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Mint APE Loader v1.5

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This change ports APE Loader to Linux AARCH64, so that Raspberry Pi
users can run programs like redbean, without the executable needing
to modify itself. Progress has also slipped into this change on the
issue of making progress better conforming to user expectations and
industry standards regarding which symbols we're allowed to declare
This commit is contained in:
Justine Tunney 2023-07-26 13:54:49 -07:00
parent 6843150e0c
commit 7e0a09feec
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GPG key ID: BE714B4575D6E328
510 changed files with 1783 additions and 1483 deletions
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19
libc/intrin/asan.c
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@ -52,7 +52,7 @@
#include "third_party/dlmalloc/dlmalloc.h"
#ifdef __x86_64__
STATIC_YOINK("_init_asan");
__static_yoink("_init_asan");
#if IsModeDbg()
// MODE=dbg
@ -342,7 +342,7 @@ static char *__asan_hexcpy(char *p, uint64_t x, uint8_t k) {
static void __asan_exit(void) {
kprintf("your asan runtime needs\n"
"\tSTATIC_YOINK(\"__die\");\n"
"\t__static_yoink(\"__die\");\n"
"in order to show you backtraces\n");
_Exitr(99);
}
@ -457,7 +457,7 @@ static struct AsanFault __asan_checka(const signed char *s, long ndiv8) {
* This is normally abstracted by the compiler. In some cases, it may be
* desirable to perform an ASAN memory safety check explicitly, e.g. for
* system call wrappers that need to vet memory passed to the kernel, or
* string library routines that use the `noasan` keyword due to compiler
* string library routines that use the `dontasan` keyword due to compiler
* generated ASAN being too costly. This function is fast especially for
* large memory ranges since this takes a few picoseconds for each byte.
*
@ -766,11 +766,11 @@ static void __asan_report_memory_origin_image(intptr_t a, int z) {
kprintf("\tunknown please supply .com.dbg symbols or set COMDBG\n");
}
} else {
kprintf("\tunknown please STATIC_YOINK(\"GetSymbolTable\");\n");
kprintf("\tunknown please __static_yoink(\"GetSymbolTable\");\n");
}
}
static noasan void __asan_onmemory(void *x, void *y, size_t n, void *a) {
static dontasan void __asan_onmemory(void *x, void *y, size_t n, void *a) {
const unsigned char *p = x;
struct ReportOriginHeap *t = a;
if ((p <= t->a && t->a < p + n) ||
@ -790,7 +790,7 @@ static void __asan_report_memory_origin_heap(const unsigned char *a, int z) {
t.z = z;
_weaken(malloc_inspect_all)(__asan_onmemory, &t);
} else {
kprintf("\tunknown please STATIC_YOINK(\"malloc_inspect_all\");\n");
kprintf("\tunknown please __static_yoink(\"malloc_inspect_all\");\n");
}
}
@ -1117,7 +1117,7 @@ int __asan_print_trace(void *p) {
kprintf("\n%*lx %s", 12, e->bt.p[i],
_weaken(GetSymbolByAddr)
? _weaken(GetSymbolByAddr)(e->bt.p[i])
: "please STATIC_YOINK(\"GetSymbolByAddr\")");
: "please __static_yoink(\"GetSymbolByAddr\")");
}
return 0;
}
@ -1482,7 +1482,8 @@ static textstartup void __asan_shadow_mapping(struct MemoryIntervals *m,
static textstartup void __asan_shadow_existing_mappings(void) {
__asan_shadow_mapping(&_mmi, 0);
__asan_map_shadow(GetStackAddr(), GetStackSize());
__asan_poison((void *)GetStackAddr(), APE_GUARDSIZE, kAsanStackOverflow);
__asan_poison((void *)GetStackAddr(), getauxval(AT_PAGESZ),
kAsanStackOverflow);
}
forceinline ssize_t __write_str(const char *s) {
@ -1509,7 +1510,7 @@ void __asan_init(int argc, char **argv, char **envp, intptr_t *auxv) {
__asan_shadow_existing_mappings();
__asan_map_shadow((uintptr_t)__executable_start, _end - __executable_start);
__asan_map_shadow(0, 4096);
__asan_poison(0, APE_GUARDSIZE, kAsanNullPage);
__asan_poison(0, getauxval(AT_PAGESZ), kAsanNullPage);
if (!IsWindows()) {
sys_mprotect((void *)0x7fff8000, 0x10000, PROT_READ);
}