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Improve upon the new pledge command

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This commit is contained in:
Justine Tunney 2022-07-14 04:32:33 -07:00
parent b707fca77a
commit 1d744ea11b
13 changed files with 382 additions and 64 deletions
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17
libc/runtime/stack.h
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@ -48,6 +48,23 @@
#define STATIC_STACK_ADDR(ADDR) \
STATIC_SYMBOL("ape_stack_vaddr", _STACK_STRINGIFY(ADDR))
/**
* Makes program stack executable if declared, e.g.
*
* STATIC_EXEC_STACK();
* int main() {
* char code[16] = {
* 0x55, // push %rbp
* 0xb8, 0007, 0x00, 0x00, 0x00, // mov $7,%eax
* 0x5d, // push %rbp
* 0xc3, // ret
* };
* int (*func)(void) = (void *)code;
* printf("result %d should be 7\n", func());
* }
*/
#define STATIC_EXEC_STACK() STATIC_SYMBOL("ape_stack_pf", "7")
#define _STACK_STRINGIFY(ADDR) #ADDR
#if IsAsan()