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Add support for symbol table in .com files

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This change fixes minor bugs and adds a feature, which lets us store the
ELF symbol table, inside the ZIP directory. We use the path /zip/.symtab
which can be safely removed using a zip editing tool, to make the binary
smaller after compilation. This supplements the existing method of using
a separate .com.dbg file, which is still supported. The intent is people
don't always know that it's a good idea to download the debug file. It's
not great having someone's first experience be a crash report, that only
has numbers rather than symbols. This will help fix that!
This commit is contained in:
Justine Tunney 2022-03-23 06:31:55 -07:00
parent 393ca4be40
commit 23b72eb617
61 changed files with 963 additions and 510 deletions
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8
libc/intrin/asan.c
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@ -40,6 +40,7 @@
#include "libc/nt/enum/version.h"
#include "libc/nt/runtime.h"
#include "libc/runtime/directmap.internal.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/memtrack.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.internal.h"
@ -321,6 +322,7 @@ static void __asan_exit(void) {
kprintf("your asan runtime needs%n"
"\tSTATIC_YOINK(\"__die\");%n"
"in order to show you backtraces%n");
__restorewintty();
_Exit(99);
}
@ -1366,6 +1368,7 @@ textstartup void __asan_init(int argc, char **argv, char **envp,
if (!cmpxchg(&once, false, true)) return;
if (IsWindows() && NtGetVersion() < kNtVersionWindows10) {
__write_str("error: asan binaries require windows10\r\n");
__restorewintty();
_Exit(0); /* So `make MODE=dbg test` passes w/ Windows7 */
}
REQUIRE(_mmi);
@ -1389,6 +1392,11 @@ textstartup void __asan_init(int argc, char **argv, char **envp,
__asan_shadow_string_list(envp);
__asan_shadow_auxv(auxv);
__asan_install_malloc_hooks();
STRACE(" _ ____ _ _ _ ");
STRACE(" / \\ / ___| / \\ | \\ | |");
STRACE(" / _ \\ \\___ \\ / _ \\ | \\| |");
STRACE(" / ___ \\ ___) / ___ \\| |\\ |");
STRACE("/_/ \\_\\____/_/ \\_\\_| \\_|");
STRACE("cosmopolitan memory safety module initialized");
}