diff options
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/cpu.h | 7 | ||||
| -rw-r--r-- | target-arm/helper.c | 11 | ||||
| -rw-r--r-- | target-arm/helpers.h | 2 | ||||
| -rw-r--r-- | target-arm/translate.c | 75 |
4 files changed, 94 insertions, 1 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index d6cb1162ca..84d7aa9529 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -151,6 +151,10 @@ typedef struct CPUARMState { void *opaque; } cp[15]; + /* Thumb-2 EE state. */ + uint32_t teecr; + uint32_t teehbr; + /* Internal CPU feature flags. */ uint32_t features; @@ -329,7 +333,8 @@ enum arm_features { ARM_FEATURE_NEON, ARM_FEATURE_DIV, ARM_FEATURE_M, /* Microcontroller profile. */ - ARM_FEATURE_OMAPCP /* OMAP specific CP15 ops handling. */ + ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */ + ARM_FEATURE_THUMB2EE }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target-arm/helper.c b/target-arm/helper.c index 8d98ca37c0..6d95303a12 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -88,6 +88,7 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_VFP3); set_feature(env, ARM_FEATURE_NEON); + set_feature(env, ARM_FEATURE_THUMB2EE); env->vfp.xregs[ARM_VFP_FPSID] = 0x410330c0; env->vfp.xregs[ARM_VFP_MVFR0] = 0x11110222; env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100; @@ -110,6 +111,7 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_VFP3); set_feature(env, ARM_FEATURE_NEON); + set_feature(env, ARM_FEATURE_THUMB2EE); set_feature(env, ARM_FEATURE_DIV); break; case ARM_CPUID_TI915T: @@ -2595,3 +2597,12 @@ uint32_t HELPER(rsqrte_u32)(uint32_t a, CPUState *env) tmp = float32_scalbn(tmp, 31, s); return float32_to_int32(tmp, s); } + +void HELPER(set_teecr)(CPUState *env, uint32_t val) +{ + val &= 1; + if (env->teecr != val) { + env->teecr = val; + tb_flush(env); + } +} diff --git a/target-arm/helpers.h b/target-arm/helpers.h index 67207cb49e..01175e157a 100644 --- a/target-arm/helpers.h +++ b/target-arm/helpers.h @@ -453,4 +453,6 @@ DEF_HELPER_3(iwmmxt_muladdsl, i64, i64, i32, i32) DEF_HELPER_3(iwmmxt_muladdsw, i64, i64, i32, i32) DEF_HELPER_3(iwmmxt_muladdswl, i64, i64, i32, i32) +DEF_HELPER_2(set_teecr, void, env, i32) + #include "def-helper.h" diff --git a/target-arm/translate.c b/target-arm/translate.c index 0f6fb01642..2b5e5c8dd5 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -5536,6 +5536,71 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) return 0; } +static int disas_cp14_read(CPUState * env, DisasContext *s, uint32_t insn) +{ + int crn = (insn >> 16) & 0xf; + int crm = insn & 0xf; + int op1 = (insn >> 21) & 7; + int op2 = (insn >> 5) & 7; + int rt = (insn >> 12) & 0xf; + TCGv tmp; + + if (arm_feature(env, ARM_FEATURE_THUMB2EE)) { + if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) { + /* TEECR */ + if (IS_USER(s)) + return 1; + tmp = load_cpu_field(teecr); + store_reg(s, rt, tmp); + return 0; + } + if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) { + /* TEEHBR */ + if (IS_USER(s) && (env->teecr & 1)) + return 1; + tmp = load_cpu_field(teehbr); + store_reg(s, rt, tmp); + return 0; + } + } + fprintf(stderr, "Unknown cp14 read op1:%d crn:%d crm:%d op2:%d\n", + op1, crn, crm, op2); + return 1; +} + +static int disas_cp14_write(CPUState * env, DisasContext *s, uint32_t insn) +{ + int crn = (insn >> 16) & 0xf; + int crm = insn & 0xf; + int op1 = (insn >> 21) & 7; + int op2 = (insn >> 5) & 7; + int rt = (insn >> 12) & 0xf; + TCGv tmp; + + if (arm_feature(env, ARM_FEATURE_THUMB2EE)) { + if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) { + /* TEECR */ + if (IS_USER(s)) + return 1; + tmp = load_reg(s, rt); + gen_helper_set_teecr(cpu_env, tmp); + dead_tmp(tmp); + return 0; + } + if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) { + /* TEEHBR */ + if (IS_USER(s) && (env->teecr & 1)) + return 1; + tmp = load_reg(s, rt); + store_cpu_field(tmp, teehbr); + return 0; + } + } + fprintf(stderr, "Unknown cp14 write op1:%d crn:%d crm:%d op2:%d\n", + op1, crn, crm, op2); + return 1; +} + static int disas_coproc_insn(CPUState * env, DisasContext *s, uint32_t insn) { int cpnum; @@ -5557,9 +5622,19 @@ static int disas_coproc_insn(CPUState * env, DisasContext *s, uint32_t insn) case 10: case 11: return disas_vfp_insn (env, s, insn); + case 14: + /* Coprocessors 7-15 are architecturally reserved by ARM. + Unfortunately Intel decided to ignore this. */ + if (arm_feature(env, ARM_FEATURE_XSCALE)) + goto board; + if (insn & (1 << 20)) + return disas_cp14_read(env, s, insn); + else + return disas_cp14_write(env, s, insn); case 15: return disas_cp15_insn (env, s, insn); default: + board: /* Unknown coprocessor. See if the board has hooked it. */ return disas_cp_insn (env, s, insn); } |