[PATCH v2 08/16] perf annotate-arm64: Enable instruction tracking support

[Tengda Wu]

Enable instruction tracking for the arm64 architecture in 'perf annotate'
to support data type profiling.

Define ARM64_REG_SP as 31 to correctly identify the stack pointer
register during type state initialization. Update
arch_supports_insn_tracking() to include arm64, which allows
find_data_type_block() to process the instruction scope for arm64.

Signed-off-by: Li Huafei <lihuafei1@xxxxxxxxxx>
Signed-off-by: Tengda Wu <wutengda@xxxxxxxxxxxxxxx>
---
 tools/perf/util/annotate-data.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/annotate-data.c b/tools/perf/util/annotate-data.c
index 1eff0a27237d..fd6416d43a2e 100644
--- a/tools/perf/util/annotate-data.c
+++ b/tools/perf/util/annotate-data.c
@@ -28,6 +28,7 @@
 
 /* register number of the stack pointer */
 #define X86_REG_SP 7
+#define ARM64_REG_SP 31
 
 static void delete_var_types(struct die_var_type *var_types);
 
@@ -177,7 +178,8 @@ static void init_type_state(struct type_state *state, const struct arch *arch)
 		state->regs[11].caller_saved = true;
 		state->ret_reg = 0;
 		state->stack_reg = X86_REG_SP;
-	}
+	} else if (arch__is_arm64(arch))
+		state->stack_reg = ARM64_REG_SP;
 }
 
 static void exit_type_state(struct type_state *state)
@@ -1421,7 +1423,8 @@ static enum type_match_result find_data_type_insn(struct data_loc_info *dloc,
 
 static int arch_supports_insn_tracking(struct data_loc_info *dloc)
 {
-	if ((arch__is_x86(dloc->arch)) || (arch__is_powerpc(dloc->arch)))
+	if ((arch__is_x86(dloc->arch)) || (arch__is_powerpc(dloc->arch)) ||
+	    (arch__is_arm64(dloc->arch)))
 		return 1;
 	return 0;
 }
-- 
2.34.1