Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
---
arch/arc/kernel/unwind.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index e02d974ea789..d5ffb4a78104 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -142,13 +142,14 @@ struct unwind_item {
struct unwind_state {
uleb128_t loc, org;
+ uleb128_t first_reg;
uleb128_t codeAlign;
sleb128_t dataAlign;
struct cfa {
uleb128_t reg, offs;
} cfa;
struct unwind_item regs[ARRAY_SIZE(reg_info)];
- unsigned stackDepth:8, has_cfa_register:8;
+ unsigned stackDepth:8, has_cfa_register:8, pad:16;
const u8 *label;
const u8 *stack[MAX_STACK_DEPTH];
};
@@ -597,6 +598,7 @@ static void set_rule(uleb128_t reg, enum item_location
where, uleb128_t value,
if (reg < ARRAY_SIZE(state->regs)) {
state->regs[reg].where = where;
state->regs[reg].value = value;
+ state->first_reg = min(reg, state->first_reg);
#ifdef UNWIND_DEBUG
switch (where) {
@@ -979,6 +981,7 @@ int arc_unwind(struct unwind_frame_info *frame)
goto bad_unw;
}
+ state.first_reg = 13;
state.org = state.loc = startLoc;
memcpy(&state.cfa, &seed_CFA, sizeof(state.cfa));
state.codeAlign = table->cie.codeAlign;
@@ -1032,9 +1035,9 @@ int arc_unwind(struct unwind_frame_info *frame)
}
}
- unw_debug("\nRegister state after evaluation with realtime Stack:\n");
+ unw_debug("\nRegister state after evaluation with realtime Stack @ %ld
:\n", state.first_reg);
fptr = (unsigned long *)(&frame->regs);
- for (i = 0; i < ARRAY_SIZE(state.regs); ++i, fptr++) {
+ for (i = state.first_reg; i < ARRAY_SIZE(state.regs); ++i, fptr++) {
switch (state.regs[i].where) {
case Nowhere:
--
1.9.1
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