mirror of https://github.com/proxmox/mirror_qemu
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>master
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fc2ef4a391
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83c1bb1868
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@ -568,6 +568,7 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,
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int r2 , int32_t constant , int32_t offset)
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int r2 , int32_t constant , int32_t offset)
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{
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{
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TCGv temp;
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TCGv temp;
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int n;
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switch (opc) {
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switch (opc) {
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/* SB-format jumps */
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/* SB-format jumps */
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@ -706,6 +707,20 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,
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}
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}
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tcg_temp_free(temp);
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tcg_temp_free(temp);
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break;
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break;
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/* BRN format */
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case OPCM_32_BRN_JTT:
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n = MASK_OP_BRN_N(ctx->opcode);
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temp = tcg_temp_new();
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tcg_gen_andi_tl(temp, cpu_gpr_d[r1], (1 << n));
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if (MASK_OP_BRN_OP2(ctx->opcode) == OPC2_32_BRN_JNZ_T) {
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gen_branch_condi(ctx, TCG_COND_NE, temp, 0, offset);
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} else {
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gen_branch_condi(ctx, TCG_COND_EQ, temp, 0, offset);
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}
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tcg_temp_free(temp);
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break;
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default:
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default:
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printf("Branch Error at %x\n", ctx->pc);
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printf("Branch Error at %x\n", ctx->pc);
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}
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}
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@ -2371,6 +2386,11 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
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op1 = MASK_OP_MAJOR(ctx->opcode);
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op1 = MASK_OP_MAJOR(ctx->opcode);
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/* handle JNZ.T opcode only being 6 bit long */
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if (unlikely((op1 & 0x3f) == OPCM_32_BRN_JTT)) {
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op1 = OPCM_32_BRN_JTT;
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}
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switch (op1) {
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switch (op1) {
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/* ABS-format */
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/* ABS-format */
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case OPCM_32_ABS_LDW:
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case OPCM_32_ABS_LDW:
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@ -2504,6 +2524,12 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
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r1 = MASK_OP_BRC_S1(ctx->opcode);
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r1 = MASK_OP_BRC_S1(ctx->opcode);
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gen_compute_branch(ctx, op1, r1, 0, const4, address);
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gen_compute_branch(ctx, op1, r1, 0, const4, address);
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break;
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break;
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/* BRN Format */
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case OPCM_32_BRN_JTT:
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address = MASK_OP_BRN_DISP15_SEXT(ctx->opcode);
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r1 = MASK_OP_BRN_S1(ctx->opcode);
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gen_compute_branch(ctx, op1, r1, 0, 0, address);
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break;
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}
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}
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}
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}
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@ -132,6 +132,7 @@
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/* BRN Format */
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/* BRN Format */
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#define MASK_OP_BRN_OP2(op) MASK_BITS_SHIFT(op, 31, 31)
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#define MASK_OP_BRN_OP2(op) MASK_BITS_SHIFT(op, 31, 31)
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#define MASK_OP_BRN_DISP15(op) MASK_BITS_SHIFT(op, 16, 30)
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#define MASK_OP_BRN_DISP15(op) MASK_BITS_SHIFT(op, 16, 30)
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#define MASK_OP_BRN_DISP15_SEXT(op) MASK_BITS_SHIFT_SEXT(op, 16, 30)
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#define MASK_OP_BRN_N(op) (MASK_BITS_SHIFT(op, 12, 15) + \
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#define MASK_OP_BRN_N(op) (MASK_BITS_SHIFT(op, 12, 15) + \
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(MASK_BITS_SHIFT(op, 7, 7) << 4))
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(MASK_BITS_SHIFT(op, 7, 7) << 4))
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#define MASK_OP_BRN_S1(op) MASK_BITS_SHIFT(op, 8, 11)
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#define MASK_OP_BRN_S1(op) MASK_BITS_SHIFT(op, 8, 11)
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