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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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15
libc/intrin/ubsan.c
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@ -20,6 +20,7 @@
#include "libc/bits/pushpop.h"
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/calls/strace.internal.h"
#include "libc/fmt/fmt.h"
#include "libc/intrin/kprintf.h"
#include "libc/log/color.internal.h"
@ -199,6 +200,7 @@ static void __ubsan_exit(void) {
kprintf("your ubsan runtime needs%n"
"\tSTATIC_YOINK(\"__die\");%n"
"in order to show you backtraces%n");
__restorewintty();
_Exit(99);
}
@ -594,3 +596,16 @@ void __ubsan_on_report(void) {
void *__ubsan_get_current_report_data(void) {
return 0;
}
static textstartup void ubsan_init() {
STRACE(" _ _ ____ ____ _ _ _");
STRACE("| | | | __ ) ___| / \\ | \\ | |");
STRACE("| | | | _ \\___ \\ / _ \\ | \\| |");
STRACE("| |_| | |_) |__) / ___ \\| |\\ |");
STRACE(" \\___/|____/____/_/ \\_\\_| \\_|");
STRACE("cosmopolitan behavior module initialized");
}
const void *const ubsan_ctor[] initarray = {
ubsan_init,
};