54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#include <elfutils/libdwfl.h>
|
||
|
|
#include "../../../util/unwind-libdw.h"
|
||
|
|
#include "../../../util/perf_regs.h"
|
||
|
|
#include "util/sample.h"
|
||
|
|
|
||
|
|
bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
|
||
|
|
{
|
||
|
|
struct unwind_info *ui = arg;
|
||
|
|
struct regs_dump *user_regs = &ui->sample->user_regs;
|
||
|
|
Dwarf_Word dwarf_regs[17];
|
||
|
|
unsigned nregs;
|
||
|
|
|
||
|
|
#define REG(r) ({ \
|
||
|
|
Dwarf_Word val = 0; \
|
||
|
|
perf_reg_value(&val, user_regs, PERF_REG_X86_##r); \
|
||
|
|
val; \
|
||
|
|
})
|
||
|
|
|
||
|
|
if (user_regs->abi == PERF_SAMPLE_REGS_ABI_32) {
|
||
|
|
dwarf_regs[0] = REG(AX);
|
||
|
|
dwarf_regs[1] = REG(CX);
|
||
|
|
dwarf_regs[2] = REG(DX);
|
||
|
|
dwarf_regs[3] = REG(BX);
|
||
|
|
dwarf_regs[4] = REG(SP);
|
||
|
|
dwarf_regs[5] = REG(BP);
|
||
|
|
dwarf_regs[6] = REG(SI);
|
||
|
|
dwarf_regs[7] = REG(DI);
|
||
|
|
dwarf_regs[8] = REG(IP);
|
||
|
|
nregs = 9;
|
||
|
|
} else {
|
||
|
|
dwarf_regs[0] = REG(AX);
|
||
|
|
dwarf_regs[1] = REG(DX);
|
||
|
|
dwarf_regs[2] = REG(CX);
|
||
|
|
dwarf_regs[3] = REG(BX);
|
||
|
|
dwarf_regs[4] = REG(SI);
|
||
|
|
dwarf_regs[5] = REG(DI);
|
||
|
|
dwarf_regs[6] = REG(BP);
|
||
|
|
dwarf_regs[7] = REG(SP);
|
||
|
|
dwarf_regs[8] = REG(R8);
|
||
|
|
dwarf_regs[9] = REG(R9);
|
||
|
|
dwarf_regs[10] = REG(R10);
|
||
|
|
dwarf_regs[11] = REG(R11);
|
||
|
|
dwarf_regs[12] = REG(R12);
|
||
|
|
dwarf_regs[13] = REG(R13);
|
||
|
|
dwarf_regs[14] = REG(R14);
|
||
|
|
dwarf_regs[15] = REG(R15);
|
||
|
|
dwarf_regs[16] = REG(IP);
|
||
|
|
nregs = 17;
|
||
|
|
}
|
||
|
|
|
||
|
|
return dwfl_thread_state_registers(thread, 0, nregs, dwarf_regs);
|
||
|
|
}
|