1 #include <linux/kernel.h>
2 #include <elfutils/libdwfl.h>
3 #include "../../util/unwind-libdw.h"
4 #include "../../util/perf_regs.h"
5 #include "../../util/event.h"
6 #include "../../util/sample.h"
7 #include "dwarf-regs-table.h"
8 #include "perf_regs.h"
9
10
11 bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
12 {
13 struct unwind_info *ui = arg;
14 struct regs_dump *user_regs = &ui->sample->user_regs;
15 Dwarf_Word dwarf_regs[ARRAY_SIZE(s390_dwarf_regs)];
16
17 #define REG(r) ({ \
18 Dwarf_Word val = 0; \
19 perf_reg_value(&val, user_regs, PERF_REG_S390_##r); \
20 val; \
21 })
22 /*
23 * For DWARF register mapping details,
24 * see also perf/arch/s390/include/dwarf-regs-table.h
25 */
26 dwarf_regs[0] = REG(R0);
27 dwarf_regs[1] = REG(R1);
28 dwarf_regs[2] = REG(R2);
29 dwarf_regs[3] = REG(R3);
30 dwarf_regs[4] = REG(R4);
31 dwarf_regs[5] = REG(R5);
32 dwarf_regs[6] = REG(R6);
33 dwarf_regs[7] = REG(R7);
34 dwarf_regs[8] = REG(R8);
35 dwarf_regs[9] = REG(R9);
36 dwarf_regs[10] = REG(R10);
37 dwarf_regs[11] = REG(R11);
38 dwarf_regs[12] = REG(R12);
39 dwarf_regs[13] = REG(R13);
40 dwarf_regs[14] = REG(R14);
41 dwarf_regs[15] = REG(R15);
42
43 dwarf_regs[16] = REG(FP0);
44 dwarf_regs[17] = REG(FP2);
45 dwarf_regs[18] = REG(FP4);
46 dwarf_regs[19] = REG(FP6);
47 dwarf_regs[20] = REG(FP1);
48 dwarf_regs[21] = REG(FP3);
49 dwarf_regs[22] = REG(FP5);
50 dwarf_regs[23] = REG(FP7);
51 dwarf_regs[24] = REG(FP8);
52 dwarf_regs[25] = REG(FP10);
53 dwarf_regs[26] = REG(FP12);
54 dwarf_regs[27] = REG(FP14);
55 dwarf_regs[28] = REG(FP9);
56 dwarf_regs[29] = REG(FP11);
57 dwarf_regs[30] = REG(FP13);
58 dwarf_regs[31] = REG(FP15);
59
60 dwarf_regs[64] = REG(MASK);
61 dwarf_regs[65] = REG(PC);
62
63 dwfl_thread_state_register_pc(thread, dwarf_regs[65]);
64 return dwfl_thread_state_registers(thread, 0, 32, dwarf_regs);
65 }
66
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