diff options
| author |   Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
|---|---|---|
| committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
| commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
| tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/target-xtensa/translate.c | |
| parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) | |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/target-xtensa/translate.c')
| -rw-r--r-- | qemu/target-xtensa/translate.c | 3219 |
1 files changed, 3219 insertions, 0 deletions
diff --git a/qemu/target-xtensa/translate.c b/qemu/target-xtensa/translate.c new file mode 100644 index 000000000..f2118c24c --- /dev/null +++ b/qemu/target-xtensa/translate.c @@ -0,0 +1,3219 @@ +/* + * Xtensa ISA: + * http://www.tensilica.com/products/literature-docs/documentation/xtensa-isa-databook.htm + * + * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the Open Source and Linux Lab nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> + +#include "cpu.h" +#include "exec/exec-all.h" +#include "disas/disas.h" +#include "tcg-op.h" +#include "qemu/log.h" +#include "sysemu/sysemu.h" +#include "exec/cpu_ldst.h" +#include "exec/semihost.h" + +#include "exec/helper-proto.h" +#include "exec/helper-gen.h" + +#include "trace-tcg.h" + + +typedef struct DisasContext { + const XtensaConfig *config; + TranslationBlock *tb; + uint32_t pc; + uint32_t next_pc; + int cring; + int ring; + uint32_t lbeg; + uint32_t lend; + TCGv_i32 litbase; + int is_jmp; + int singlestep_enabled; + + bool sar_5bit; + bool sar_m32_5bit; + bool sar_m32_allocated; + TCGv_i32 sar_m32; + + uint32_t ccount_delta; + unsigned window; + + bool debug; + bool icount; + TCGv_i32 next_icount; + + unsigned cpenable; +} DisasContext; + +static TCGv_ptr cpu_env; +static TCGv_i32 cpu_pc; +static TCGv_i32 cpu_R[16]; +static TCGv_i32 cpu_FR[16]; +static TCGv_i32 cpu_SR[256]; +static TCGv_i32 cpu_UR[256]; + +#include "exec/gen-icount.h" + +typedef struct XtensaReg { + const char *name; + uint64_t opt_bits; + enum { + SR_R = 1, + SR_W = 2, + SR_X = 4, + SR_RW = 3, + SR_RWX = 7, + } access; +} XtensaReg; + +#define XTENSA_REG_ACCESS(regname, opt, acc) { \ + .name = (regname), \ + .opt_bits = XTENSA_OPTION_BIT(opt), \ + .access = (acc), \ + } + +#define XTENSA_REG(regname, opt) XTENSA_REG_ACCESS(regname, opt, SR_RWX) + +#define XTENSA_REG_BITS_ACCESS(regname, opt, acc) { \ + .name = (regname), \ + .opt_bits = (opt), \ + .access = (acc), \ + } + +#define XTENSA_REG_BITS(regname, opt) \ + XTENSA_REG_BITS_ACCESS(regname, opt, SR_RWX) + +static const XtensaReg sregnames[256] = { + [LBEG] = XTENSA_REG("LBEG", XTENSA_OPTION_LOOP), + [LEND] = XTENSA_REG("LEND", XTENSA_OPTION_LOOP), + [LCOUNT] = XTENSA_REG("LCOUNT", XTENSA_OPTION_LOOP), + [SAR] = XTENSA_REG_BITS("SAR", XTENSA_OPTION_ALL), + [BR] = XTENSA_REG("BR", XTENSA_OPTION_BOOLEAN), + [LITBASE] = XTENSA_REG("LITBASE", XTENSA_OPTION_EXTENDED_L32R), + [SCOMPARE1] = XTENSA_REG("SCOMPARE1", XTENSA_OPTION_CONDITIONAL_STORE), + [ACCLO] = XTENSA_REG("ACCLO", XTENSA_OPTION_MAC16), + [ACCHI] = XTENSA_REG("ACCHI", XTENSA_OPTION_MAC16), + [MR] = XTENSA_REG("MR0", XTENSA_OPTION_MAC16), + [MR + 1] = XTENSA_REG("MR1", XTENSA_OPTION_MAC16), + [MR + 2] = XTENSA_REG("MR2", XTENSA_OPTION_MAC16), + [MR + 3] = XTENSA_REG("MR3", XTENSA_OPTION_MAC16), + [WINDOW_BASE] = XTENSA_REG("WINDOW_BASE", XTENSA_OPTION_WINDOWED_REGISTER), + [WINDOW_START] = XTENSA_REG("WINDOW_START", + XTENSA_OPTION_WINDOWED_REGISTER), + [PTEVADDR] = XTENSA_REG("PTEVADDR", XTENSA_OPTION_MMU), + [RASID] = XTENSA_REG("RASID", XTENSA_OPTION_MMU), + [ITLBCFG] = XTENSA_REG("ITLBCFG", XTENSA_OPTION_MMU), + [DTLBCFG] = XTENSA_REG("DTLBCFG", XTENSA_OPTION_MMU), + [IBREAKENABLE] = XTENSA_REG("IBREAKENABLE", XTENSA_OPTION_DEBUG), + [CACHEATTR] = XTENSA_REG("CACHEATTR", XTENSA_OPTION_CACHEATTR), + [ATOMCTL] = XTENSA_REG("ATOMCTL", XTENSA_OPTION_ATOMCTL), + [IBREAKA] = XTENSA_REG("IBREAKA0", XTENSA_OPTION_DEBUG), + [IBREAKA + 1] = XTENSA_REG("IBREAKA1", XTENSA_OPTION_DEBUG), + [DBREAKA] = XTENSA_REG("DBREAKA0", XTENSA_OPTION_DEBUG), + [DBREAKA + 1] = XTENSA_REG("DBREAKA1", XTENSA_OPTION_DEBUG), + [DBREAKC] = XTENSA_REG("DBREAKC0", XTENSA_OPTION_DEBUG), + [DBREAKC + 1] = XTENSA_REG("DBREAKC1", XTENSA_OPTION_DEBUG), + [CONFIGID0] = XTENSA_REG_BITS_ACCESS("CONFIGID0", XTENSA_OPTION_ALL, SR_R), + [EPC1] = XTENSA_REG("EPC1", XTENSA_OPTION_EXCEPTION), + [EPC1 + 1] = XTENSA_REG("EPC2", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPC1 + 2] = XTENSA_REG("EPC3", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPC1 + 3] = XTENSA_REG("EPC4", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPC1 + 4] = XTENSA_REG("EPC5", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPC1 + 5] = XTENSA_REG("EPC6", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPC1 + 6] = XTENSA_REG("EPC7", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [DEPC] = XTENSA_REG("DEPC", XTENSA_OPTION_EXCEPTION), + [EPS2] = XTENSA_REG("EPS2", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPS2 + 1] = XTENSA_REG("EPS3", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPS2 + 2] = XTENSA_REG("EPS4", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPS2 + 3] = XTENSA_REG("EPS5", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPS2 + 4] = XTENSA_REG("EPS6", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EPS2 + 5] = XTENSA_REG("EPS7", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [CONFIGID1] = XTENSA_REG_BITS_ACCESS("CONFIGID1", XTENSA_OPTION_ALL, SR_R), + [EXCSAVE1] = XTENSA_REG("EXCSAVE1", XTENSA_OPTION_EXCEPTION), + [EXCSAVE1 + 1] = XTENSA_REG("EXCSAVE2", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EXCSAVE1 + 2] = XTENSA_REG("EXCSAVE3", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EXCSAVE1 + 3] = XTENSA_REG("EXCSAVE4", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EXCSAVE1 + 4] = XTENSA_REG("EXCSAVE5", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EXCSAVE1 + 5] = XTENSA_REG("EXCSAVE6", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [EXCSAVE1 + 6] = XTENSA_REG("EXCSAVE7", + XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT), + [CPENABLE] = XTENSA_REG("CPENABLE", XTENSA_OPTION_COPROCESSOR), + [INTSET] = XTENSA_REG_ACCESS("INTSET", XTENSA_OPTION_INTERRUPT, SR_RW), + [INTCLEAR] = XTENSA_REG_ACCESS("INTCLEAR", XTENSA_OPTION_INTERRUPT, SR_W), + [INTENABLE] = XTENSA_REG("INTENABLE", XTENSA_OPTION_INTERRUPT), + [PS] = XTENSA_REG_BITS("PS", XTENSA_OPTION_ALL), + [VECBASE] = XTENSA_REG("VECBASE", XTENSA_OPTION_RELOCATABLE_VECTOR), + [EXCCAUSE] = XTENSA_REG("EXCCAUSE", XTENSA_OPTION_EXCEPTION), + [DEBUGCAUSE] = XTENSA_REG_ACCESS("DEBUGCAUSE", XTENSA_OPTION_DEBUG, SR_R), + [CCOUNT] = XTENSA_REG("CCOUNT", XTENSA_OPTION_TIMER_INTERRUPT), + [PRID] = XTENSA_REG_ACCESS("PRID", XTENSA_OPTION_PROCESSOR_ID, SR_R), + [ICOUNT] = XTENSA_REG("ICOUNT", XTENSA_OPTION_DEBUG), + [ICOUNTLEVEL] = XTENSA_REG("ICOUNTLEVEL", XTENSA_OPTION_DEBUG), + [EXCVADDR] = XTENSA_REG("EXCVADDR", XTENSA_OPTION_EXCEPTION), + [CCOMPARE] = XTENSA_REG("CCOMPARE0", XTENSA_OPTION_TIMER_INTERRUPT), + [CCOMPARE + 1] = XTENSA_REG("CCOMPARE1", + XTENSA_OPTION_TIMER_INTERRUPT), + [CCOMPARE + 2] = XTENSA_REG("CCOMPARE2", + XTENSA_OPTION_TIMER_INTERRUPT), + [MISC] = XTENSA_REG("MISC0", XTENSA_OPTION_MISC_SR), + [MISC + 1] = XTENSA_REG("MISC1", XTENSA_OPTION_MISC_SR), + [MISC + 2] = XTENSA_REG("MISC2", XTENSA_OPTION_MISC_SR), + [MISC + 3] = XTENSA_REG("MISC3", XTENSA_OPTION_MISC_SR), +}; + +static const XtensaReg uregnames[256] = { + [THREADPTR] = XTENSA_REG("THREADPTR", XTENSA_OPTION_THREAD_POINTER), + [FCR] = XTENSA_REG("FCR", XTENSA_OPTION_FP_COPROCESSOR), + [FSR] = XTENSA_REG("FSR", XTENSA_OPTION_FP_COPROCESSOR), +}; + +void xtensa_translate_init(void) +{ + static const char * const regnames[] = { + "ar0", "ar1", "ar2", "ar3", + "ar4", "ar5", "ar6", "ar7", + "ar8", "ar9", "ar10", "ar11", + "ar12", "ar13", "ar14", "ar15", + }; + static const char * const fregnames[] = { + "f0", "f1", "f2", "f3", + "f4", "f5", "f6", "f7", + "f8", "f9", "f10", "f11", + "f12", "f13", "f14", "f15", + }; + int i; + + cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); + cpu_pc = tcg_global_mem_new_i32(TCG_AREG0, + offsetof(CPUXtensaState, pc), "pc"); + + for (i = 0; i < 16; i++) { + cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0, + offsetof(CPUXtensaState, regs[i]), + regnames[i]); + } + + for (i = 0; i < 16; i++) { + cpu_FR[i] = tcg_global_mem_new_i32(TCG_AREG0, + offsetof(CPUXtensaState, fregs[i].f32[FP_F32_LOW]), + fregnames[i]); + } + + for (i = 0; i < 256; ++i) { + if (sregnames[i].name) { + cpu_SR[i] = tcg_global_mem_new_i32(TCG_AREG0, + offsetof(CPUXtensaState, sregs[i]), + sregnames[i].name); + } + } + + for (i = 0; i < 256; ++i) { + if (uregnames[i].name) { + cpu_UR[i] = tcg_global_mem_new_i32(TCG_AREG0, + offsetof(CPUXtensaState, uregs[i]), + uregnames[i].name); + } + } +} + +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); +} + +static void init_litbase(DisasContext *dc) +{ + if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) { + dc->litbase = tcg_temp_local_new_i32(); + tcg_gen_andi_i32(dc->litbase, cpu_SR[LITBASE], 0xfffff000); + } +} + +static void reset_litbase(DisasContext *dc) +{ + if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) { + tcg_temp_free(dc->litbase); + } +} + +static void init_sar_tracker(DisasContext *dc) +{ + dc->sar_5bit = false; + dc->sar_m32_5bit = false; + dc->sar_m32_allocated = false; +} + +static void reset_sar_tracker(DisasContext *dc) +{ + if (dc->sar_m32_allocated) { + tcg_temp_free(dc->sar_m32); + } +} + +static void gen_right_shift_sar(DisasContext *dc, TCGv_i32 sa) +{ + tcg_gen_andi_i32(cpu_SR[SAR], sa, 0x1f); + if (dc->sar_m32_5bit) { + tcg_gen_discard_i32(dc->sar_m32); + } + dc->sar_5bit = true; + dc->sar_m32_5bit = false; +} + +static void gen_left_shift_sar(DisasContext *dc, TCGv_i32 sa) +{ + TCGv_i32 tmp = tcg_const_i32(32); + if (!dc->sar_m32_allocated) { + dc->sar_m32 = tcg_temp_local_new_i32(); + dc->sar_m32_allocated = true; + } + tcg_gen_andi_i32(dc->sar_m32, sa, 0x1f); + tcg_gen_sub_i32(cpu_SR[SAR], tmp, dc->sar_m32); + dc->sar_5bit = false; + dc->sar_m32_5bit = true; + tcg_temp_free(tmp); +} + +static void gen_advance_ccount(DisasContext *dc) +{ + if (dc->ccount_delta > 0) { + TCGv_i32 tmp = tcg_const_i32(dc->ccount_delta); + gen_helper_advance_ccount(cpu_env, tmp); + tcg_temp_free(tmp); + } + dc->ccount_delta = 0; +} + +static void gen_exception(DisasContext *dc, int excp) +{ + TCGv_i32 tmp = tcg_const_i32(excp); + gen_advance_ccount(dc); + gen_helper_exception(cpu_env, tmp); + tcg_temp_free(tmp); +} + +static void gen_exception_cause(DisasContext *dc, uint32_t cause) +{ + TCGv_i32 tpc = tcg_const_i32(dc->pc); + TCGv_i32 tcause = tcg_const_i32(cause); + gen_advance_ccount(dc); + gen_helper_exception_cause(cpu_env, tpc, tcause); + tcg_temp_free(tpc); + tcg_temp_free(tcause); + if (cause == ILLEGAL_INSTRUCTION_CAUSE || + cause == SYSCALL_CAUSE) { + dc->is_jmp = DISAS_UPDATE; + } +} + +static void gen_exception_cause_vaddr(DisasContext *dc, uint32_t cause, + TCGv_i32 vaddr) +{ + TCGv_i32 tpc = tcg_const_i32(dc->pc); + TCGv_i32 tcause = tcg_const_i32(cause); + gen_advance_ccount(dc); + gen_helper_exception_cause_vaddr(cpu_env, tpc, tcause, vaddr); + tcg_temp_free(tpc); + tcg_temp_free(tcause); +} + +static void gen_debug_exception(DisasContext *dc, uint32_t cause) +{ + TCGv_i32 tpc = tcg_const_i32(dc->pc); + TCGv_i32 tcause = tcg_const_i32(cause); + gen_advance_ccount(dc); + gen_helper_debug_exception(cpu_env, tpc, tcause); + tcg_temp_free(tpc); + tcg_temp_free(tcause); + if (cause & (DEBUGCAUSE_IB | DEBUGCAUSE_BI | DEBUGCAUSE_BN)) { + dc->is_jmp = DISAS_UPDATE; + } +} + +static bool gen_check_privilege(DisasContext *dc) +{ + if (dc->cring) { + gen_exception_cause(dc, PRIVILEGED_CAUSE); + dc->is_jmp = DISAS_UPDATE; + return false; + } + return true; +} + +static bool gen_check_cpenable(DisasContext *dc, unsigned cp) +{ + if (option_enabled(dc, XTENSA_OPTION_COPROCESSOR) && + !(dc->cpenable & (1 << cp))) { + gen_exception_cause(dc, COPROCESSOR0_DISABLED + cp); + dc->is_jmp = DISAS_UPDATE; + return false; + } + return true; +} + +static void gen_jump_slot(DisasContext *dc, TCGv dest, int slot) +{ + tcg_gen_mov_i32(cpu_pc, dest); + gen_advance_ccount(dc); + if (dc->icount) { + tcg_gen_mov_i32(cpu_SR[ICOUNT], dc->next_icount); + } + if (dc->singlestep_enabled) { + gen_exception(dc, EXCP_DEBUG); + } else { + if (slot >= 0) { + tcg_gen_goto_tb(slot); + tcg_gen_exit_tb((uintptr_t)dc->tb + slot); + } else { + tcg_gen_exit_tb(0); + } + } + dc->is_jmp = DISAS_UPDATE; +} + +static void gen_jump(DisasContext *dc, TCGv dest) +{ + gen_jump_slot(dc, dest, -1); +} + +static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot) +{ + TCGv_i32 tmp = tcg_const_i32(dest); + if (((dc->tb->pc ^ dest) & TARGET_PAGE_MASK) != 0) { + slot = -1; + } + gen_jump_slot(dc, tmp, slot); + tcg_temp_free(tmp); +} + +static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest, + int slot) +{ + TCGv_i32 tcallinc = tcg_const_i32(callinc); + + tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS], + tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN); + tcg_temp_free(tcallinc); + tcg_gen_movi_i32(cpu_R[callinc << 2], + (callinc << 30) | (dc->next_pc & 0x3fffffff)); + gen_jump_slot(dc, dest, slot); +} + +static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest) +{ + gen_callw_slot(dc, callinc, dest, -1); +} + +static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot) +{ + TCGv_i32 tmp = tcg_const_i32(dest); + if (((dc->tb->pc ^ dest) & TARGET_PAGE_MASK) != 0) { + slot = -1; + } + gen_callw_slot(dc, callinc, tmp, slot); + tcg_temp_free(tmp); +} + +static bool gen_check_loop_end(DisasContext *dc, int slot) +{ + if (option_enabled(dc, XTENSA_OPTION_LOOP) && + !(dc->tb->flags & XTENSA_TBFLAG_EXCM) && + dc->next_pc == dc->lend) { + TCGLabel *label = gen_new_label(); + + gen_advance_ccount(dc); + tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label); + tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1); + gen_jumpi(dc, dc->lbeg, slot); + gen_set_label(label); + gen_jumpi(dc, dc->next_pc, -1); + return true; + } + return false; +} + +static void gen_jumpi_check_loop_end(DisasContext *dc, int slot) +{ + if (!gen_check_loop_end(dc, slot)) { + gen_jumpi(dc, dc->next_pc, slot); + } +} + +static void gen_brcond(DisasContext *dc, TCGCond cond, + TCGv_i32 t0, TCGv_i32 t1, uint32_t offset) +{ + TCGLabel *label = gen_new_label(); + + gen_advance_ccount(dc); + 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); +} + +static void gen_brcondi(DisasContext *dc, TCGCond cond, + TCGv_i32 t0, uint32_t t1, uint32_t offset) +{ + TCGv_i32 tmp = tcg_const_i32(t1); + gen_brcond(dc, cond, t0, tmp, offset); + tcg_temp_free(tmp); +} + +static bool gen_check_sr(DisasContext *dc, uint32_t sr, unsigned access) +{ + if (!xtensa_option_bits_enabled(dc->config, sregnames[sr].opt_bits)) { + if (sregnames[sr].name) { + qemu_log("SR %s is not configured\n", sregnames[sr].name); + } else { + qemu_log("SR %d is not implemented\n", sr); + } + gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE); + return false; + } else if (!(sregnames[sr].access & access)) { + static const char * const access_text[] = { + [SR_R] = "rsr", + [SR_W] = "wsr", + [SR_X] = "xsr", + }; + assert(access < ARRAY_SIZE(access_text) && access_text[access]); + qemu_log("SR %s is not available for %s\n", sregnames[sr].name, + access_text[access]); + gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE); + return false; + } + return true; +} + +static void gen_rsr_ccount(DisasContext *dc, TCGv_i32 d, uint32_t sr) +{ + gen_advance_ccount(dc); + tcg_gen_mov_i32(d, cpu_SR[sr]); +} + +static void gen_rsr_ptevaddr(DisasContext *dc, TCGv_i32 d, uint32_t sr) +{ + tcg_gen_shri_i32(d, cpu_SR[EXCVADDR], 10); + tcg_gen_or_i32(d, d, cpu_SR[sr]); + tcg_gen_andi_i32(d, d, 0xfffffffc); +} + +static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr) +{ + static void (* const rsr_handler[256])(DisasContext *dc, + TCGv_i32 d, uint32_t sr) = { + [CCOUNT] = gen_rsr_ccount, + [PTEVADDR] = gen_rsr_ptevaddr, + }; + + if (rsr_handler[sr]) { + rsr_handler[sr](dc, d, sr); + } else { + tcg_gen_mov_i32(d, cpu_SR[sr]); + } +} + +static void gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + gen_helper_wsr_lbeg(cpu_env, s); + gen_jumpi_check_loop_end(dc, 0); +} + +static void gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + gen_helper_wsr_lend(cpu_env, s); + gen_jumpi_check_loop_end(dc, 0); +} + +static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f); + if (dc->sar_m32_5bit) { + tcg_gen_discard_i32(dc->sar_m32); + } + dc->sar_5bit = false; + dc->sar_m32_5bit = false; +} + +static void gen_wsr_br(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + tcg_gen_andi_i32(cpu_SR[sr], s, 0xffff); +} + +static void gen_wsr_litbase(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + tcg_gen_andi_i32(cpu_SR[sr], s, 0xfffff001); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_acchi(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + tcg_gen_ext8s_i32(cpu_SR[sr], s); +} + +static void gen_wsr_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + gen_helper_wsr_windowbase(cpu_env, v); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_windowstart(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, (1 << dc->config->nareg / 4) - 1); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_ptevaddr(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0xffc00000); +} + +static void gen_wsr_rasid(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + gen_helper_wsr_rasid(cpu_env, v); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_tlbcfg(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0x01130000); +} + +static void gen_wsr_ibreakenable(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + gen_helper_wsr_ibreakenable(cpu_env, v); + gen_jumpi_check_loop_end(dc, 0); +} + +static void gen_wsr_atomctl(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0x3f); +} + +static void gen_wsr_ibreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + unsigned id = sr - IBREAKA; + + if (id < dc->config->nibreak) { + TCGv_i32 tmp = tcg_const_i32(id); + gen_helper_wsr_ibreaka(cpu_env, tmp, v); + tcg_temp_free(tmp); + gen_jumpi_check_loop_end(dc, 0); + } +} + +static void gen_wsr_dbreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + unsigned id = sr - DBREAKA; + + if (id < dc->config->ndbreak) { + TCGv_i32 tmp = tcg_const_i32(id); + gen_helper_wsr_dbreaka(cpu_env, tmp, v); + tcg_temp_free(tmp); + } +} + +static void gen_wsr_dbreakc(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + unsigned id = sr - DBREAKC; + + if (id < dc->config->ndbreak) { + TCGv_i32 tmp = tcg_const_i32(id); + gen_helper_wsr_dbreakc(cpu_env, tmp, v); + tcg_temp_free(tmp); + } +} + +static void gen_wsr_cpenable(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0xff); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_intset(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, + dc->config->inttype_mask[INTTYPE_SOFTWARE]); + gen_helper_check_interrupts(cpu_env); + gen_jumpi_check_loop_end(dc, 0); +} + +static void gen_wsr_intclear(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + TCGv_i32 tmp = tcg_temp_new_i32(); + + tcg_gen_andi_i32(tmp, v, + dc->config->inttype_mask[INTTYPE_EDGE] | + dc->config->inttype_mask[INTTYPE_NMI] | + dc->config->inttype_mask[INTTYPE_SOFTWARE]); + tcg_gen_andc_i32(cpu_SR[INTSET], cpu_SR[INTSET], tmp); + tcg_temp_free(tmp); + gen_helper_check_interrupts(cpu_env); +} + +static void gen_wsr_intenable(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_mov_i32(cpu_SR[sr], v); + gen_helper_check_interrupts(cpu_env); + gen_jumpi_check_loop_end(dc, 0); +} + +static void gen_wsr_ps(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + uint32_t mask = PS_WOE | PS_CALLINC | PS_OWB | + PS_UM | PS_EXCM | PS_INTLEVEL; + + if (option_enabled(dc, XTENSA_OPTION_MMU)) { + mask |= PS_RING; + } + tcg_gen_andi_i32(cpu_SR[sr], v, mask); + gen_helper_check_interrupts(cpu_env); + /* This can change mmu index and tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_icount(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + if (dc->icount) { + tcg_gen_mov_i32(dc->next_icount, v); + } else { + tcg_gen_mov_i32(cpu_SR[sr], v); + } +} + +static void gen_wsr_icountlevel(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + tcg_gen_andi_i32(cpu_SR[sr], v, 0xf); + /* This can change tb->flags, so exit tb */ + gen_jumpi_check_loop_end(dc, -1); +} + +static void gen_wsr_ccompare(DisasContext *dc, uint32_t sr, TCGv_i32 v) +{ + uint32_t id = sr - CCOMPARE; + if (id < dc->config->nccompare) { + uint32_t int_bit = 1 << dc->config->timerint[id]; + gen_advance_ccount(dc); + tcg_gen_mov_i32(cpu_SR[sr], v); + tcg_gen_andi_i32(cpu_SR[INTSET], cpu_SR[INTSET], ~int_bit); + gen_helper_check_interrupts(cpu_env); + } +} + +static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + static void (* const wsr_handler[256])(DisasContext *dc, + uint32_t sr, TCGv_i32 v) = { + [LBEG] = gen_wsr_lbeg, + [LEND] = gen_wsr_lend, + [SAR] = gen_wsr_sar, + [BR] = gen_wsr_br, + [LITBASE] = gen_wsr_litbase, + [ACCHI] = gen_wsr_acchi, + [WINDOW_BASE] = gen_wsr_windowbase, + [WINDOW_START] = gen_wsr_windowstart, + [PTEVADDR] = gen_wsr_ptevaddr, + [RASID] = gen_wsr_rasid, + [ITLBCFG] = gen_wsr_tlbcfg, + [DTLBCFG] = gen_wsr_tlbcfg, + [IBREAKENABLE] = gen_wsr_ibreakenable, + [ATOMCTL] = gen_wsr_atomctl, + [IBREAKA] = gen_wsr_ibreaka, + [IBREAKA + 1] = gen_wsr_ibreaka, + [DBREAKA] = gen_wsr_dbreaka, + [DBREAKA + 1] = gen_wsr_dbreaka, + [DBREAKC] = gen_wsr_dbreakc, + [DBREAKC + 1] = gen_wsr_dbreakc, + [CPENABLE] = gen_wsr_cpenable, + [INTSET] = gen_wsr_intset, + [INTCLEAR] = gen_wsr_intclear, + [INTENABLE] = gen_wsr_intenable, + [PS] = gen_wsr_ps, + [ICOUNT] = gen_wsr_icount, + [ICOUNTLEVEL] = gen_wsr_icountlevel, + [CCOMPARE] = gen_wsr_ccompare, + [CCOMPARE + 1] = gen_wsr_ccompare, + [CCOMPARE + 2] = gen_wsr_ccompare, + }; + + if (wsr_handler[sr]) { + wsr_handler[sr](dc, sr, s); + } else { + tcg_gen_mov_i32(cpu_SR[sr], s); + } +} + +static void gen_wur(uint32_t ur, TCGv_i32 s) +{ + switch (ur) { + case FCR: + gen_helper_wur_fcr(cpu_env, s); + break; + + case FSR: + tcg_gen_andi_i32(cpu_UR[ur], s, 0xffffff80); + break; + + default: + tcg_gen_mov_i32(cpu_UR[ur], s); + break; + } +} + +static void gen_load_store_alignment(DisasContext *dc, int shift, + TCGv_i32 addr, bool no_hw_alignment) +{ + if (!option_enabled(dc, XTENSA_OPTION_UNALIGNED_EXCEPTION)) { + tcg_gen_andi_i32(addr, addr, ~0 << shift); + } else if (option_enabled(dc, XTENSA_OPTION_HW_ALIGNMENT) && + no_hw_alignment) { + TCGLabel *label = gen_new_label(); + TCGv_i32 tmp = tcg_temp_new_i32(); + tcg_gen_andi_i32(tmp, addr, ~(~0 << shift)); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label); + gen_exception_cause_vaddr(dc, LOAD_STORE_ALIGNMENT_CAUSE, addr); + gen_set_label(label); + tcg_temp_free(tmp); + } +} + +static void gen_waiti(DisasContext *dc, uint32_t imm4) +{ + TCGv_i32 pc = tcg_const_i32(dc->next_pc); + TCGv_i32 intlevel = tcg_const_i32(imm4); + gen_advance_ccount(dc); + gen_helper_waiti(cpu_env, pc, intlevel); + tcg_temp_free(pc); + tcg_temp_free(intlevel); +} + +static bool gen_window_check1(DisasContext *dc, unsigned r1) +{ + if (r1 / 4 > dc->window) { + TCGv_i32 pc = tcg_const_i32(dc->pc); + TCGv_i32 w = tcg_const_i32(r1 / 4); + + gen_advance_ccount(dc); + gen_helper_window_check(cpu_env, pc, w); + dc->is_jmp = DISAS_UPDATE; + return false; + } + return true; +} + +static bool gen_window_check2(DisasContext *dc, unsigned r1, unsigned r2) +{ + return gen_window_check1(dc, r1 > r2 ? r1 : r2); +} + +static bool gen_window_check3(DisasContext *dc, unsigned r1, unsigned r2, + unsigned r3) +{ + return gen_window_check2(dc, r1, r2 > r3 ? r2 : r3); +} + +static TCGv_i32 gen_mac16_m(TCGv_i32 v, bool hi, bool is_unsigned) +{ + TCGv_i32 m = tcg_temp_new_i32(); + + if (hi) { + (is_unsigned ? tcg_gen_shri_i32 : tcg_gen_sari_i32)(m, v, 16); + } else { + (is_unsigned ? tcg_gen_ext16u_i32 : tcg_gen_ext16s_i32)(m, v); + } + return m; +} + +static inline unsigned xtensa_op0_insn_len(unsigned op0) +{ + return op0 >= 8 ? 2 : 3; +} + +static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) +{ +#define HAS_OPTION_BITS(opt) do { \ + if (!option_bits_enabled(dc, opt)) { \ + qemu_log("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("TBD(pc = %08x): %s:%d\n", dc->pc, __FILE__, __LINE__) +#define RESERVED() do { \ + qemu_log("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; + + default: + RESERVED(); + } + 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_advance_ccount(dc); + 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_advance_ccount(dc); + 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_helper_check_interrupts(cpu_env); + 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_helper_check_interrupts(cpu_env); + 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_helper_check_interrupts(cpu_env); + gen_jump(dc, cpu_SR[EPC1 + RRR_S - 1]); + } + } else { + qemu_log("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("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_helper_check_interrupts(cpu_env); + 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*/ + TBD(); + break; + + case 7: /*WER*/ + TBD(); + 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)) { + gen_helper_nsa(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)) { + gen_helper_nsau(cpu_R[RRR_T], cpu_R[RRR_S]); + } + 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(); + + tcg_gen_mov_i32(tmp, cpu_R[RRR_T]); + gen_rsr(dc, cpu_R[RRR_T], RSR_SR); + gen_wsr(dc, RSR_SR, tmp); + tcg_temp_free(tmp); + } + 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_trunc_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)) { + gen_rsr(dc, cpu_R[RRR_T], RSR_SR); + } + 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("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("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)) { + 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)) { + 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; + + default: + RESERVED(); + break; + } + break; + + case 10: /*FP0*/ + 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*/ + 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); + + gen_advance_ccount(dc); + 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; + } + 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); + gen_advance_ccount(dc); + 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); + } + break; + } + 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_advance_ccount(dc); + 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; + } + 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("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); +} + +static void check_breakpoint(CPUXtensaState *env, DisasContext *dc) +{ + CPUState *cs = CPU(xtensa_env_get_cpu(env)); + CPUBreakpoint *bp; + + if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) { + QTAILQ_FOREACH(bp, &cs->breakpoints, entry) { + if (bp->pc == dc->pc) { + tcg_gen_movi_i32(cpu_pc, dc->pc); + gen_exception(dc, EXCP_DEBUG); + dc->is_jmp = DISAS_UPDATE; + } + } + } +} + +static void gen_ibreak_check(CPUXtensaState *env, DisasContext *dc) +{ + unsigned i; + + for (i = 0; i < dc->config->nibreak; ++i) { + if ((env->sregs[IBREAKENABLE] & (1 << i)) && + env->sregs[IBREAKA + i] == dc->pc) { + gen_debug_exception(dc, DEBUGCAUSE_IB); + break; + } + } +} + +static inline +void gen_intermediate_code_internal(XtensaCPU *cpu, + TranslationBlock *tb, bool search_pc) +{ + CPUState *cs = CPU(cpu); + CPUXtensaState *env = &cpu->env; + DisasContext dc; + int insn_count = 0; + int j, lj = -1; + int max_insns = tb->cflags & CF_COUNT_MASK; + uint32_t pc_start = tb->pc; + uint32_t next_page_start = + (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; + + if (max_insns == 0) { + max_insns = CF_COUNT_MASK; + } + + dc.config = env->config; + dc.singlestep_enabled = cs->singlestep_enabled; + dc.tb = tb; + dc.pc = pc_start; + dc.ring = tb->flags & XTENSA_TBFLAG_RING_MASK; + dc.cring = (tb->flags & XTENSA_TBFLAG_EXCM) ? 0 : dc.ring; + dc.lbeg = env->sregs[LBEG]; + dc.lend = env->sregs[LEND]; + dc.is_jmp = DISAS_NEXT; + dc.ccount_delta = 0; + dc.debug = tb->flags & XTENSA_TBFLAG_DEBUG; + dc.icount = tb->flags & XTENSA_TBFLAG_ICOUNT; + dc.cpenable = (tb->flags & XTENSA_TBFLAG_CPENABLE_MASK) >> + XTENSA_TBFLAG_CPENABLE_SHIFT; + dc.window = ((tb->flags & XTENSA_TBFLAG_WINDOW_MASK) >> + XTENSA_TBFLAG_WINDOW_SHIFT); + + init_litbase(&dc); + init_sar_tracker(&dc); + if (dc.icount) { + dc.next_icount = tcg_temp_local_new_i32(); + } + + gen_tb_start(tb); + + if (tb->flags & XTENSA_TBFLAG_EXCEPTION) { + tcg_gen_movi_i32(cpu_pc, dc.pc); + gen_exception(&dc, EXCP_DEBUG); + } + + do { + check_breakpoint(env, &dc); + + if (search_pc) { + j = tcg_op_buf_count(); + if (lj < j) { + lj++; + while (lj < j) { + tcg_ctx.gen_opc_instr_start[lj++] = 0; + } + } + tcg_ctx.gen_opc_pc[lj] = dc.pc; + tcg_ctx.gen_opc_instr_start[lj] = 1; + tcg_ctx.gen_opc_icount[lj] = insn_count; + } + + if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) { + tcg_gen_debug_insn_start(dc.pc); + } + + ++dc.ccount_delta; + + if (insn_count + 1 == max_insns && (tb->cflags & CF_LAST_IO)) { + gen_io_start(); + } + + if (dc.icount) { + TCGLabel *label = gen_new_label(); + + tcg_gen_addi_i32(dc.next_icount, cpu_SR[ICOUNT], 1); + tcg_gen_brcondi_i32(TCG_COND_NE, dc.next_icount, 0, label); + tcg_gen_mov_i32(dc.next_icount, cpu_SR[ICOUNT]); + if (dc.debug) { + gen_debug_exception(&dc, DEBUGCAUSE_IC); + } + gen_set_label(label); + } + + if (dc.debug) { + gen_ibreak_check(env, &dc); + } + + disas_xtensa_insn(env, &dc); + ++insn_count; + if (dc.icount) { + tcg_gen_mov_i32(cpu_SR[ICOUNT], dc.next_icount); + } + if (cs->singlestep_enabled) { + tcg_gen_movi_i32(cpu_pc, dc.pc); + gen_exception(&dc, EXCP_DEBUG); + break; + } + } while (dc.is_jmp == DISAS_NEXT && + insn_count < max_insns && + dc.pc < next_page_start && + dc.pc + xtensa_insn_len(env, &dc) <= next_page_start && + !tcg_op_buf_full()); + + reset_litbase(&dc); + reset_sar_tracker(&dc); + if (dc.icount) { + tcg_temp_free(dc.next_icount); + } + + if (tb->cflags & CF_LAST_IO) { + gen_io_end(); + } + + if (dc.is_jmp == DISAS_NEXT) { + gen_jumpi(&dc, dc.pc, 0); + } + gen_tb_end(tb, insn_count); + +#ifdef DEBUG_DISAS + if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { + qemu_log("----------------\n"); + qemu_log("IN: %s\n", lookup_symbol(pc_start)); + log_target_disas(cs, pc_start, dc.pc - pc_start, 0); + qemu_log("\n"); + } +#endif + if (search_pc) { + j = tcg_op_buf_count(); + memset(tcg_ctx.gen_opc_instr_start + lj + 1, 0, + (j - lj) * sizeof(tcg_ctx.gen_opc_instr_start[0])); + } else { + tb->size = dc.pc - pc_start; + tb->icount = insn_count; + } +} + +void gen_intermediate_code(CPUXtensaState *env, TranslationBlock *tb) +{ + gen_intermediate_code_internal(xtensa_env_get_cpu(env), tb, false); +} + +void gen_intermediate_code_pc(CPUXtensaState *env, TranslationBlock *tb) +{ + gen_intermediate_code_internal(xtensa_env_get_cpu(env), tb, true); +} + +void xtensa_cpu_dump_state(CPUState *cs, FILE *f, + fprintf_function cpu_fprintf, int flags) +{ + XtensaCPU *cpu = XTENSA_CPU(cs); + CPUXtensaState *env = &cpu->env; + int i, j; + + cpu_fprintf(f, "PC=%08x\n\n", env->pc); + + for (i = j = 0; i < 256; ++i) { + if (xtensa_option_bits_enabled(env->config, sregnames[i].opt_bits)) { + cpu_fprintf(f, "%12s=%08x%c", sregnames[i].name, env->sregs[i], + (j++ % 4) == 3 ? '\n' : ' '); + } + } + + cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n"); + + for (i = j = 0; i < 256; ++i) { + if (xtensa_option_bits_enabled(env->config, uregnames[i].opt_bits)) { + cpu_fprintf(f, "%s=%08x%c", uregnames[i].name, env->uregs[i], + (j++ % 4) == 3 ? '\n' : ' '); + } + } + + cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n"); + + for (i = 0; i < 16; ++i) { + cpu_fprintf(f, " A%02d=%08x%c", i, env->regs[i], + (i % 4) == 3 ? '\n' : ' '); + } + + cpu_fprintf(f, "\n"); + + for (i = 0; i < env->config->nareg; ++i) { + cpu_fprintf(f, "AR%02d=%08x%c", i, env->phys_regs[i], + (i % 4) == 3 ? '\n' : ' '); + } + + if (xtensa_option_enabled(env->config, XTENSA_OPTION_FP_COPROCESSOR)) { + cpu_fprintf(f, "\n"); + + for (i = 0; i < 16; ++i) { + cpu_fprintf(f, "F%02d=%08x (%+10.8e)%c", i, + float32_val(env->fregs[i].f32[FP_F32_LOW]), + *(float *)(env->fregs[i].f32 + FP_F32_LOW), + (i % 2) == 1 ? '\n' : ' '); + } + } +} + +void restore_state_to_opc(CPUXtensaState *env, TranslationBlock *tb, int pc_pos) +{ + env->pc = tcg_ctx.gen_opc_pc[pc_pos]; +} |