*
* Copyright (C) 2010 Ian Munsie, IBM Corporation.
*/
-
+#include <errno.h>
#include <dwarf-regs.h>
+#include "../../../arch/powerpc/include/uapi/asm/perf_regs.h"
#define PPC_OP(op) (((op) >> 26) & 0x3F)
#define PPC_RA(a) (((a) >> 16) & 0x1f)
if ((op_loc->mem_ref) && (PPC_OP(raw_insn) != 31))
op_loc->offset = get_offset_opcode(raw_insn);
}
+
+int __get_dwarf_regnum_for_perf_regnum_powerpc(int perf_regnum)
+{
+ static const int dwarf_powerpc_regnums[] = {
+ [PERF_REG_POWERPC_R0] = 0,
+ [PERF_REG_POWERPC_R1] = 1,
+ [PERF_REG_POWERPC_R2] = 2,
+ [PERF_REG_POWERPC_R3] = 3,
+ [PERF_REG_POWERPC_R4] = 4,
+ [PERF_REG_POWERPC_R5] = 5,
+ [PERF_REG_POWERPC_R6] = 6,
+ [PERF_REG_POWERPC_R7] = 7,
+ [PERF_REG_POWERPC_R8] = 8,
+ [PERF_REG_POWERPC_R9] = 9,
+ [PERF_REG_POWERPC_R10] = 10,
+ [PERF_REG_POWERPC_R11] = 11,
+ [PERF_REG_POWERPC_R12] = 12,
+ [PERF_REG_POWERPC_R13] = 13,
+ [PERF_REG_POWERPC_R14] = 14,
+ [PERF_REG_POWERPC_R15] = 15,
+ [PERF_REG_POWERPC_R16] = 16,
+ [PERF_REG_POWERPC_R17] = 17,
+ [PERF_REG_POWERPC_R18] = 18,
+ [PERF_REG_POWERPC_R19] = 19,
+ [PERF_REG_POWERPC_R20] = 20,
+ [PERF_REG_POWERPC_R21] = 21,
+ [PERF_REG_POWERPC_R22] = 22,
+ [PERF_REG_POWERPC_R23] = 23,
+ [PERF_REG_POWERPC_R24] = 24,
+ [PERF_REG_POWERPC_R25] = 25,
+ [PERF_REG_POWERPC_R26] = 26,
+ [PERF_REG_POWERPC_R27] = 27,
+ [PERF_REG_POWERPC_R28] = 28,
+ [PERF_REG_POWERPC_R29] = 29,
+ [PERF_REG_POWERPC_R30] = 30,
+ [PERF_REG_POWERPC_R31] = 31,
+ /* TODO: PERF_REG_POWERPC_NIP */
+ [PERF_REG_POWERPC_MSR] = 66,
+ /* TODO: PERF_REG_POWERPC_ORIG_R3 */
+ [PERF_REG_POWERPC_CTR] = 109,
+ [PERF_REG_POWERPC_LINK] = 108, /* Note, previously in perf encoded as 65? */
+ [PERF_REG_POWERPC_XER] = 101,
+ /* TODO: PERF_REG_POWERPC_CCR */
+ /* TODO: PERF_REG_POWERPC_SOFTE */
+ /* TODO: PERF_REG_POWERPC_TRAP */
+ /* TODO: PERF_REG_POWERPC_DAR */
+ /* TODO: PERF_REG_POWERPC_DSISR */
+ /* TODO: PERF_REG_POWERPC_SIER */
+ /* TODO: PERF_REG_POWERPC_MMCRA */
+ /* TODO: PERF_REG_POWERPC_MMCR0 */
+ /* TODO: PERF_REG_POWERPC_MMCR1 */
+ /* TODO: PERF_REG_POWERPC_MMCR2 */
+ /* TODO: PERF_REG_POWERPC_MMCR3 */
+ /* TODO: PERF_REG_POWERPC_SIER2 */
+ /* TODO: PERF_REG_POWERPC_SIER3 */
+ /* TODO: PERF_REG_POWERPC_PMC1 */
+ /* TODO: PERF_REG_POWERPC_PMC2 */
+ /* TODO: PERF_REG_POWERPC_PMC3 */
+ /* TODO: PERF_REG_POWERPC_PMC4 */
+ /* TODO: PERF_REG_POWERPC_PMC5 */
+ /* TODO: PERF_REG_POWERPC_PMC6 */
+ /* TODO: PERF_REG_POWERPC_SDAR */
+ /* TODO: PERF_REG_POWERPC_SIAR */
+ };
+
+ if (perf_regnum == 0)
+ return 0;
+
+ if (perf_regnum < 0 || perf_regnum > (int)ARRAY_SIZE(dwarf_powerpc_regnums) ||
+ dwarf_powerpc_regnums[perf_regnum] == 0)
+ return -ENOENT;
+
+ return dwarf_powerpc_regnums[perf_regnum];
+}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <elfutils/libdwfl.h>
-#include <linux/kernel.h>
-#include "../arch/powerpc/include/uapi/asm/perf_regs.h"
-#include "util/unwind-libdw.h"
-#include "util/perf_regs.h"
-#include "util/sample.h"
-
-/* See backends/ppc_initreg.c and backends/ppc_regs.c in elfutils. */
-static const int special_regs[3][2] = {
- { 65, PERF_REG_POWERPC_LINK },
- { 101, PERF_REG_POWERPC_XER },
- { 109, PERF_REG_POWERPC_CTR },
-};
-
-bool libdw_set_initial_registers_powerpc(Dwfl_Thread *thread, void *arg)
-{
- struct unwind_info *ui = arg;
- struct regs_dump *user_regs = perf_sample__user_regs(ui->sample);
- Dwarf_Word dwarf_regs[32], dwarf_nip;
- size_t i;
-
-#define REG(r) ({ \
- Dwarf_Word val = 0; \
- perf_reg_value(&val, user_regs, PERF_REG_POWERPC_##r); \
- val; \
-})
-
- dwarf_regs[0] = REG(R0);
- dwarf_regs[1] = REG(R1);
- dwarf_regs[2] = REG(R2);
- dwarf_regs[3] = REG(R3);
- dwarf_regs[4] = REG(R4);
- dwarf_regs[5] = REG(R5);
- dwarf_regs[6] = REG(R6);
- dwarf_regs[7] = REG(R7);
- 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(R16);
- dwarf_regs[17] = REG(R17);
- dwarf_regs[18] = REG(R18);
- dwarf_regs[19] = REG(R19);
- dwarf_regs[20] = REG(R20);
- dwarf_regs[21] = REG(R21);
- dwarf_regs[22] = REG(R22);
- dwarf_regs[23] = REG(R23);
- dwarf_regs[24] = REG(R24);
- dwarf_regs[25] = REG(R25);
- dwarf_regs[26] = REG(R26);
- dwarf_regs[27] = REG(R27);
- dwarf_regs[28] = REG(R28);
- dwarf_regs[29] = REG(R29);
- dwarf_regs[30] = REG(R30);
- dwarf_regs[31] = REG(R31);
- if (!dwfl_thread_state_registers(thread, 0, 32, dwarf_regs))
- return false;
-
- dwarf_nip = REG(NIP);
- dwfl_thread_state_register_pc(thread, dwarf_nip);
- for (i = 0; i < ARRAY_SIZE(special_regs); i++) {
- Dwarf_Word val = 0;
- perf_reg_value(&val, user_regs, special_regs[i][1]);
- if (!dwfl_thread_state_registers(thread,
- special_regs[i][0], 1,
- &val))
- return false;
- }
-
- return true;
-}
projects / thirdparty / linux.git / commitdiff
