mirror of
https://github.com/python/cpython.git
synced 2026-05-04 09:31:02 +00:00
68 lines
2 KiB
C
68 lines
2 KiB
C
#ifndef Py_INTERNAL_JIT_UNWIND_H
|
|
#define Py_INTERNAL_JIT_UNWIND_H
|
|
|
|
#ifndef Py_BUILD_CORE
|
|
# error "this header requires Py_BUILD_CORE define"
|
|
#endif
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#if defined(_Py_JIT) && defined(__linux__) && defined(__ELF__)
|
|
# define PY_HAVE_JIT_GDB_UNWIND
|
|
#endif
|
|
|
|
#if defined(PY_HAVE_PERF_TRAMPOLINE) || defined(PY_HAVE_JIT_GDB_UNWIND)
|
|
|
|
#if defined(PY_HAVE_JIT_GDB_UNWIND)
|
|
extern PyMutex _Py_jit_debug_mutex;
|
|
#endif
|
|
|
|
/* DWARF exception-handling pointer encodings shared by JIT unwind users. */
|
|
enum {
|
|
DWRF_EH_PE_absptr = 0x00,
|
|
DWRF_EH_PE_omit = 0xff,
|
|
|
|
/* Data type encodings */
|
|
DWRF_EH_PE_uleb128 = 0x01,
|
|
DWRF_EH_PE_udata2 = 0x02,
|
|
DWRF_EH_PE_udata4 = 0x03,
|
|
DWRF_EH_PE_udata8 = 0x04,
|
|
DWRF_EH_PE_sleb128 = 0x09,
|
|
DWRF_EH_PE_sdata2 = 0x0a,
|
|
DWRF_EH_PE_sdata4 = 0x0b,
|
|
DWRF_EH_PE_sdata8 = 0x0c,
|
|
DWRF_EH_PE_signed = 0x08,
|
|
|
|
/* Reference type encodings */
|
|
DWRF_EH_PE_pcrel = 0x10,
|
|
DWRF_EH_PE_textrel = 0x20,
|
|
DWRF_EH_PE_datarel = 0x30,
|
|
DWRF_EH_PE_funcrel = 0x40,
|
|
DWRF_EH_PE_aligned = 0x50,
|
|
DWRF_EH_PE_indirect = 0x80
|
|
};
|
|
|
|
/* Return the size of the generated .eh_frame data for the given encoding. */
|
|
size_t _PyJitUnwind_EhFrameSize(int absolute_addr);
|
|
|
|
/*
|
|
* Build DWARF .eh_frame data for JIT code; returns size written or 0 on error.
|
|
* absolute_addr selects the FDE address encoding:
|
|
* - 0: PC-relative offsets (perf jitdump synthesized DSO).
|
|
* - nonzero: absolute addresses (GDB JIT in-memory ELF).
|
|
*/
|
|
size_t _PyJitUnwind_BuildEhFrame(uint8_t *buffer, size_t buffer_size,
|
|
const void *code_addr, size_t code_size,
|
|
int absolute_addr);
|
|
|
|
void *_PyJitUnwind_GdbRegisterCode(const void *code_addr,
|
|
size_t code_size,
|
|
const char *entry,
|
|
const char *filename);
|
|
|
|
void _PyJitUnwind_GdbUnregisterCode(void *handle);
|
|
|
|
#endif // defined(PY_HAVE_PERF_TRAMPOLINE) || defined(PY_HAVE_JIT_GDB_UNWIND)
|
|
|
|
#endif // Py_INTERNAL_JIT_UNWIND_H
|