage);
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gi = garbage ? garbage->i : 0;
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for (frame = bp; frame; frame = frame->next) {
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addr = frame->addr;
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if (addr == weakaddr("__gc")) {
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do {
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--gi;
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} while ((addr = garbage->p[gi].ret) == weakaddr("__gc"));
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}
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/*
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* we subtract one to handle the case of noreturn functions with a
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* call instruction at the end, since %rip in such cases will point
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* to the start of the next function. generally %rip always points
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* to the byte after the instruction. one exception is in case like
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* __restore_rt where the kernel creates a stack frame that points
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* to the beginning of the function.
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*/
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if ((symbol = GetSymbol(st, addr - 1)) != -1 ||
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(symbol = GetSymbol(st, addr - 0)) != -1) {
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addend = addr - st->addr_base;
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addend -= st->symbols[symbol].x;
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} else {
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addend = 0;
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}
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__printf("%p %p %s%+d\r\n", frame, addr, GetSymbolName(st, symbol), addend);
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}
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--ftrace;
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return 0;
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}
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