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authorMax Filippov <jcmvbkbc@gmail.com>2017-11-03 19:44:46 -0700
committerMax Filippov <jcmvbkbc@gmail.com>2018-01-09 09:55:38 -0800
commit33071f6888913ef2c6600e827bf63bbb86e249a8 (patch)
tree9ad73974941e506cc138f6489d3de6b36529504c /target/xtensa/translate.c
parent502d0f361b690df7d5b19ed8869d7f465fd51ed1 (diff)
target/xtensa: use libisa for instruction decoding
Replace manual opcode analysis with libisa-based code. This makes it possible to support variable-encoding instructions of the core ISA, like const16, and will allow to support advanced Xtensa features, like FLIX and TIE. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'target/xtensa/translate.c')
-rw-r--r--target/xtensa/translate.c2228
1 files changed, 84 insertions, 2144 deletions
diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c
index f6a53cdfc2..cf204fcb60 100644
--- a/target/xtensa/translate.c
+++ b/target/xtensa/translate.c
@@ -77,6 +77,8 @@ typedef struct DisasContext {
unsigned cpenable;
uint32_t *raw_arg;
+ xtensa_insnbuf insnbuf;
+ xtensa_insnbuf slotbuf;
} DisasContext;
static TCGv_i32 cpu_pc;
@@ -254,11 +256,6 @@ void xtensa_translate_init(void)
}
}
-static inline bool option_bits_enabled(DisasContext *dc, uint64_t opt)
-{
- return xtensa_option_bits_enabled(dc->config, opt);
-}
-
static inline bool option_enabled(DisasContext *dc, int opt)
{
return xtensa_option_enabled(dc->config, opt);
@@ -471,21 +468,21 @@ static void gen_jumpi_check_loop_end(DisasContext *dc, int slot)
}
static void gen_brcond(DisasContext *dc, TCGCond cond,
- TCGv_i32 t0, TCGv_i32 t1, uint32_t offset)
+ TCGv_i32 t0, TCGv_i32 t1, uint32_t addr)
{
TCGLabel *label = gen_new_label();
tcg_gen_brcond_i32(cond, t0, t1, label);
gen_jumpi_check_loop_end(dc, 0);
gen_set_label(label);
- gen_jumpi(dc, dc->pc + offset, 1);
+ gen_jumpi(dc, addr, 1);
}
static void gen_brcondi(DisasContext *dc, TCGCond cond,
- TCGv_i32 t0, uint32_t t1, uint32_t offset)
+ TCGv_i32 t0, uint32_t t1, uint32_t addr)
{
TCGv_i32 tmp = tcg_const_i32(t1);
- gen_brcond(dc, cond, t0, tmp, offset);
+ gen_brcond(dc, cond, t0, tmp, addr);
tcg_temp_free(tmp);
}
@@ -947,2164 +944,98 @@ static TCGv_i32 gen_mac16_m(TCGv_i32 v, bool hi, bool is_unsigned)
return m;
}
-static inline unsigned xtensa_op0_insn_len(unsigned op0)
+static inline unsigned xtensa_op0_insn_len(DisasContext *dc, uint8_t op0)
{
- return op0 >= 8 ? 2 : 3;
+ return xtensa_isa_length_from_chars(dc->config->isa, &op0);
}
static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc)
{
-#define HAS_OPTION_BITS(opt) do { \
- if (!option_bits_enabled(dc, opt)) { \
- qemu_log_mask(LOG_GUEST_ERROR, "Option is not enabled %s:%d\n", \
- __FILE__, __LINE__); \
- goto invalid_opcode; \
- } \
- } while (0)
-
-#define HAS_OPTION(opt) HAS_OPTION_BITS(XTENSA_OPTION_BIT(opt))
-
-#define TBD() qemu_log_mask(LOG_UNIMP, "TBD(pc = %08x): %s:%d\n", dc->pc, __FILE__, __LINE__)
-#define RESERVED() do { \
- qemu_log_mask(LOG_GUEST_ERROR, "RESERVED(pc = %08x, %02x%02x%02x): %s:%d\n", \
- dc->pc, b0, b1, b2, __FILE__, __LINE__); \
- goto invalid_opcode; \
- } while (0)
-
-
-#ifdef TARGET_WORDS_BIGENDIAN
-#define OP0 (((b0) & 0xf0) >> 4)
-#define OP1 (((b2) & 0xf0) >> 4)
-#define OP2 ((b2) & 0xf)
-#define RRR_R ((b1) & 0xf)
-#define RRR_S (((b1) & 0xf0) >> 4)
-#define RRR_T ((b0) & 0xf)
-#else
-#define OP0 (((b0) & 0xf))
-#define OP1 (((b2) & 0xf))
-#define OP2 (((b2) & 0xf0) >> 4)
-#define RRR_R (((b1) & 0xf0) >> 4)
-#define RRR_S (((b1) & 0xf))
-#define RRR_T (((b0) & 0xf0) >> 4)
-#endif
-#define RRR_X ((RRR_R & 0x4) >> 2)
-#define RRR_Y ((RRR_T & 0x4) >> 2)
-#define RRR_W (RRR_R & 0x3)
-
-#define RRRN_R RRR_R
-#define RRRN_S RRR_S
-#define RRRN_T RRR_T
-
-#define RRI4_R RRR_R
-#define RRI4_S RRR_S
-#define RRI4_T RRR_T
-#ifdef TARGET_WORDS_BIGENDIAN
-#define RRI4_IMM4 ((b2) & 0xf)
-#else
-#define RRI4_IMM4 (((b2) & 0xf0) >> 4)
-#endif
-
-#define RRI8_R RRR_R
-#define RRI8_S RRR_S
-#define RRI8_T RRR_T
-#define RRI8_IMM8 (b2)
-#define RRI8_IMM8_SE ((((b2) & 0x80) ? 0xffffff00 : 0) | RRI8_IMM8)
-
-#ifdef TARGET_WORDS_BIGENDIAN
-#define RI16_IMM16 (((b1) << 8) | (b2))
-#else
-#define RI16_IMM16 (((b2) << 8) | (b1))
-#endif
-
-#ifdef TARGET_WORDS_BIGENDIAN
-#define CALL_N (((b0) & 0xc) >> 2)
-#define CALL_OFFSET ((((b0) & 0x3) << 16) | ((b1) << 8) | (b2))
-#else
-#define CALL_N (((b0) & 0x30) >> 4)
-#define CALL_OFFSET ((((b0) & 0xc0) >> 6) | ((b1) << 2) | ((b2) << 10))
-#endif
-#define CALL_OFFSET_SE \
- (((CALL_OFFSET & 0x20000) ? 0xfffc0000 : 0) | CALL_OFFSET)
-
-#define CALLX_N CALL_N
-#ifdef TARGET_WORDS_BIGENDIAN
-#define CALLX_M ((b0) & 0x3)
-#else
-#define CALLX_M (((b0) & 0xc0) >> 6)
-#endif
-#define CALLX_S RRR_S
-
-#define BRI12_M CALLX_M
-#define BRI12_S RRR_S
-#ifdef TARGET_WORDS_BIGENDIAN
-#define BRI12_IMM12 ((((b1) & 0xf) << 8) | (b2))
-#else
-#define BRI12_IMM12 ((((b1) & 0xf0) >> 4) | ((b2) << 4))
-#endif
-#define BRI12_IMM12_SE (((BRI12_IMM12 & 0x800) ? 0xfffff000 : 0) | BRI12_IMM12)
-
-#define BRI8_M BRI12_M
-#define BRI8_R RRI8_R
-#define BRI8_S RRI8_S
-#define BRI8_IMM8 RRI8_IMM8
-#define BRI8_IMM8_SE RRI8_IMM8_SE
-
-#define RSR_SR (b1)
-
- uint8_t b0 = cpu_ldub_code(env, dc->pc);
- uint8_t b1 = cpu_ldub_code(env, dc->pc + 1);
- uint8_t b2 = 0;
- unsigned len = xtensa_op0_insn_len(OP0);
-
- static const uint32_t B4CONST[] = {
- 0xffffffff, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
- };
-
- static const uint32_t B4CONSTU[] = {
- 32768, 65536, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
- };
-
- switch (len) {
- case 2:
- HAS_OPTION(XTENSA_OPTION_CODE_DENSITY);
- break;
-
- case 3:
- b2 = cpu_ldub_code(env, dc->pc + 2);
- break;
+ xtensa_isa isa = dc->config->isa;
+ unsigned char b[MAX_INSN_LENGTH] = {cpu_ldub_code(env, dc->pc)};
+ unsigned len = xtensa_op0_insn_len(dc, b[0]);
+ xtensa_format fmt;
+ unsigned slot, slots;
+ unsigned i;
- default:
- RESERVED();
+ if (len == XTENSA_UNDEFINED) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "unknown instruction length (pc = %08x)\n",
+ dc->pc);
+ gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
+ return;
}
- dc->next_pc = dc->pc + len;
-
- switch (OP0) {
- case 0: /*QRST*/
- switch (OP1) {
- case 0: /*RST0*/
- switch (OP2) {
- case 0: /*ST0*/
- if ((RRR_R & 0xc) == 0x8) {
- HAS_OPTION(XTENSA_OPTION_BOOLEAN);
- }
-
- switch (RRR_R) {
- case 0: /*SNM0*/
- switch (CALLX_M) {
- case 0: /*ILL*/
- gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
- break;
-
- case 1: /*reserved*/
- RESERVED();
- break;
-
- case 2: /*JR*/
- switch (CALLX_N) {
- case 0: /*RET*/
- case 2: /*JX*/
- if (gen_window_check1(dc, CALLX_S)) {
- gen_jump(dc, cpu_R[CALLX_S]);
- }
- break;
-
- case 1: /*RETWw*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- {
- TCGv_i32 tmp = tcg_const_i32(dc->pc);
- gen_helper_retw(tmp, cpu_env, tmp);
- gen_jump(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 3: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 3: /*CALLX*/
- if (!gen_window_check2(dc, CALLX_S, CALLX_N << 2)) {
- break;
- }
- switch (CALLX_N) {
- case 0: /*CALLX0*/
- {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
- tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
- gen_jump(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 1: /*CALLX4w*/
- case 2: /*CALLX8w*/
- case 3: /*CALLX12w*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- {
- TCGv_i32 tmp = tcg_temp_new_i32();
-
- tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
- gen_callw(dc, CALLX_N, tmp);
- tcg_temp_free(tmp);
- }
- break;
- }
- break;
- }
- break;
-
- case 1: /*MOVSPw*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_window_check2(dc, RRR_T, RRR_S)) {
- TCGv_i32 pc = tcg_const_i32(dc->pc);
- gen_helper_movsp(cpu_env, pc);
- tcg_gen_mov_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
- tcg_temp_free(pc);
- }
- break;
-
- case 2: /*SYNC*/
- switch (RRR_T) {
- case 0: /*ISYNC*/
- break;
-
- case 1: /*RSYNC*/
- break;
-
- case 2: /*ESYNC*/
- break;
-
- case 3: /*DSYNC*/
- break;
-
- case 8: /*EXCW*/
- HAS_OPTION(XTENSA_OPTION_EXCEPTION);
- break;
-
- case 12: /*MEMW*/
- break;
-
- case 13: /*EXTW*/
- break;
-
- case 15: /*NOP*/
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 3: /*RFEIx*/
- switch (RRR_T) {
- case 0: /*RFETx*/
- HAS_OPTION(XTENSA_OPTION_EXCEPTION);
- switch (RRR_S) {
- case 0: /*RFEx*/
- if (gen_check_privilege(dc)) {
- tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
- gen_check_interrupts(dc);
- gen_jump(dc, cpu_SR[EPC1]);
- }
- break;
-
- case 1: /*RFUEx*/
- RESERVED();
- break;
-
- case 2: /*RFDEx*/
- if (gen_check_privilege(dc)) {
- gen_jump(dc, cpu_SR[
- dc->config->ndepc ? DEPC : EPC1]);
- }
- break;
-
- case 4: /*RFWOw*/
- case 5: /*RFWUw*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_check_privilege(dc)) {
- TCGv_i32 tmp = tcg_const_i32(1);
-
- tcg_gen_andi_i32(
- cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
- tcg_gen_shl_i32(tmp, tmp, cpu_SR[WINDOW_BASE]);
-
- if (RRR_S == 4) {
- tcg_gen_andc_i32(cpu_SR[WINDOW_START],
- cpu_SR[WINDOW_START], tmp);
- } else {
- tcg_gen_or_i32(cpu_SR[WINDOW_START],
- cpu_SR[WINDOW_START], tmp);
- }
-
- gen_helper_restore_owb(cpu_env);
- gen_check_interrupts(dc);
- gen_jump(dc, cpu_SR[EPC1]);
-
- tcg_temp_free(tmp);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 1: /*RFIx*/
- HAS_OPTION(XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT);
- if (RRR_S >= 2 && RRR_S <= dc->config->nlevel) {
- if (gen_check_privilege(dc)) {
- tcg_gen_mov_i32(cpu_SR[PS],
- cpu_SR[EPS2 + RRR_S - 2]);
- gen_check_interrupts(dc);
- gen_jump(dc, cpu_SR[EPC1 + RRR_S - 1]);
- }
- } else {
- qemu_log_mask(LOG_GUEST_ERROR, "RFI %d is illegal\n", RRR_S);
- gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
- }
- break;
-
- case 2: /*RFME*/
- TBD();
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
-
- }
- break;
-
- case 4: /*BREAKx*/
- HAS_OPTION(XTENSA_OPTION_DEBUG);
- if (dc->debug) {
- gen_debug_exception(dc, DEBUGCAUSE_BI);
- }
- break;
-
- case 5: /*SYSCALLx*/
- HAS_OPTION(XTENSA_OPTION_EXCEPTION);
- switch (RRR_S) {
- case 0: /*SYSCALLx*/
- gen_exception_cause(dc, SYSCALL_CAUSE);
- break;
-
- case 1: /*SIMCALL*/
- if (semihosting_enabled()) {
- if (gen_check_privilege(dc)) {
- gen_helper_simcall(cpu_env);
- }
- } else {
- qemu_log_mask(LOG_GUEST_ERROR, "SIMCALL but semihosting is disabled\n");
- gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
- }
- break;
-
- default:
- RESERVED();
- break;
- }
- break;
-
- case 6: /*RSILx*/
- HAS_OPTION(XTENSA_OPTION_INTERRUPT);
- if (gen_check_privilege(dc) &&
- gen_window_check1(dc, RRR_T)) {
- tcg_gen_mov_i32(cpu_R[RRR_T], cpu_SR[PS]);
- tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_INTLEVEL);
- tcg_gen_ori_i32(cpu_SR[PS], cpu_SR[PS], RRR_S);
- gen_check_interrupts(dc);
- gen_jumpi_check_loop_end(dc, 0);
- }
- break;
-
- case 7: /*WAITIx*/
- HAS_OPTION(XTENSA_OPTION_INTERRUPT);
- if (gen_check_privilege(dc)) {
- gen_waiti(dc, RRR_S);
- }
- break;
-
- case 8: /*ANY4p*/
- case 9: /*ALL4p*/
- case 10: /*ANY8p*/
- case 11: /*ALL8p*/
- HAS_OPTION(XTENSA_OPTION_BOOLEAN);
- {
- const unsigned shift = (RRR_R & 2) ? 8 : 4;
- TCGv_i32 mask = tcg_const_i32(
- ((1 << shift) - 1) << RRR_S);
- TCGv_i32 tmp = tcg_temp_new_i32();
-
- tcg_gen_and_i32(tmp, cpu_SR[BR], mask);
- if (RRR_R & 1) { /*ALL*/
- tcg_gen_addi_i32(tmp, tmp, 1 << RRR_S);
- } else { /*ANY*/
- tcg_gen_add_i32(tmp, tmp, mask);
- }
- tcg_gen_shri_i32(tmp, tmp, RRR_S + shift);
- tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR],
- tmp, RRR_T, 1);
- tcg_temp_free(mask);
- tcg_temp_free(tmp);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
-
- }
- break;
-
- case 1: /*AND*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- tcg_gen_and_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 2: /*OR*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- tcg_gen_or_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 3: /*XOR*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- tcg_gen_xor_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 4: /*ST1*/
- switch (RRR_R) {
- case 0: /*SSR*/
- if (gen_window_check1(dc, RRR_S)) {
- gen_right_shift_sar(dc, cpu_R[RRR_S]);
- }
- break;
-
- case 1: /*SSL*/
- if (gen_window_check1(dc, RRR_S)) {
- gen_left_shift_sar(dc, cpu_R[RRR_S]);
- }
- break;
-
- case 2: /*SSA8L*/
- if (gen_window_check1(dc, RRR_S)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
- gen_right_shift_sar(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 3: /*SSA8B*/
- if (gen_window_check1(dc, RRR_S)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
- gen_left_shift_sar(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 4: /*SSAI*/
- {
- TCGv_i32 tmp = tcg_const_i32(
- RRR_S | ((RRR_T & 1) << 4));
- gen_right_shift_sar(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 6: /*RER*/
- HAS_OPTION(XTENSA_OPTION_EXTERN_REGS);
- if (gen_check_privilege(dc) &&
- gen_window_check2(dc, RRR_S, RRR_T)) {
- gen_helper_rer(cpu_R[RRR_T], cpu_env, cpu_R[RRR_S]);
- }
- break;
-
- case 7: /*WER*/
- HAS_OPTION(XTENSA_OPTION_EXTERN_REGS);
- if (gen_check_privilege(dc) &&
- gen_window_check2(dc, RRR_S, RRR_T)) {
- gen_helper_wer(cpu_env, cpu_R[RRR_T], cpu_R[RRR_S]);
- }
- break;
-
- case 8: /*ROTWw*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_check_privilege(dc)) {
- TCGv_i32 tmp = tcg_const_i32(
- RRR_T | ((RRR_T & 8) ? 0xfffffff0 : 0));
- gen_helper_rotw(cpu_env, tmp);
- tcg_temp_free(tmp);
- /* This can change tb->flags, so exit tb */
- gen_jumpi_check_loop_end(dc, -1);
- }
- break;
-
- case 14: /*NSAu*/
- HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
- if (gen_window_check2(dc, RRR_S, RRR_T)) {
- tcg_gen_clrsb_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
- }
- break;
-
- case 15: /*NSAUu*/
- HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
- if (gen_window_check2(dc, RRR_S, RRR_T)) {
- tcg_gen_clzi_i32(cpu_R[RRR_T], cpu_R[RRR_S], 32);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 5: /*TLB*/
- HAS_OPTION_BITS(
- XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
- XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
- XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION));
- if (gen_check_privilege(dc) &&
- gen_window_check2(dc, RRR_S, RRR_T)) {
- TCGv_i32 dtlb = tcg_const_i32((RRR_R & 8) != 0);
-
- switch (RRR_R & 7) {
- case 3: /*RITLB0*/ /*RDTLB0*/
- gen_helper_rtlb0(cpu_R[RRR_T],
- cpu_env, cpu_R[RRR_S], dtlb);
- break;
-
- case 4: /*IITLB*/ /*IDTLB*/
- gen_helper_itlb(cpu_env, cpu_R[RRR_S], dtlb);
- /* This could change memory mapping, so exit tb */
- gen_jumpi_check_loop_end(dc, -1);
- break;
-
- case 5: /*PITLB*/ /*PDTLB*/
- tcg_gen_movi_i32(cpu_pc, dc->pc);
- gen_helper_ptlb(cpu_R[RRR_T],
- cpu_env, cpu_R[RRR_S], dtlb);
- break;
-
- case 6: /*WITLB*/ /*WDTLB*/
- gen_helper_wtlb(
- cpu_env, cpu_R[RRR_T], cpu_R[RRR_S], dtlb);
- /* This could change memory mapping, so exit tb */
- gen_jumpi_check_loop_end(dc, -1);
- break;
-
- case 7: /*RITLB1*/ /*RDTLB1*/
- gen_helper_rtlb1(cpu_R[RRR_T],
- cpu_env, cpu_R[RRR_S], dtlb);
- break;
-
- default:
- tcg_temp_free(dtlb);
- RESERVED();
- break;
- }
- tcg_temp_free(dtlb);
- }
- break;
-
- case 6: /*RT0*/
- if (!gen_window_check2(dc, RRR_R, RRR_T)) {
- break;
- }
- switch (RRR_S) {
- case 0: /*NEG*/
- tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
- break;
-
- case 1: /*ABS*/
- {
- TCGv_i32 zero = tcg_const_i32(0);
- TCGv_i32 neg = tcg_temp_new_i32();
-
- tcg_gen_neg_i32(neg, cpu_R[RRR_T]);
- tcg_gen_movcond_i32(TCG_COND_GE, cpu_R[RRR_R],
- cpu_R[RRR_T], zero, cpu_R[RRR_T], neg);
- tcg_temp_free(neg);
- tcg_temp_free(zero);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 7: /*reserved*/
- RESERVED();
- break;
-
- case 8: /*ADD*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- tcg_gen_add_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 9: /*ADD**/
- case 10:
- case 11:
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 8);
- tcg_gen_add_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
- tcg_temp_free(tmp);
- }
- break;
-
- case 12: /*SUB*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- tcg_gen_sub_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 13: /*SUB**/
- case 14:
- case 15:
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 12);
- tcg_gen_sub_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
- tcg_temp_free(tmp);
- }
- break;
- }
- break;
-
- case 1: /*RST1*/
- switch (OP2) {
- case 0: /*SLLI*/
- case 1:
- if (gen_window_check2(dc, RRR_R, RRR_S)) {
- tcg_gen_shli_i32(cpu_R[RRR_R], cpu_R[RRR_S],
- 32 - (RRR_T | ((OP2 & 1) << 4)));
- }
- break;
-
- case 2: /*SRAI*/
- case 3:
- if (gen_window_check2(dc, RRR_R, RRR_T)) {
- tcg_gen_sari_i32(cpu_R[RRR_R], cpu_R[RRR_T],
- RRR_S | ((OP2 & 1) << 4));
- }
- break;
-
- case 4: /*SRLI*/
- if (gen_window_check2(dc, RRR_R, RRR_T)) {
- tcg_gen_shri_i32(cpu_R[RRR_R], cpu_R[RRR_T], RRR_S);
- }
- break;
-
- case 6: /*XSR*/
- if (gen_check_sr(dc, RSR_SR, SR_X) &&
- (RSR_SR < 64 || gen_check_privilege(dc)) &&
- gen_window_check1(dc, RRR_T)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- bool rsr_end, wsr_end;
-
- tcg_gen_mov_i32(tmp, cpu_R[RRR_T]);
- rsr_end = gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
- wsr_end = gen_wsr(dc, RSR_SR, tmp);
- tcg_temp_free(tmp);
- if (rsr_end && !wsr_end) {
- gen_jumpi_check_loop_end(dc, 0);
- }
- }
- break;
-
- /*
- * Note: 64 bit ops are used here solely because SAR values
- * have range 0..63
- */
-#define gen_shift_reg(cmd, reg) do { \
- TCGv_i64 tmp = tcg_temp_new_i64(); \
- tcg_gen_extu_i32_i64(tmp, reg); \
- tcg_gen_##cmd##_i64(v, v, tmp); \
- tcg_gen_extrl_i64_i32(cpu_R[RRR_R], v); \
- tcg_temp_free_i64(v); \
- tcg_temp_free_i64(tmp); \
- } while (0)
-
-#define gen_shift(cmd) gen_shift_reg(cmd, cpu_SR[SAR])
-
- case 8: /*SRC*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- TCGv_i64 v = tcg_temp_new_i64();
- tcg_gen_concat_i32_i64(v, cpu_R[RRR_T], cpu_R[RRR_S]);
- gen_shift(shr);
- }
- break;
-
- case 9: /*SRL*/
- if (!gen_window_check2(dc, RRR_R, RRR_T)) {
- break;
- }
- if (dc->sar_5bit) {
- tcg_gen_shr_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
- } else {
- TCGv_i64 v = tcg_temp_new_i64();
- tcg_gen_extu_i32_i64(v, cpu_R[RRR_T]);
- gen_shift(shr);
- }
- break;
-
- case 10: /*SLL*/
- if (!gen_window_check2(dc, RRR_R, RRR_S)) {
- break;
- }
- if (dc->sar_m32_5bit) {
- tcg_gen_shl_i32(cpu_R[RRR_R], cpu_R[RRR_S], dc->sar_m32);
- } else {
- TCGv_i64 v = tcg_temp_new_i64();
- TCGv_i32 s = tcg_const_i32(32);
- tcg_gen_sub_i32(s, s, cpu_SR[SAR]);
- tcg_gen_andi_i32(s, s, 0x3f);
- tcg_gen_extu_i32_i64(v, cpu_R[RRR_S]);
- gen_shift_reg(shl, s);
- tcg_temp_free(s);
- }
- break;
-
- case 11: /*SRA*/
- if (!gen_window_check2(dc, RRR_R, RRR_T)) {
- break;
- }
- if (dc->sar_5bit) {
- tcg_gen_sar_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
- } else {
- TCGv_i64 v = tcg_temp_new_i64();
- tcg_gen_ext_i32_i64(v, cpu_R[RRR_T]);
- gen_shift(sar);
- }
- break;
-#undef gen_shift
-#undef gen_shift_reg
-
- case 12: /*MUL16U*/
- HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- TCGv_i32 v1 = tcg_temp_new_i32();
- TCGv_i32 v2 = tcg_temp_new_i32();
- tcg_gen_ext16u_i32(v1, cpu_R[RRR_S]);
- tcg_gen_ext16u_i32(v2, cpu_R[RRR_T]);
- tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
- tcg_temp_free(v2);
- tcg_temp_free(v1);
- }
- break;
-
- case 13: /*MUL16S*/
- HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- TCGv_i32 v1 = tcg_temp_new_i32();
- TCGv_i32 v2 = tcg_temp_new_i32();
- tcg_gen_ext16s_i32(v1, cpu_R[RRR_S]);
- tcg_gen_ext16s_i32(v2, cpu_R[RRR_T]);
- tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
- tcg_temp_free(v2);
- tcg_temp_free(v1);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 2: /*RST2*/
- if (OP2 >= 8 && !gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- break;
- }
-
- if (OP2 >= 12) {
- HAS_OPTION(XTENSA_OPTION_32_BIT_IDIV);
- TCGLabel *label = gen_new_label();
- tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0, label);
- gen_exception_cause(dc, INTEGER_DIVIDE_BY_ZERO_CAUSE);
- gen_set_label(label);
- }
-
- switch (OP2) {
-#define BOOLEAN_LOGIC(fn, r, s, t) \
- do { \
- HAS_OPTION(XTENSA_OPTION_BOOLEAN); \
- TCGv_i32 tmp1 = tcg_temp_new_i32(); \
- TCGv_i32 tmp2 = tcg_temp_new_i32(); \
- \
- tcg_gen_shri_i32(tmp1, cpu_SR[BR], s); \
- tcg_gen_shri_i32(tmp2, cpu_SR[BR], t); \
- tcg_gen_##fn##_i32(tmp1, tmp1, tmp2); \
- tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR], tmp1, r, 1); \
- tcg_temp_free(tmp1); \
- tcg_temp_free(tmp2); \
- } while (0)
-
- case 0: /*ANDBp*/
- BOOLEAN_LOGIC(and, RRR_R, RRR_S, RRR_T);
- break;
-
- case 1: /*ANDBCp*/
- BOOLEAN_LOGIC(andc, RRR_R, RRR_S, RRR_T);
- break;
-
- case 2: /*ORBp*/
- BOOLEAN_LOGIC(or, RRR_R, RRR_S, RRR_T);
- break;
-
- case 3: /*ORBCp*/
- BOOLEAN_LOGIC(orc, RRR_R, RRR_S, RRR_T);
- break;
-
- case 4: /*XORBp*/
- BOOLEAN_LOGIC(xor, RRR_R, RRR_S, RRR_T);
- break;
-
-#undef BOOLEAN_LOGIC
-
- case 8: /*MULLi*/
- HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL);
- tcg_gen_mul_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- break;
-
- case 10: /*MULUHi*/
- case 11: /*MULSHi*/
- HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL_HIGH);
- {
- TCGv lo = tcg_temp_new();
-
- if (OP2 == 10) {
- tcg_gen_mulu2_i32(lo, cpu_R[RRR_R],
- cpu_R[RRR_S], cpu_R[RRR_T]);
- } else {
- tcg_gen_muls2_i32(lo, cpu_R[RRR_R],
- cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- tcg_temp_free(lo);
- }
- break;
-
- case 12: /*QUOUi*/
- tcg_gen_divu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- break;
-
- case 13: /*QUOSi*/
- case 15: /*REMSi*/
- {
- TCGLabel *label1 = gen_new_label();
- TCGLabel *label2 = gen_new_label();
-
- tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_S], 0x80000000,
- label1);
- tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0xffffffff,
- label1);
- tcg_gen_movi_i32(cpu_R[RRR_R],
- OP2 == 13 ? 0x80000000 : 0);
- tcg_gen_br(label2);
- gen_set_label(label1);
- if (OP2 == 13) {
- tcg_gen_div_i32(cpu_R[RRR_R],
- cpu_R[RRR_S], cpu_R[RRR_T]);
- } else {
- tcg_gen_rem_i32(cpu_R[RRR_R],
- cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- gen_set_label(label2);
- }
- break;
-
- case 14: /*REMUi*/
- tcg_gen_remu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 3: /*RST3*/
- switch (OP2) {
- case 0: /*RSR*/
- if (gen_check_sr(dc, RSR_SR, SR_R) &&
- (RSR_SR < 64 || gen_check_privilege(dc)) &&
- gen_window_check1(dc, RRR_T)) {
- if (gen_rsr(dc, cpu_R[RRR_T], RSR_SR)) {
- gen_jumpi_check_loop_end(dc, 0);
- }
- }
- break;
-
- case 1: /*WSR*/
- if (gen_check_sr(dc, RSR_SR, SR_W) &&
- (RSR_SR < 64 || gen_check_privilege(dc)) &&
- gen_window_check1(dc, RRR_T)) {
- gen_wsr(dc, RSR_SR, cpu_R[RRR_T]);
- }
- break;
-
- case 2: /*SEXTu*/
- HAS_OPTION(XTENSA_OPTION_MISC_OP_SEXT);
- if (gen_window_check2(dc, RRR_R, RRR_S)) {
- int shift = 24 - RRR_T;
-
- if (shift == 24) {
- tcg_gen_ext8s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
- } else if (shift == 16) {
- tcg_gen_ext16s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
- } else {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shli_i32(tmp, cpu_R[RRR_S], shift);
- tcg_gen_sari_i32(cpu_R[RRR_R], tmp, shift);
- tcg_temp_free(tmp);
- }
- }
- break;
-
- case 3: /*CLAMPSu*/
- HAS_OPTION(XTENSA_OPTION_MISC_OP_CLAMPS);
- if (gen_window_check2(dc, RRR_R, RRR_S)) {
- TCGv_i32 tmp1 = tcg_temp_new_i32();
- TCGv_i32 tmp2 = tcg_temp_new_i32();
- TCGv_i32 zero = tcg_const_i32(0);
-
- tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 24 - RRR_T);
- tcg_gen_xor_i32(tmp2, tmp1, cpu_R[RRR_S]);
- tcg_gen_andi_i32(tmp2, tmp2, 0xffffffff << (RRR_T + 7));
-
- tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 31);
- tcg_gen_xori_i32(tmp1, tmp1, 0xffffffff >> (25 - RRR_T));
-
- tcg_gen_movcond_i32(TCG_COND_EQ, cpu_R[RRR_R], tmp2, zero,
- cpu_R[RRR_S], tmp1);
- tcg_temp_free(tmp1);
- tcg_temp_free(tmp2);
- tcg_temp_free(zero);
- }
- break;
-
- case 4: /*MINu*/
- case 5: /*MAXu*/
- case 6: /*MINUu*/
- case 7: /*MAXUu*/
- HAS_OPTION(XTENSA_OPTION_MISC_OP_MINMAX);
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- static const TCGCond cond[] = {
- TCG_COND_LE,
- TCG_COND_GE,
- TCG_COND_LEU,
- TCG_COND_GEU
- };
- tcg_gen_movcond_i32(cond[OP2 - 4], cpu_R[RRR_R],
- cpu_R[RRR_S], cpu_R[RRR_T],
- cpu_R[RRR_S], cpu_R[RRR_T]);
- }
- break;
-
- case 8: /*MOVEQZ*/
- case 9: /*MOVNEZ*/
- case 10: /*MOVLTZ*/
- case 11: /*MOVGEZ*/
- if (gen_window_check3(dc, RRR_R, RRR_S, RRR_T)) {
- static const TCGCond cond[] = {
- TCG_COND_EQ,
- TCG_COND_NE,
- TCG_COND_LT,
- TCG_COND_GE,
- };
- TCGv_i32 zero = tcg_const_i32(0);
-
- tcg_gen_movcond_i32(cond[OP2 - 8], cpu_R[RRR_R],
- cpu_R[RRR_T], zero, cpu_R[RRR_S], cpu_R[RRR_R]);
- tcg_temp_free(zero);
- }
- break;
-
- case 12: /*MOVFp*/
- case 13: /*MOVTp*/
- HAS_OPTION(XTENSA_OPTION_BOOLEAN);
- if (gen_window_check2(dc, RRR_R, RRR_S)) {
- TCGv_i32 zero = tcg_const_i32(0);
- TCGv_i32 tmp = tcg_temp_new_i32();
-
- tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
- tcg_gen_movcond_i32(OP2 & 1 ? TCG_COND_NE : TCG_COND_EQ,
- cpu_R[RRR_R], tmp, zero,
- cpu_R[RRR_S], cpu_R[RRR_R]);
-
- tcg_temp_free(tmp);
- tcg_temp_free(zero);
- }
- break;
-
- case 14: /*RUR*/
- if (gen_window_check1(dc, RRR_R)) {
- int st = (RRR_S << 4) + RRR_T;
- if (uregnames[st].name) {
- tcg_gen_mov_i32(cpu_R[RRR_R], cpu_UR[st]);
- } else {
- qemu_log_mask(LOG_UNIMP, "RUR %d not implemented, ", st);
- TBD();
- }
- }
- break;
-
- case 15: /*WUR*/
- if (gen_window_check1(dc, RRR_T)) {
- if (uregnames[RSR_SR].name) {
- gen_wur(RSR_SR, cpu_R[RRR_T]);
- } else {
- qemu_log_mask(LOG_UNIMP, "WUR %d not implemented, ", RSR_SR);
- TBD();
- }
- }
- break;
- }
- break;
-
- case 4: /*EXTUI*/
- case 5:
- if (gen_window_check2(dc, RRR_R, RRR_T)) {
- int shiftimm = RRR_S | ((OP1 & 1) << 4);
- int maskimm = (1 << (OP2 + 1)) - 1;
-
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm);
- tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm);
- tcg_temp_free(tmp);
- }
- break;
-
- case 6: /*CUST0*/
- RESERVED();
- break;
-
- case 7: /*CUST1*/
- RESERVED();
- break;
-
- case 8: /*LSCXp*/
- switch (OP2) {
- case 0: /*LSXf*/
- case 1: /*LSXUf*/
- case 4: /*SSXf*/
- case 5: /*SSXUf*/
- HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
- if (gen_window_check2(dc, RRR_S, RRR_T) &&
- gen_check_cpenable(dc, 0)) {
- TCGv_i32 addr = tcg_temp_new_i32();
- tcg_gen_add_i32(addr, cpu_R[RRR_S], cpu_R[RRR_T]);
- gen_load_store_alignment(dc, 2, addr, false);
- if (OP2 & 0x4) {
- tcg_gen_qemu_st32(cpu_FR[RRR_R], addr, dc->cring);
- } else {
- tcg_gen_qemu_ld32u(cpu_FR[RRR_R], addr, dc->cring);
- }
- if (OP2 & 0x1) {
- tcg_gen_mov_i32(cpu_R[RRR_S], addr);
- }
- tcg_temp_free(addr);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 9: /*LSC4*/
- if (!gen_window_check2(dc, RRR_S, RRR_T)) {
- break;
- }
- switch (OP2) {
- case 0: /*L32E*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_check_privilege(dc) &&
- gen_window_check2(dc, RRR_S, RRR_T)) {
- TCGv_i32 addr = tcg_temp_new_i32();
- tcg_gen_addi_i32(addr, cpu_R[RRR_S],
- (0xffffffc0 | (RRR_R << 2)));
- tcg_gen_qemu_ld32u(cpu_R[RRR_T], addr, dc->ring);
- tcg_temp_free(addr);
- }
- break;
-
- case 4: /*S32E*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_check_privilege(dc) &&
- gen_window_check2(dc, RRR_S, RRR_T)) {
- TCGv_i32 addr = tcg_temp_new_i32();
- tcg_gen_addi_i32(addr, cpu_R[RRR_S],
- (0xffffffc0 | (RRR_R << 2)));
- tcg_gen_qemu_st32(cpu_R[RRR_T], addr, dc->ring);
- tcg_temp_free(addr);
- }
- break;
-
- case 5: /*S32N*/
- if (gen_window_check2(dc, RRI4_S, RRI4_T)) {
- TCGv_i32 addr = tcg_temp_new_i32();
-
- tcg_gen_addi_i32(addr, cpu_R[RRI4_S], RRI4_IMM4 << 2);
- gen_load_store_alignment(dc, 2, addr, false);
- tcg_gen_qemu_st32(cpu_R[RRI4_T], addr, dc->cring);
- tcg_temp_free(addr);
- }
- break;
-
- default:
- RESERVED();
- break;
- }
- break;
-
- case 10: /*FP0*/
- /*DEPBITS*/
- if (option_enabled(dc, XTENSA_OPTION_DEPBITS)) {
- if (!gen_window_check2(dc, RRR_S, RRR_T)) {
- break;
- }
- tcg_gen_deposit_i32(cpu_R[RRR_T], cpu_R[RRR_T], cpu_R[RRR_S],
- OP2, RRR_R + 1);
- break;
- }
-
- HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
- switch (OP2) {
- case 0: /*ADD.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_add_s(cpu_FR[RRR_R], cpu_env,
- cpu_FR[RRR_S], cpu_FR[RRR_T]);
- }
- break;
-
- case 1: /*SUB.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_sub_s(cpu_FR[RRR_R], cpu_env,
- cpu_FR[RRR_S], cpu_FR[RRR_T]);
- }
- break;
-
- case 2: /*MUL.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_mul_s(cpu_FR[RRR_R], cpu_env,
- cpu_FR[RRR_S], cpu_FR[RRR_T]);
- }
- break;
-
- case 4: /*MADD.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_madd_s(cpu_FR[RRR_R], cpu_env,
- cpu_FR[RRR_R], cpu_FR[RRR_S],
- cpu_FR[RRR_T]);
- }
- break;
-
- case 5: /*MSUB.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_msub_s(cpu_FR[RRR_R], cpu_env,
- cpu_FR[RRR_R], cpu_FR[RRR_S],
- cpu_FR[RRR_T]);
- }
- break;
-
- case 8: /*ROUND.Sf*/
- case 9: /*TRUNC.Sf*/
- case 10: /*FLOOR.Sf*/
- case 11: /*CEIL.Sf*/
- case 14: /*UTRUNC.Sf*/
- if (gen_window_check1(dc, RRR_R) &&
- gen_check_cpenable(dc, 0)) {
- static const unsigned rounding_mode_const[] = {
- float_round_nearest_even,
- float_round_to_zero,
- float_round_down,
- float_round_up,
- [6] = float_round_to_zero,
- };
- TCGv_i32 rounding_mode = tcg_const_i32(
- rounding_mode_const[OP2 & 7]);
- TCGv_i32 scale = tcg_const_i32(RRR_T);
-
- if (OP2 == 14) {
- gen_helper_ftoui(cpu_R[RRR_R], cpu_FR[RRR_S],
- rounding_mode, scale);
- } else {
- gen_helper_ftoi(cpu_R[RRR_R], cpu_FR[RRR_S],
- rounding_mode, scale);
- }
-
- tcg_temp_free(rounding_mode);
- tcg_temp_free(scale);
- }
- break;
-
- case 12: /*FLOAT.Sf*/
- case 13: /*UFLOAT.Sf*/
- if (gen_window_check1(dc, RRR_S) &&
- gen_check_cpenable(dc, 0)) {
- TCGv_i32 scale = tcg_const_i32(-RRR_T);
-
- if (OP2 == 13) {
- gen_helper_uitof(cpu_FR[RRR_R], cpu_env,
- cpu_R[RRR_S], scale);
- } else {
- gen_helper_itof(cpu_FR[RRR_R], cpu_env,
- cpu_R[RRR_S], scale);
- }
- tcg_temp_free(scale);
- }
- break;
-
- case 15: /*FP1OP*/
- switch (RRR_T) {
- case 0: /*MOV.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_FR[RRR_S]);
- }
- break;
-
- case 1: /*ABS.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_abs_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
- }
- break;
-
- case 4: /*RFRf*/
- if (gen_window_check1(dc, RRR_R) &&
- gen_check_cpenable(dc, 0)) {
- tcg_gen_mov_i32(cpu_R[RRR_R], cpu_FR[RRR_S]);
- }
- break;
-
- case 5: /*WFRf*/
- if (gen_window_check1(dc, RRR_S) &&
- gen_check_cpenable(dc, 0)) {
- tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_R[RRR_S]);
- }
- break;
-
- case 6: /*NEG.Sf*/
- if (gen_check_cpenable(dc, 0)) {
- gen_helper_neg_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 11: /*FP1*/
- /*DEPBITS*/
- if (option_enabled(dc, XTENSA_OPTION_DEPBITS)) {
- if (!gen_window_check2(dc, RRR_S, RRR_T)) {
- break;
- }
- tcg_gen_deposit_i32(cpu_R[RRR_T], cpu_R[RRR_T], cpu_R[RRR_S],
- OP2 + 16, RRR_R + 1);
- break;
- }
-
- HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
-
-#define gen_compare(rel, br, a, b) \
- do { \
- if (gen_check_cpenable(dc, 0)) { \
- TCGv_i32 bit = tcg_const_i32(1 << br); \
- \
- gen_helper_##rel(cpu_env, bit, cpu_FR[a], cpu_FR[b]); \
- tcg_temp_free(bit); \
- } \
- } while (0)
-
- switch (OP2) {
- case 1: /*UN.Sf*/
- gen_compare(un_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 2: /*OEQ.Sf*/
- gen_compare(oeq_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 3: /*UEQ.Sf*/
- gen_compare(ueq_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 4: /*OLT.Sf*/
- gen_compare(olt_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 5: /*ULT.Sf*/
- gen_compare(ult_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 6: /*OLE.Sf*/
- gen_compare(ole_s, RRR_R, RRR_S, RRR_T);
- break;
-
- case 7: /*ULE.Sf*/
- gen_compare(ule_s, RRR_R, RRR_S, RRR_T);
- break;
-
-#undef gen_compare
-
- case 8: /*MOVEQZ.Sf*/
- case 9: /*MOVNEZ.Sf*/
- case 10: /*MOVLTZ.Sf*/
- case 11: /*MOVGEZ.Sf*/
- if (gen_window_check1(dc, RRR_T) &&
- gen_check_cpenable(dc, 0)) {
- static const TCGCond cond[] = {
- TCG_COND_EQ,
- TCG_COND_NE,
- TCG_COND_LT,
- TCG_COND_GE,
- };
- TCGv_i32 zero = tcg_const_i32(0);
-
- tcg_gen_movcond_i32(cond[OP2 - 8], cpu_FR[RRR_R],
- cpu_R[RRR_T], zero, cpu_FR[RRR_S], cpu_FR[RRR_R]);
- tcg_temp_free(zero);
- }
- break;
-
- case 12: /*MOVF.Sf*/
- case 13: /*MOVT.Sf*/
- HAS_OPTION(XTENSA_OPTION_BOOLEAN);
- if (gen_check_cpenable(dc, 0)) {
- TCGv_i32 zero = tcg_const_i32(0);
- TCGv_i32 tmp = tcg_temp_new_i32();
-
- tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
- tcg_gen_movcond_i32(OP2 & 1 ? TCG_COND_NE : TCG_COND_EQ,
- cpu_FR[RRR_R], tmp, zero,
- cpu_FR[RRR_S], cpu_FR[RRR_R]);
-
- tcg_temp_free(tmp);
- tcg_temp_free(zero);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 1: /*L32R*/
- if (gen_window_check1(dc, RRR_T)) {
- TCGv_i32 tmp = tcg_const_i32(
- ((dc->tb->flags & XTENSA_TBFLAG_LITBASE) ?
- 0 : ((dc->pc + 3) & ~3)) +
- (0xfffc0000 | (RI16_IMM16 << 2)));
-
- if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
- tcg_gen_add_i32(tmp, tmp, dc->litbase);
- }
- tcg_gen_qemu_ld32u(cpu_R[RRR_T], tmp, dc->cring);
- tcg_temp_free(tmp);
- }
- break;
-
- case 2: /*LSAI*/
-#define gen_load_store(type, shift) do { \
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) { \
- TCGv_i32 addr = tcg_temp_new_i32(); \
- \
- tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << shift); \
- if (shift) { \
- gen_load_store_alignment(dc, shift, addr, false); \
- } \
- tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
- tcg_temp_free(addr); \
- } \
- } while (0)
-
- switch (RRI8_R) {
- case 0: /*L8UI*/
- gen_load_store(ld8u, 0);
- break;
-
- case 1: /*L16UI*/
- gen_load_store(ld16u, 1);
- break;
-
- case 2: /*L32I*/
- gen_load_store(ld32u, 2);
- break;
-
- case 4: /*S8I*/
- gen_load_store(st8, 0);
- break;
-
- case 5: /*S16I*/
- gen_load_store(st16, 1);
- break;
-
- case 6: /*S32I*/
- gen_load_store(st32, 2);
- break;
-
-#define gen_dcache_hit_test(w, shift) do { \
- if (gen_window_check1(dc, RRI##w##_S)) { \
- TCGv_i32 addr = tcg_temp_new_i32(); \
- TCGv_i32 res = tcg_temp_new_i32(); \
- tcg_gen_addi_i32(addr, cpu_R[RRI##w##_S], \
- RRI##w##_IMM##w << shift); \
- tcg_gen_qemu_ld8u(res, addr, dc->cring); \
- tcg_temp_free(addr); \
- tcg_temp_free(res); \
- } \
- } while (0)
-
-#define gen_dcache_hit_test4() gen_dcache_hit_test(4, 4)
-#define gen_dcache_hit_test8() gen_dcache_hit_test(8, 2)
-
- case 7: /*CACHEc*/
- if (RRI8_T < 8) {
- HAS_OPTION(XTENSA_OPTION_DCACHE);
- }
-
- switch (RRI8_T) {
- case 0: /*DPFRc*/
- gen_window_check1(dc, RRI8_S);
- break;
-
- case 1: /*DPFWc*/
- gen_window_check1(dc, RRI8_S);
- break;
-
- case 2: /*DPFROc*/
- gen_window_check1(dc, RRI8_S);
- break;
-
- case 3: /*DPFWOc*/
- gen_window_check1(dc, RRI8_S);
- break;
-
- case 4: /*DHWBc*/
- gen_dcache_hit_test8();
- break;
-
- case 5: /*DHWBIc*/
- gen_dcache_hit_test8();
- break;
-
- case 6: /*DHIc*/
- if (gen_check_privilege(dc)) {
- gen_dcache_hit_test8();
- }
- break;
-
- case 7: /*DIIc*/
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI8_S);
- }
- break;
-
- case 8: /*DCEc*/
- switch (OP1) {
- case 0: /*DPFLl*/
- HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_dcache_hit_test4();
- }
- break;
-
- case 2: /*DHUl*/
- HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_dcache_hit_test4();
- }
- break;
-
- case 3: /*DIUl*/
- HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI4_S);
- }
- break;
-
- case 4: /*DIWBc*/
- HAS_OPTION(XTENSA_OPTION_DCACHE);
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI4_S);
- }
- break;
-
- case 5: /*DIWBIc*/
- HAS_OPTION(XTENSA_OPTION_DCACHE);
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI4_S);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
-
- }
- break;
-
-#undef gen_dcache_hit_test
-#undef gen_dcache_hit_test4
-#undef gen_dcache_hit_test8
-
-#define gen_icache_hit_test(w, shift) do { \
- if (gen_window_check1(dc, RRI##w##_S)) { \
- TCGv_i32 addr = tcg_temp_new_i32(); \
- tcg_gen_movi_i32(cpu_pc, dc->pc); \
- tcg_gen_addi_i32(addr, cpu_R[RRI##w##_S], \
- RRI##w##_IMM##w << shift); \
- gen_helper_itlb_hit_test(cpu_env, addr); \
- tcg_temp_free(addr); \
- }\
- } while (0)
-
-#define gen_icache_hit_test4() gen_icache_hit_test(4, 4)
-#define gen_icache_hit_test8() gen_icache_hit_test(8, 2)
-
- case 12: /*IPFc*/
- HAS_OPTION(XTENSA_OPTION_ICACHE);
- gen_window_check1(dc, RRI8_S);
- break;
-
- case 13: /*ICEc*/
- switch (OP1) {
- case 0: /*IPFLl*/
- HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_icache_hit_test4();
- }
- break;
-
- case 2: /*IHUl*/
- HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_icache_hit_test4();
- }
- break;
-
- case 3: /*IIUl*/
- HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI4_S);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 14: /*IHIc*/
- HAS_OPTION(XTENSA_OPTION_ICACHE);
- gen_icache_hit_test8();
- break;
-
- case 15: /*IIIc*/
- HAS_OPTION(XTENSA_OPTION_ICACHE);
- if (gen_check_privilege(dc)) {
- gen_window_check1(dc, RRI8_S);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
-#undef gen_icache_hit_test
-#undef gen_icache_hit_test4
-#undef gen_icache_hit_test8
-
- case 9: /*L16SI*/
- gen_load_store(ld16s, 1);
- break;
-#undef gen_load_store
-
- case 10: /*MOVI*/
- if (gen_window_check1(dc, RRI8_T)) {
- tcg_gen_movi_i32(cpu_R[RRI8_T],
- RRI8_IMM8 | (RRI8_S << 8) |
- ((RRI8_S & 0x8) ? 0xfffff000 : 0));
- }
- break;
-
-#define gen_load_store_no_hw_align(type) do { \
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) { \
- TCGv_i32 addr = tcg_temp_local_new_i32(); \
- tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2); \
- gen_load_store_alignment(dc, 2, addr, true); \
- tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
- tcg_temp_free(addr); \
- } \
- } while (0)
-
- case 11: /*L32AIy*/
- HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
- gen_load_store_no_hw_align(ld32u); /*TODO acquire?*/
- break;
-
- case 12: /*ADDI*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE);
- }
- break;
-
- case 13: /*ADDMI*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S],
- RRI8_IMM8_SE << 8);
- }
- break;
-
- case 14: /*S32C1Iy*/
- HAS_OPTION(XTENSA_OPTION_CONDITIONAL_STORE);
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- TCGLabel *label = gen_new_label();
- TCGv_i32 tmp = tcg_temp_local_new_i32();
- TCGv_i32 addr = tcg_temp_local_new_i32();
- TCGv_i32 tpc;
-
- tcg_gen_mov_i32(tmp, cpu_R[RRI8_T]);
- tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
- gen_load_store_alignment(dc, 2, addr, true);
-
- tpc = tcg_const_i32(dc->pc);
- gen_helper_check_atomctl(cpu_env, tpc, addr);
- tcg_gen_qemu_ld32u(cpu_R[RRI8_T], addr, dc->cring);
- tcg_gen_brcond_i32(TCG_COND_NE, cpu_R[RRI8_T],
- cpu_SR[SCOMPARE1], label);
-
- tcg_gen_qemu_st32(tmp, addr, dc->cring);
-
- gen_set_label(label);
- tcg_temp_free(tpc);
- tcg_temp_free(addr);
- tcg_temp_free(tmp);
- }
- break;
-
- case 15: /*S32RIy*/
- HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
- gen_load_store_no_hw_align(st32); /*TODO release?*/
- break;
-#undef gen_load_store_no_hw_align
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 3: /*LSCIp*/
- switch (RRI8_R) {
- case 0: /*LSIf*/
- case 4: /*SSIf*/
- case 8: /*LSIUf*/
- case 12: /*SSIUf*/
- HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
- if (gen_window_check1(dc, RRI8_S) &&
- gen_check_cpenable(dc, 0)) {
- TCGv_i32 addr = tcg_temp_new_i32();
- tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
- gen_load_store_alignment(dc, 2, addr, false);
- if (RRI8_R & 0x4) {
- tcg_gen_qemu_st32(cpu_FR[RRI8_T], addr, dc->cring);
- } else {
- tcg_gen_qemu_ld32u(cpu_FR[RRI8_T], addr, dc->cring);
- }
- if (RRI8_R & 0x8) {
- tcg_gen_mov_i32(cpu_R[RRI8_S], addr);
- }
- tcg_temp_free(addr);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- case 4: /*MAC16d*/
- HAS_OPTION(XTENSA_OPTION_MAC16);
- {
- enum {
- MAC16_UMUL = 0x0,
- MAC16_MUL = 0x4,
- MAC16_MULA = 0x8,
- MAC16_MULS = 0xc,
- MAC16_NONE = 0xf,
- } op = OP1 & 0xc;
- bool is_m1_sr = (OP2 & 0x3) == 2;
- bool is_m2_sr = (OP2 & 0xc) == 0;
- uint32_t ld_offset = 0;
-
- if (OP2 > 9) {
- RESERVED();
- }
-
- switch (OP2 & 2) {
- case 0: /*MACI?/MACC?*/
- is_m1_sr = true;
- ld_offset = (OP2 & 1) ? -4 : 4;
-
- if (OP2 >= 8) { /*MACI/MACC*/
- if (OP1 == 0) { /*LDINC/LDDEC*/
- op = MAC16_NONE;
- } else {
- RESERVED();
- }
- } else if (op != MAC16_MULA) { /*MULA.*.*.LDINC/LDDEC*/
- RESERVED();
- }
- break;
-
- case 2: /*MACD?/MACA?*/
- if (op == MAC16_UMUL && OP2 != 7) { /*UMUL only in MACAA*/
- RESERVED();
- }
- break;
- }
-
- if (op != MAC16_NONE) {
- if (!is_m1_sr && !gen_window_check1(dc, RRR_S)) {
- break;
- }
- if (!is_m2_sr && !gen_window_check1(dc, RRR_T)) {
- break;
- }
- }
-
- if (ld_offset && !gen_window_check1(dc, RRR_S)) {
- break;
- }
-
- {
- TCGv_i32 vaddr = tcg_temp_new_i32();
- TCGv_i32 mem32 = tcg_temp_new_i32();
-
- if (ld_offset) {
- tcg_gen_addi_i32(vaddr, cpu_R[RRR_S], ld_offset);
- gen_load_store_alignment(dc, 2, vaddr, false);
- tcg_gen_qemu_ld32u(mem32, vaddr, dc->cring);
- }
- if (op != MAC16_NONE) {
- TCGv_i32 m1 = gen_mac16_m(
- is_m1_sr ? cpu_SR[MR + RRR_X] : cpu_R[RRR_S],
- OP1 & 1, op == MAC16_UMUL);
- TCGv_i32 m2 = gen_mac16_m(
- is_m2_sr ? cpu_SR[MR + 2 + RRR_Y] : cpu_R[RRR_T],
- OP1 & 2, op == MAC16_UMUL);
-
- if (op == MAC16_MUL || op == MAC16_UMUL) {
- tcg_gen_mul_i32(cpu_SR[ACCLO], m1, m2);
- if (op == MAC16_UMUL) {
- tcg_gen_movi_i32(cpu_SR[ACCHI], 0);
- } else {
- tcg_gen_sari_i32(cpu_SR[ACCHI], cpu_SR[ACCLO], 31);
- }
- } else {
- TCGv_i32 lo = tcg_temp_new_i32();
- TCGv_i32 hi = tcg_temp_new_i32();
-
- tcg_gen_mul_i32(lo, m1, m2);
- tcg_gen_sari_i32(hi, lo, 31);
- if (op == MAC16_MULA) {
- tcg_gen_add2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI],
- cpu_SR[ACCLO], cpu_SR[ACCHI],
- lo, hi);
- } else {
- tcg_gen_sub2_i32(cpu_SR[ACCLO], cpu_SR[ACCHI],
- cpu_SR[ACCLO], cpu_SR[ACCHI],
- lo, hi);
- }
- tcg_gen_ext8s_i32(cpu_SR[ACCHI], cpu_SR[ACCHI]);
-
- tcg_temp_free_i32(lo);
- tcg_temp_free_i32(hi);
- }
- tcg_temp_free(m1);
- tcg_temp_free(m2);
- }
- if (ld_offset) {
- tcg_gen_mov_i32(cpu_R[RRR_S], vaddr);
- tcg_gen_mov_i32(cpu_SR[MR + RRR_W], mem32);
- }
- tcg_temp_free(vaddr);
- tcg_temp_free(mem32);
- }
- }
- break;
-
- case 5: /*CALLN*/
- switch (CALL_N) {
- case 0: /*CALL0*/
- tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
- gen_jumpi(dc, (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
- break;
-
- case 1: /*CALL4w*/
- case 2: /*CALL8w*/
- case 3: /*CALL12w*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- if (gen_window_check1(dc, CALL_N << 2)) {
- gen_callwi(dc, CALL_N,
- (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
- }
- break;
+ dc->next_pc = dc->pc + len;
+ for (i = 1; i < len; ++i) {
+ b[i] = cpu_ldub_code(env, dc->pc + i);
+ }
+ xtensa_insnbuf_from_chars(isa, dc->insnbuf, b, len);
+ fmt = xtensa_format_decode(isa, dc->insnbuf);
+ if (fmt == XTENSA_UNDEFINED) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "unrecognized instruction format (pc = %08x)\n",
+ dc->pc);
+ gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
+ return;
+ }
+ slots = xtensa_format_num_slots(isa, fmt);
+ for (slot = 0; slot < slots; ++slot) {
+ xtensa_opcode opc;
+ unsigned opnd, vopnd, opnds;
+ uint32_t raw_arg[MAX_OPCODE_ARGS];
+ uint32_t arg[MAX_OPCODE_ARGS];
+ XtensaOpcodeOps *ops;
+
+ dc->raw_arg = raw_arg;
+
+ xtensa_format_get_slot(isa, fmt, slot, dc->insnbuf, dc->slotbuf);
+ opc = xtensa_opcode_decode(isa, fmt, slot, dc->slotbuf);
+ if (opc == XTENSA_UNDEFINED) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "unrecognized opcode in slot %d (pc = %08x)\n",
+ slot, dc->pc);
+ gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
+ return;
}
- break;
-
- case 6: /*SI*/
- switch (CALL_N) {
- case 0: /*J*/
- gen_jumpi(dc, dc->pc + 4 + CALL_OFFSET_SE, 0);
- break;
-
- case 1: /*BZ*/
- if (gen_window_check1(dc, BRI12_S)) {
- static const TCGCond cond[] = {
- TCG_COND_EQ, /*BEQZ*/
- TCG_COND_NE, /*BNEZ*/
- TCG_COND_LT, /*BLTZ*/
- TCG_COND_GE, /*BGEZ*/
- };
-
- gen_brcondi(dc, cond[BRI12_M & 3], cpu_R[BRI12_S], 0,
- 4 + BRI12_IMM12_SE);
- }
- break;
-
- case 2: /*BI0*/
- if (gen_window_check1(dc, BRI8_S)) {
- static const TCGCond cond[] = {
- TCG_COND_EQ, /*BEQI*/
- TCG_COND_NE, /*BNEI*/
- TCG_COND_LT, /*BLTI*/
- TCG_COND_GE, /*BGEI*/
- };
-
- gen_brcondi(dc, cond[BRI8_M & 3],
- cpu_R[BRI8_S], B4CONST[BRI8_R], 4 + BRI8_IMM8_SE);
- }
- break;
-
- case 3: /*BI1*/
- switch (BRI8_M) {
- case 0: /*ENTRYw*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- {
- TCGv_i32 pc = tcg_const_i32(dc->pc);
- TCGv_i32 s = tcg_const_i32(BRI12_S);
- TCGv_i32 imm = tcg_const_i32(BRI12_IMM12 << 3);
- gen_helper_entry(cpu_env, pc, s, imm);
- tcg_temp_free(imm);
- tcg_temp_free(s);
- tcg_temp_free(pc);
- /* This can change tb->flags, so exit tb */
- gen_jumpi_check_loop_end(dc, -1);
- }
- break;
-
- case 1: /*B1*/
- switch (BRI8_R) {
- case 0: /*BFp*/
- case 1: /*BTp*/
- HAS_OPTION(XTENSA_OPTION_BOOLEAN);
- {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRI8_S);
- gen_brcondi(dc,
- BRI8_R == 1 ? TCG_COND_NE : TCG_COND_EQ,
- tmp, 0, 4 + RRI8_IMM8_SE);
- tcg_temp_free(tmp);
- }
- break;
-
- case 8: /*LOOP*/
- case 9: /*LOOPNEZ*/
- case 10: /*LOOPGTZ*/
- HAS_OPTION(XTENSA_OPTION_LOOP);
- if (gen_window_check1(dc, RRI8_S)) {
- uint32_t lend = dc->pc + RRI8_IMM8 + 4;
- TCGv_i32 tmp = tcg_const_i32(lend);
-
- tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_R[RRI8_S], 1);
- tcg_gen_movi_i32(cpu_SR[LBEG], dc->next_pc);
- gen_helper_wsr_lend(cpu_env, tmp);
- tcg_temp_free(tmp);
-
- if (BRI8_R > 8) {
- TCGLabel *label = gen_new_label();
- tcg_gen_brcondi_i32(
- BRI8_R == 9 ? TCG_COND_NE : TCG_COND_GT,
- cpu_R[RRI8_S], 0, label);
- gen_jumpi(dc, lend, 1);
- gen_set_label(label);
- }
-
- gen_jumpi(dc, dc->next_pc, 0);
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
-
- }
- break;
-
- case 2: /*BLTUI*/
- case 3: /*BGEUI*/
- if (gen_window_check1(dc, BRI8_S)) {
- gen_brcondi(dc, BRI8_M == 2 ? TCG_COND_LTU : TCG_COND_GEU,
- cpu_R[BRI8_S], B4CONSTU[BRI8_R],
- 4 + BRI8_IMM8_SE);
+ opnds = xtensa_opcode_num_operands(isa, opc);
+
+ for (opnd = vopnd = 0; opnd < opnds; ++opnd) {
+ if (xtensa_operand_is_visible(isa, opc, opnd)) {
+ uint32_t v;
+
+ xtensa_operand_get_field(isa, opc, opnd, fmt, slot,
+ dc->slotbuf, &v);
+ xtensa_operand_decode(isa, opc, opnd, &v);
+ raw_arg[vopnd] = v;
+ if (xtensa_operand_is_PCrelative(isa, opc, opnd)) {
+ xtensa_operand_undo_reloc(isa, opc, opnd, &v, dc->pc);
}
- break;
+ arg[vopnd] = v;
+ ++vopnd;
}
- break;
-
}
- break;
-
- case 7: /*B*/
- {
- TCGCond eq_ne = (RRI8_R & 8) ? TCG_COND_NE : TCG_COND_EQ;
-
- switch (RRI8_R & 7) {
- case 0: /*BNONE*/ /*BANY*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
- gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
- tcg_temp_free(tmp);
- }
- break;
-
- case 1: /*BEQ*/ /*BNE*/
- case 2: /*BLT*/ /*BGE*/
- case 3: /*BLTU*/ /*BGEU*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- static const TCGCond cond[] = {
- [1] = TCG_COND_EQ,
- [2] = TCG_COND_LT,
- [3] = TCG_COND_LTU,
- [9] = TCG_COND_NE,
- [10] = TCG_COND_GE,
- [11] = TCG_COND_GEU,
- };
- gen_brcond(dc, cond[RRI8_R], cpu_R[RRI8_S], cpu_R[RRI8_T],
- 4 + RRI8_IMM8_SE);
- }
- break;
-
- case 4: /*BALL*/ /*BNALL*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
- gen_brcond(dc, eq_ne, tmp, cpu_R[RRI8_T],
- 4 + RRI8_IMM8_SE);
- tcg_temp_free(tmp);
- }
- break;
-
- case 5: /*BBC*/ /*BBS*/
- if (gen_window_check2(dc, RRI8_S, RRI8_T)) {
-#ifdef TARGET_WORDS_BIGENDIAN
- TCGv_i32 bit = tcg_const_i32(0x80000000);
-#else
- TCGv_i32 bit = tcg_const_i32(0x00000001);
-#endif
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_andi_i32(tmp, cpu_R[RRI8_T], 0x1f);
-#ifdef TARGET_WORDS_BIGENDIAN
- tcg_gen_shr_i32(bit, bit, tmp);
-#else
- tcg_gen_shl_i32(bit, bit, tmp);
-#endif
- tcg_gen_and_i32(tmp, cpu_R[RRI8_S], bit);
- gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
- tcg_temp_free(tmp);
- tcg_temp_free(bit);
- }
- break;
-
- case 6: /*BBCI*/ /*BBSI*/
- case 7:
- if (gen_window_check1(dc, RRI8_S)) {
- TCGv_i32 tmp = tcg_temp_new_i32();
- tcg_gen_andi_i32(tmp, cpu_R[RRI8_S],
-#ifdef TARGET_WORDS_BIGENDIAN
- 0x80000000 >> (((RRI8_R & 1) << 4) | RRI8_T));
-#else
- 0x00000001 << (((RRI8_R & 1) << 4) | RRI8_T));
-#endif
- gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
- tcg_temp_free(tmp);
- }
- break;
-
- }
- }
- break;
-
-#define gen_narrow_load_store(type) do { \
- if (gen_window_check2(dc, RRRN_S, RRRN_T)) { \
- TCGv_i32 addr = tcg_temp_new_i32(); \
- tcg_gen_addi_i32(addr, cpu_R[RRRN_S], RRRN_R << 2); \
- gen_load_store_alignment(dc, 2, addr, false); \
- tcg_gen_qemu_##type(cpu_R[RRRN_T], addr, dc->cring); \
- tcg_temp_free(addr); \
- } \
- } while (0)
-
- case 8: /*L32I.Nn*/
- gen_narrow_load_store(ld32u);
- break;
-
- case 9: /*S32I.Nn*/
- gen_narrow_load_store(st32);
- break;
-#undef gen_narrow_load_store
-
- case 10: /*ADD.Nn*/
- if (gen_window_check3(dc, RRRN_R, RRRN_S, RRRN_T)) {
- tcg_gen_add_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], cpu_R[RRRN_T]);
- }
- break;
-
- case 11: /*ADDI.Nn*/
- if (gen_window_check2(dc, RRRN_R, RRRN_S)) {
- tcg_gen_addi_i32(cpu_R[RRRN_R], cpu_R[RRRN_S],
- RRRN_T ? RRRN_T : -1);
- }
- break;
-
- case 12: /*ST2n*/
- if (!gen_window_check1(dc, RRRN_S)) {
- break;
- }
- if (RRRN_T < 8) { /*MOVI.Nn*/
- tcg_gen_movi_i32(cpu_R[RRRN_S],
- RRRN_R | (RRRN_T << 4) |
- ((RRRN_T & 6) == 6 ? 0xffffff80 : 0));
- } else { /*BEQZ.Nn*/ /*BNEZ.Nn*/
- TCGCond eq_ne = (RRRN_T & 4) ? TCG_COND_NE : TCG_COND_EQ;
-
- gen_brcondi(dc, eq_ne, cpu_R[RRRN_S], 0,
- 4 + (RRRN_R | ((RRRN_T & 3) << 4)));
- }
- break;
-
- case 13: /*ST3n*/
- switch (RRRN_R) {
- case 0: /*MOV.Nn*/
- if (gen_window_check2(dc, RRRN_S, RRRN_T)) {
- tcg_gen_mov_i32(cpu_R[RRRN_T], cpu_R[RRRN_S]);
- }
- break;
-
- case 15: /*S3*/
- switch (RRRN_T) {
- case 0: /*RET.Nn*/
- gen_jump(dc, cpu_R[0]);
- break;
-
- case 1: /*RETW.Nn*/
- HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
- {
- TCGv_i32 tmp = tcg_const_i32(dc->pc);
- gen_helper_retw(tmp, cpu_env, tmp);
- gen_jump(dc, tmp);
- tcg_temp_free(tmp);
- }
- break;
-
- case 2: /*BREAK.Nn*/
- HAS_OPTION(XTENSA_OPTION_DEBUG);
- if (dc->debug) {
- gen_debug_exception(dc, DEBUGCAUSE_BN);
- }
- break;
-
- case 3: /*NOP.Nn*/
- break;
-
- case 6: /*ILL.Nn*/
- gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
- }
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
+ ops = dc->config->opcode_ops[opc];
+ if (ops) {
+ ops->translate(dc, arg, ops->par);
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "unimplemented opcode '%s' in slot %d (pc = %08x)\n",
+ xtensa_opcode_name(isa, opc), slot, dc->pc);
+ gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
+ return;
}
- break;
-
- default: /*reserved*/
- RESERVED();
- break;
}
-
if (dc->is_jmp == DISAS_NEXT) {
gen_check_loop_end(dc, 0);
}
dc->pc = dc->next_pc;
-
- return;
-
-invalid_opcode:
- qemu_log_mask(LOG_GUEST_ERROR, "INVALID(pc = %08x)\n", dc->pc);
- gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
-#undef HAS_OPTION
}
static inline unsigned xtensa_insn_len(CPUXtensaState *env, DisasContext *dc)
{
uint8_t b0 = cpu_ldub_code(env, dc->pc);
- return xtensa_op0_insn_len(OP0);
+ return xtensa_op0_insn_len(dc, b0);
}
static void gen_ibreak_check(CPUXtensaState *env, DisasContext *dc)
@@ -3153,6 +1084,11 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb)
dc.window = ((tb->flags & XTENSA_TBFLAG_WINDOW_MASK) >>
XTENSA_TBFLAG_WINDOW_SHIFT);
+ if (dc.config->isa) {
+ dc.insnbuf = xtensa_insnbuf_alloc(dc.config->isa);
+ dc.slotbuf = xtensa_insnbuf_alloc(dc.config->isa);
+ }
+
init_litbase(&dc);
init_sar_tracker(&dc);
if (dc.icount) {
@@ -3233,6 +1169,10 @@ done:
if (dc.icount) {
tcg_temp_free(dc.next_icount);
}
+ if (dc.config->isa) {
+ xtensa_insnbuf_free(dc.config->isa, dc.insnbuf);
+ xtensa_insnbuf_free(dc.config->isa, dc.slotbuf);
+ }
if (tb_cflags(tb) & CF_LAST_IO) {
gen_io_end();
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-28 08:04:51 +0000