diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2018-08-28 14:52:27 -0700 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2018-10-01 11:08:35 -0700 |
| commit | 15477819427f5d2f0eddd4daba4159dee5f3b2ec (patch) | |
| tree | 1ca56764eb6ff63f23b2ed8bd39c37e448310457 /target/xtensa | |
| parent | 4c6ec5f3cd88cb27a4e40a480b34e433a725dc05 (diff) | |
target/xtensa: extract test for debug exception
- mark break and break.n instructions;
- collect debug cause bits from parameter 0 of instructions marked for
debug exception;
- put debug exception check right after syscall check;
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'target/xtensa')
| -rw-r--r-- | target/xtensa/translate.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c index 69d3c583e8..570d4a39e2 100644 --- a/target/xtensa/translate.c +++ b/target/xtensa/translate.c @@ -959,6 +959,7 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) uint32_t arg[MAX_OPCODE_ARGS]; uint32_t raw_arg[MAX_OPCODE_ARGS]; } slot_prop[MAX_INSN_SLOTS]; + uint32_t debug_cause = 0; if (len == XTENSA_UNDEFINED) { qemu_log_mask(LOG_GUEST_ERROR, @@ -1040,6 +1041,9 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE); return; } + if (ops->op_flags & XTENSA_OP_DEBUG_BREAK) { + debug_cause |= ops->par[0]; + } } if ((op_flags & XTENSA_OP_PRIVILEGED) && @@ -1052,6 +1056,11 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) return; } + if ((op_flags & XTENSA_OP_DEBUG_BREAK) && dc->debug) { + gen_debug_exception(dc, debug_cause); + return; + } + for (slot = 0; slot < slots; ++slot) { XtensaOpcodeOps *ops = slot_prop[slot].ops; @@ -1515,14 +1524,6 @@ static void translate_bp(DisasContext *dc, const uint32_t arg[], tcg_temp_free(tmp); } -static void translate_break(DisasContext *dc, const uint32_t arg[], - const uint32_t par[]) -{ - if (dc->debug) { - gen_debug_exception(dc, par[0]); - } -} - static void translate_call0(DisasContext *dc, const uint32_t arg[], const uint32_t par[]) { @@ -2827,12 +2828,14 @@ static const XtensaOpcodeOps core_ops[] = { .par = (const uint32_t[]){TCG_COND_EQ}, }, { .name = "break", - .translate = translate_break, + .translate = translate_nop, .par = (const uint32_t[]){DEBUGCAUSE_BI}, + .op_flags = XTENSA_OP_DEBUG_BREAK, }, { .name = "break.n", - .translate = translate_break, + .translate = translate_nop, .par = (const uint32_t[]){DEBUGCAUSE_BN}, + .op_flags = XTENSA_OP_DEBUG_BREAK, }, { .name = "bt", .translate = translate_bp, |