diff options
| author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-10-22 20:35:54 +0000 |
|---|---|---|
| committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-10-22 20:35:54 +0000 |
| commit | 86753403b282cd1de867e19449c76a3b1c6e47ff (patch) | |
| tree | ca34f68e07b8270c9061067966da1323ec7d4959 /target-arm | |
| parent | f5a5cca35b3d8d198b7f41de3fc543f9bf25d0a6 (diff) | |
Fix ARMv6t2 strex instructions.
Signed-off-by: Paul Brook <paul@codesourcery.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5517 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate.c | 48 |
1 files changed, 45 insertions, 3 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 593d61e547..452016cfa2 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -40,7 +40,7 @@ #define ENABLE_ARCH_6T2 arm_feature(env, ARM_FEATURE_THUMB2) #define ENABLE_ARCH_7 arm_feature(env, ARM_FEATURE_V7) -#define ARCH(x) if (!ENABLE_ARCH_##x) goto illegal_op; +#define ARCH(x) do { if (!ENABLE_ARCH_##x) goto illegal_op; } while(0) /* internal defines */ typedef struct DisasContext { @@ -6225,11 +6225,35 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) rd = (insn >> 12) & 0xf; if (insn & (1 << 23)) { /* load/store exclusive */ + op1 = (insn >> 21) & 0x3; + if (op1) + ARCH(6T2); + else + ARCH(6); gen_movl_T1_reg(s, rn); addr = cpu_T[1]; if (insn & (1 << 20)) { gen_helper_mark_exclusive(cpu_env, cpu_T[1]); - tmp = gen_ld32(addr, IS_USER(s)); + switch (op1) { + case 0: /* ldrex */ + tmp = gen_ld32(addr, IS_USER(s)); + break; + case 1: /* ldrexd */ + tmp = gen_ld32(addr, IS_USER(s)); + store_reg(s, rd, tmp); + tcg_gen_addi_i32(addr, addr, 4); + tmp = gen_ld32(addr, IS_USER(s)); + rd++; + break; + case 2: /* ldrexb */ + tmp = gen_ld8u(addr, IS_USER(s)); + break; + case 3: /* ldrexh */ + tmp = gen_ld16u(addr, IS_USER(s)); + break; + default: + abort(); + } store_reg(s, rd, tmp); } else { int label = gen_new_label(); @@ -6238,7 +6262,25 @@ static void disas_arm_insn(CPUState * env, DisasContext *s) tcg_gen_brcondi_i32(TCG_COND_NE, cpu_T[0], 0, label); tmp = load_reg(s,rm); - gen_st32(tmp, cpu_T[1], IS_USER(s)); + switch (op1) { + case 0: /* strex */ + gen_st32(tmp, addr, IS_USER(s)); + break; + case 1: /* strexd */ + gen_st32(tmp, addr, IS_USER(s)); + tcg_gen_addi_i32(addr, addr, 4); + tmp = load_reg(s, rm + 1); + gen_st32(tmp, addr, IS_USER(s)); + break; + case 2: /* strexb */ + gen_st8(tmp, addr, IS_USER(s)); + break; + case 3: /* strexh */ + gen_st16(tmp, addr, IS_USER(s)); + break; + default: + abort(); + } gen_set_label(label); gen_movl_reg_T0(s, rd); } |