mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
9208c83f7a
- add vdso dump utility - tests now log stack usage - rename g_ftrace to __ftrace - make internal spinlocks go faster - add conformant c11 atomics library - function tracing now logs stack usage - make function call tracing thread safe - add -X unsecure (no ssl) mode to redbean - munmap() has more consistent behavior now - pacify fsync() calls on python unit tests - make --strace flag work better in redbean - start minimizing and documenting compiler flags
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_STACK_H_
|
|
#define COSMOPOLITAN_LIBC_RUNTIME_STACK_H_
|
|
#include "ape/config.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/nt/version.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#if !(__ASSEMBLER__ + __LINKER__ + 0)
|
|
|
|
/**
|
|
* Tunes APE stack maximum size.
|
|
*
|
|
* This defaults to `STACKSIZE`. The bottom-most page will be protected
|
|
* to ensure your stack does not magically grow beyond this value. It's
|
|
* possible to detect stack overflows, by calling `ShowCrashReports()`.
|
|
*
|
|
* If you want to know how much stack your programs needs, then
|
|
*
|
|
* STATIC_YOINK("stack_usage_logging");
|
|
*
|
|
* will install an atexit() handler that appends to `o/$MODE/stack.log`
|
|
*
|
|
* @see libc/sysv/systemfive.S
|
|
* @see ape/ape.lds
|
|
*/
|
|
#define STATIC_STACK_SIZE(BYTES) \
|
|
STATIC_SYMBOL("ape_stack_memsz", _STACK_STRINGIFY(BYTES) _STACK_EXTRA)
|
|
|
|
/**
|
|
* Tunes APE stack virtual address.
|
|
*
|
|
* This defaults to `0x7e0000000000 - STACKSIZE`. The value defined by
|
|
* this macro will be respected, with two exceptions: (1) in MODE=tiny
|
|
* the operating system provided stack is used instead and (2) Windows
|
|
* Seven doesn't support 64-bit addresses so 0x10000000 - GetStackSize
|
|
* is used instead.
|
|
*
|
|
* @see libc/sysv/systemfive.S
|
|
* @see libc/nt/winmain.greg.c
|
|
* @see ape/ape.lds
|
|
*/
|
|
#define STATIC_STACK_ADDR(ADDR) \
|
|
STATIC_SYMBOL("ape_stack_vaddr", _STACK_STRINGIFY(ADDR))
|
|
|
|
#define _STACK_STRINGIFY(ADDR) #ADDR
|
|
|
|
#if IsAsan()
|
|
#define _STACK_EXTRA "*2"
|
|
#else
|
|
#define _STACK_EXTRA ""
|
|
#endif
|
|
|
|
#if defined(__GNUC__) && defined(__ELF__) && !defined(__STRICT_ANSI__)
|
|
COSMOPOLITAN_C_START_
|
|
|
|
extern char ape_stack_prot[] __attribute__((__weak__));
|
|
extern char ape_stack_memsz[] __attribute__((__weak__));
|
|
extern char ape_stack_align[] __attribute__((__weak__));
|
|
|
|
#define GetStackSize() ((uintptr_t)ape_stack_memsz)
|
|
|
|
/**
|
|
* Returns address of bottom of stack.
|
|
*/
|
|
#define GetStackAddr(ADDEND) \
|
|
((void *)((((intptr_t)__builtin_frame_address(0) - 1) & -GetStackSize()) + \
|
|
(ADDEND)))
|
|
|
|
/**
|
|
* Returns preferred bottom address of stack.
|
|
*/
|
|
#define GetStaticStackAddr(ADDEND) \
|
|
({ \
|
|
intptr_t vAddr; \
|
|
if (!IsWindows() || IsAtLeastWindows10()) { \
|
|
__asm__(".weak\tape_stack_vaddr\n\t" \
|
|
"movabs\t%1+ape_stack_vaddr,%0" \
|
|
: "=r"(vAddr) \
|
|
: "i"(ADDEND)); \
|
|
} else { \
|
|
vAddr = 0x10000000; \
|
|
} \
|
|
(void *)vAddr; \
|
|
})
|
|
|
|
COSMOPOLITAN_C_END_
|
|
#endif /* GNU ELF */
|
|
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
|
|
#endif /* COSMOPOLITAN_LIBC_RUNTIME_STACK_H_ */
|