tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#include <elfutils/libdwfl.h>
2#include "../../util/unwind-libdw.h"
3#include "../../util/perf_regs.h"
4#include "../../util/event.h"
5
6bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
7{
8 struct unwind_info *ui = arg;
9 struct regs_dump *user_regs = &ui->sample->user_regs;
10 Dwarf_Word dwarf_regs[PERF_REG_ARM_MAX];
11
12#define REG(r) ({ \
13 Dwarf_Word val = 0; \
14 perf_reg_value(&val, user_regs, PERF_REG_ARM_##r); \
15 val; \
16})
17
18 dwarf_regs[0] = REG(R0);
19 dwarf_regs[1] = REG(R1);
20 dwarf_regs[2] = REG(R2);
21 dwarf_regs[3] = REG(R3);
22 dwarf_regs[4] = REG(R4);
23 dwarf_regs[5] = REG(R5);
24 dwarf_regs[6] = REG(R6);
25 dwarf_regs[7] = REG(R7);
26 dwarf_regs[8] = REG(R8);
27 dwarf_regs[9] = REG(R9);
28 dwarf_regs[10] = REG(R10);
29 dwarf_regs[11] = REG(FP);
30 dwarf_regs[12] = REG(IP);
31 dwarf_regs[13] = REG(SP);
32 dwarf_regs[14] = REG(LR);
33 dwarf_regs[15] = REG(PC);
34
35 return dwfl_thread_state_registers(thread, 0, PERF_REG_ARM_MAX,
36 dwarf_regs);
37}