diff options
| author | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2014-10-17 17:46:29 +0100 |
|---|---|---|
| committer | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2014-12-10 11:13:45 +0000 |
| commit | 83c1bb1868848912f3d5516880e937cb247dfcd1 (patch) | |
| tree | c35be1958637f49f14272a562a994e206ce422bf /target-tricore | |
| parent | fc2ef4a391c39688d35c7f78cec6a20d552e5a3b (diff) | |
| download | qemu-83c1bb1868848912f3d5516880e937cb247dfcd1.tar.gz | |
target-tricore: Add instructions of BRN opcode format
Add instructions of BRN opcode format.
Add MASK_OP_BRN_DISP15_SEXT.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tricore')
| -rw-r--r-- | target-tricore/translate.c | 26 | ||||
| -rw-r--r-- | target-tricore/tricore-opcodes.h | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/target-tricore/translate.c b/target-tricore/translate.c index 789f005088..428a41e8e8 100644 --- a/target-tricore/translate.c +++ b/target-tricore/translate.c @@ -568,6 +568,7 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1, int r2 , int32_t constant , int32_t offset) { TCGv temp; + int n; switch (opc) { /* SB-format jumps */ @@ -706,6 +707,20 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1, } tcg_temp_free(temp); break; +/* BRN format */ + case OPCM_32_BRN_JTT: + n = MASK_OP_BRN_N(ctx->opcode); + + temp = tcg_temp_new(); + tcg_gen_andi_tl(temp, cpu_gpr_d[r1], (1 << n)); + + if (MASK_OP_BRN_OP2(ctx->opcode) == OPC2_32_BRN_JNZ_T) { + gen_branch_condi(ctx, TCG_COND_NE, temp, 0, offset); + } else { + gen_branch_condi(ctx, TCG_COND_EQ, temp, 0, offset); + } + tcg_temp_free(temp); + break; default: printf("Branch Error at %x\n", ctx->pc); } @@ -2371,6 +2386,11 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx) op1 = MASK_OP_MAJOR(ctx->opcode); + /* handle JNZ.T opcode only being 6 bit long */ + if (unlikely((op1 & 0x3f) == OPCM_32_BRN_JTT)) { + op1 = OPCM_32_BRN_JTT; + } + switch (op1) { /* ABS-format */ case OPCM_32_ABS_LDW: @@ -2504,6 +2524,12 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx) r1 = MASK_OP_BRC_S1(ctx->opcode); gen_compute_branch(ctx, op1, r1, 0, const4, address); break; +/* BRN Format */ + case OPCM_32_BRN_JTT: + address = MASK_OP_BRN_DISP15_SEXT(ctx->opcode); + r1 = MASK_OP_BRN_S1(ctx->opcode); + gen_compute_branch(ctx, op1, r1, 0, 0, address); + break; } } diff --git a/target-tricore/tricore-opcodes.h b/target-tricore/tricore-opcodes.h index 2d18624bef..3622d388e2 100644 --- a/target-tricore/tricore-opcodes.h +++ b/target-tricore/tricore-opcodes.h @@ -132,6 +132,7 @@ /* BRN Format */ #define MASK_OP_BRN_OP2(op) MASK_BITS_SHIFT(op, 31, 31) #define MASK_OP_BRN_DISP15(op) MASK_BITS_SHIFT(op, 16, 30) +#define MASK_OP_BRN_DISP15_SEXT(op) MASK_BITS_SHIFT_SEXT(op, 16, 30) #define MASK_OP_BRN_N(op) (MASK_BITS_SHIFT(op, 12, 15) + \ (MASK_BITS_SHIFT(op, 7, 7) << 4)) #define MASK_OP_BRN_S1(op) MASK_BITS_SHIFT(op, 8, 11) |