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| author | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2014-09-01 12:59:57 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-09-01 14:49:21 +0100 |
| commit | a47b50db609f95edf5b2f964a7a8087f094cfcfa (patch) | |
| tree | d1175c3e4fcee0f82a5780aeea729f4b6e6fb367 /target-tricore | |
| parent | 70b0226250db5ea5ec6c0bbc13514a3e27081c28 (diff) | |
| download | qemu-a47b50db609f95edf5b2f964a7a8087f094cfcfa.zip qemu-a47b50db609f95edf5b2f964a7a8087f094cfcfa.tar.gz qemu-a47b50db609f95edf5b2f964a7a8087f094cfcfa.tar.bz2 | |
target-tricore: Add instructions of SBR opcode format
Add instructions of SBR opcode format.
Add gen_loop micro-op generator function.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1409572800-4116-13-git-send-email-kbastian@mail.uni-paderborn.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-tricore')
| -rw-r--r-- | target-tricore/translate.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/target-tricore/translate.c b/target-tricore/translate.c index 1bd2642..74db70d 100644 --- a/target-tricore/translate.c +++ b/target-tricore/translate.c @@ -388,6 +388,18 @@ static inline void gen_branch_condi(DisasContext *ctx, TCGCond cond, TCGv r1, tcg_temp_free(temp); } +static void gen_loop(DisasContext *ctx, int r1, int32_t offset) +{ + int l1; + l1 = gen_new_label(); + + tcg_gen_subi_tl(cpu_gpr_a[r1], cpu_gpr_a[r1], 1); + tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_gpr_a[r1], -1, l1); + gen_goto_tb(ctx, 1, ctx->pc + offset); + gen_set_label(l1); + gen_goto_tb(ctx, 0, ctx->next_pc); +} + static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1, int r2 , int32_t constant , int32_t offset) { @@ -429,8 +441,44 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1, gen_branch_condi(ctx, TCG_COND_NE, temp, 0, offset); tcg_temp_free(temp); break; +/* SBR-format jumps */ + case OPC1_16_SBR_JEQ: + gen_branch_cond(ctx, TCG_COND_EQ, cpu_gpr_d[r1], cpu_gpr_d[15], + offset); + break; + case OPC1_16_SBR_JNE: + gen_branch_cond(ctx, TCG_COND_NE, cpu_gpr_d[r1], cpu_gpr_d[15], + offset); + break; + case OPC1_16_SBR_JNZ: + gen_branch_condi(ctx, TCG_COND_NE, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JNZ_A: + gen_branch_condi(ctx, TCG_COND_NE, cpu_gpr_a[r1], 0, offset); + break; + case OPC1_16_SBR_JGEZ: + gen_branch_condi(ctx, TCG_COND_GE, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JGTZ: + gen_branch_condi(ctx, TCG_COND_GT, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JLEZ: + gen_branch_condi(ctx, TCG_COND_LE, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JLTZ: + gen_branch_condi(ctx, TCG_COND_LT, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JZ: + gen_branch_condi(ctx, TCG_COND_EQ, cpu_gpr_d[r1], 0, offset); + break; + case OPC1_16_SBR_JZ_A: + gen_branch_condi(ctx, TCG_COND_EQ, cpu_gpr_a[r1], 0, offset); + break; + case OPC1_16_SBR_LOOP: + gen_loop(ctx, r1, offset * 2 - 32); + break; default: - printf("Branch Error at %x\n", ctx->pc); + printf("Branch Error at %x\n", ctx->pc); } ctx->bstate = BS_BRANCH; } @@ -752,6 +800,22 @@ static void decode_16Bit_opc(CPUTriCoreState *env, DisasContext *ctx) const16 = MASK_OP_SBRN_N(ctx->opcode); gen_compute_branch(ctx, op1, 0, 0, const16, address); break; +/* SBR-format */ + case OPC1_16_SBR_JEQ: + case OPC1_16_SBR_JGEZ: + case OPC1_16_SBR_JGTZ: + case OPC1_16_SBR_JLEZ: + case OPC1_16_SBR_JLTZ: + case OPC1_16_SBR_JNE: + case OPC1_16_SBR_JNZ: + case OPC1_16_SBR_JNZ_A: + case OPC1_16_SBR_JZ: + case OPC1_16_SBR_JZ_A: + case OPC1_16_SBR_LOOP: + r1 = MASK_OP_SBR_S2(ctx->opcode); + address = MASK_OP_SBR_DISP4(ctx->opcode); + gen_compute_branch(ctx, op1, r1, 0, 0, address); + break; } } |