diff options
Diffstat (limited to 'target-xtensa')
| -rw-r--r-- | target-xtensa/cpu.h | 6 | ||||
| -rw-r--r-- | target-xtensa/helper.c | 1 | ||||
| -rw-r--r-- | target-xtensa/translate.c | 37 |
3 files changed, 40 insertions, 4 deletions
diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h index 97badf26c8..1283fd904d 100644 --- a/target-xtensa/cpu.h +++ b/target-xtensa/cpu.h @@ -110,6 +110,7 @@ enum { LEND = 1, LCOUNT = 2, SAR = 3, + LITBASE = 5, SCOMPARE1 = 12, WINDOW_BASE = 72, WINDOW_START = 73, @@ -274,6 +275,7 @@ static inline int cpu_mmu_index(CPUState *env) #define XTENSA_TBFLAG_RING_MASK 0x3 #define XTENSA_TBFLAG_EXCM 0x4 +#define XTENSA_TBFLAG_LITBASE 0x8 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, target_ulong *cs_base, int *flags) @@ -285,6 +287,10 @@ static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, if (env->sregs[PS] & PS_EXCM) { *flags |= XTENSA_TBFLAG_EXCM; } + if (xtensa_option_enabled(env->config, XTENSA_OPTION_EXTENDED_L32R) && + (env->sregs[LITBASE] & 1)) { + *flags |= XTENSA_TBFLAG_LITBASE; + } } #include "cpu-all.h" diff --git a/target-xtensa/helper.c b/target-xtensa/helper.c index 4f8693448e..074207f5cf 100644 --- a/target-xtensa/helper.c +++ b/target-xtensa/helper.c @@ -38,6 +38,7 @@ void cpu_reset(CPUXtensaState *env) { env->exception_taken = 0; env->pc = env->config->exception_vector[EXC_RESET]; + env->sregs[LITBASE] &= ~1; env->sregs[PS] = 0x1f; } diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 8f4500750c..07a737a90c 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -49,6 +49,7 @@ typedef struct DisasContext { int ring; uint32_t lbeg; uint32_t lend; + TCGv_i32 litbase; int is_jmp; int singlestep_enabled; @@ -71,6 +72,7 @@ static const char * const sregnames[256] = { [LEND] = "LEND", [LCOUNT] = "LCOUNT", [SAR] = "SAR", + [LITBASE] = "LITBASE", [SCOMPARE1] = "SCOMPARE1", [WINDOW_BASE] = "WINDOW_BASE", [WINDOW_START] = "WINDOW_START", @@ -132,6 +134,21 @@ 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; @@ -332,6 +349,13 @@ static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s) dc->sar_m32_5bit = false; } +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_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v) { gen_helper_wsr_windowbase(v); @@ -357,6 +381,7 @@ static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s) [LBEG] = gen_wsr_lbeg, [LEND] = gen_wsr_lend, [SAR] = gen_wsr_sar, + [LITBASE] = gen_wsr_litbase, [WINDOW_BASE] = gen_wsr_windowbase, [PS] = gen_wsr_ps, }; @@ -1298,11 +1323,13 @@ static void disas_xtensa_insn(DisasContext *dc) case 1: /*L32R*/ { TCGv_i32 tmp = tcg_const_i32( - (0xfffc0000 | (RI16_IMM16 << 2)) + - ((dc->pc + 3) & ~3)); - - /* no ext L32R */ + ((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); } @@ -1834,6 +1861,7 @@ static void gen_intermediate_code_internal( dc.lend = env->sregs[LEND]; dc.is_jmp = DISAS_NEXT; + init_litbase(&dc); init_sar_tracker(&dc); gen_icount_start(); @@ -1876,6 +1904,7 @@ static void gen_intermediate_code_internal( dc.pc < next_page_start && gen_opc_ptr < gen_opc_end); + reset_litbase(&dc); reset_sar_tracker(&dc); if (dc.is_jmp == DISAS_NEXT) { |