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[Qemu-devel] [PULL 2/5] target-tricore: Add instructions of ABS, ABSB op
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From: |
Bastian Koppelmann |
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Subject: |
[Qemu-devel] [PULL 2/5] target-tricore: Add instructions of ABS, ABSB opcode format |
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Date: |
Tue, 21 Oct 2014 17:54:47 +0100 |
Add instructions of ABS, ABSB opcode format.
Add microcode generator functions for ld/st of two 32bit reg as one 64bit value.
Add microcode generator functions for ldmst and swap.
Add helper ldlcx, lducx, stlcx and stucx.
Signed-off-by: Bastian Koppelmann <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
---
target-tricore/helper.h | 4 +
target-tricore/op_helper.c | 45 +++++++
target-tricore/translate.c | 303 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 352 insertions(+)
diff --git a/target-tricore/helper.h b/target-tricore/helper.h
index 7b7d74b..fbabbd5 100644
--- a/target-tricore/helper.h
+++ b/target-tricore/helper.h
@@ -23,3 +23,7 @@ DEF_HELPER_2(call, void, env, i32)
DEF_HELPER_1(ret, void, env)
DEF_HELPER_2(bisr, void, env, i32)
DEF_HELPER_1(rfe, void, env)
+DEF_HELPER_2(ldlcx, void, env, i32)
+DEF_HELPER_2(lducx, void, env, i32)
+DEF_HELPER_2(stlcx, void, env, i32)
+DEF_HELPER_2(stucx, void, env, i32)
diff --git a/target-tricore/op_helper.c b/target-tricore/op_helper.c
index f2a5cbc..94b5d8e 100644
--- a/target-tricore/op_helper.c
+++ b/target-tricore/op_helper.c
@@ -175,6 +175,27 @@ static void restore_context_upper(CPUTriCoreState *env,
int ea,
env->gpr_d[15] = cpu_ldl_data(env, ea+60);
}
+static void restore_context_lower(CPUTriCoreState *env, int ea,
+ target_ulong *ra, target_ulong *pcxi)
+{
+ *pcxi = cpu_ldl_data(env, ea);
+ *ra = cpu_ldl_data(env, ea+4);
+ env->gpr_a[2] = cpu_ldl_data(env, ea+8);
+ env->gpr_a[3] = cpu_ldl_data(env, ea+12);
+ env->gpr_d[0] = cpu_ldl_data(env, ea+16);
+ env->gpr_d[1] = cpu_ldl_data(env, ea+20);
+ env->gpr_d[2] = cpu_ldl_data(env, ea+24);
+ env->gpr_d[3] = cpu_ldl_data(env, ea+28);
+ env->gpr_a[4] = cpu_ldl_data(env, ea+32);
+ env->gpr_a[5] = cpu_ldl_data(env, ea+36);
+ env->gpr_a[6] = cpu_ldl_data(env, ea+40);
+ env->gpr_a[7] = cpu_ldl_data(env, ea+44);
+ env->gpr_d[4] = cpu_ldl_data(env, ea+48);
+ env->gpr_d[5] = cpu_ldl_data(env, ea+52);
+ env->gpr_d[6] = cpu_ldl_data(env, ea+56);
+ env->gpr_d[7] = cpu_ldl_data(env, ea+60);
+}
+
void helper_call(CPUTriCoreState *env, uint32_t next_pc)
{
target_ulong tmp_FCX;
@@ -356,6 +377,30 @@ void helper_rfe(CPUTriCoreState *env)
psw_write(env, new_PSW);
}
+void helper_ldlcx(CPUTriCoreState *env, uint32_t ea)
+{
+ uint32_t dummy;
+ /* insn doesn't load PCXI and RA */
+ restore_context_lower(env, ea, &dummy, &dummy);
+}
+
+void helper_lducx(CPUTriCoreState *env, uint32_t ea)
+{
+ uint32_t dummy;
+ /* insn doesn't load PCXI and PSW */
+ restore_context_upper(env, ea, &dummy, &dummy);
+}
+
+void helper_stlcx(CPUTriCoreState *env, uint32_t ea)
+{
+ save_context_lower(env, ea);
+}
+
+void helper_stucx(CPUTriCoreState *env, uint32_t ea)
+{
+ save_context_upper(env, ea);
+}
+
static inline void QEMU_NORETURN do_raise_exception_err(CPUTriCoreState *env,
uint32_t exception,
int error_code,
diff --git a/target-tricore/translate.c b/target-tricore/translate.c
index 4f654de..fc89a43 100644
--- a/target-tricore/translate.c
+++ b/target-tricore/translate.c
@@ -115,6 +115,8 @@ void tricore_cpu_dump_state(CPUState *cs, FILE *f,
tcg_temp_free_i32(helper_tmp); \
} while (0)
+#define EA_ABS_FORMAT(con) (((con & 0x3C000) << 14) + (con & 0x3FFF))
+
/* Functions for load/save to/from memory */
static inline void gen_offset_ld(DisasContext *ctx, TCGv r1, TCGv r2,
@@ -135,6 +137,62 @@ static inline void gen_offset_st(DisasContext *ctx, TCGv
r1, TCGv r2,
tcg_temp_free(temp);
}
+static void gen_st_2regs_64(TCGv rh, TCGv rl, TCGv address, DisasContext *ctx)
+{
+ TCGv_i64 temp = tcg_temp_new_i64();
+
+ tcg_gen_concat_i32_i64(temp, rl, rh);
+ tcg_gen_qemu_st_i64(temp, address, ctx->mem_idx, MO_LEQ);
+
+ tcg_temp_free_i64(temp);
+}
+
+static void gen_ld_2regs_64(TCGv rh, TCGv rl, TCGv address, DisasContext *ctx)
+{
+ TCGv_i64 temp = tcg_temp_new_i64();
+
+ tcg_gen_qemu_ld_i64(temp, address, ctx->mem_idx, MO_LEQ);
+ /* write back to two 32 bit regs */
+ tcg_gen_extr_i64_i32(rl, rh, temp);
+
+ tcg_temp_free_i64(temp);
+}
+
+/* M(EA, word) = (M(EA, word) & ~E[a][63:32]) | (E[a][31:0] & E[a][63:32]); */
+static void gen_ldmst(DisasContext *ctx, int ereg, TCGv ea)
+{
+ TCGv temp = tcg_temp_new();
+ TCGv temp2 = tcg_temp_new();
+
+ /* temp = (M(EA, word) */
+ tcg_gen_qemu_ld_tl(temp, ea, ctx->mem_idx, MO_LEUL);
+ /* temp = temp & ~E[a][63:32]) */
+ tcg_gen_andc_tl(temp, temp, cpu_gpr_d[ereg+1]);
+ /* temp2 = (E[a][31:0] & E[a][63:32]); */
+ tcg_gen_and_tl(temp2, cpu_gpr_d[ereg], cpu_gpr_d[ereg+1]);
+ /* temp = temp | temp2; */
+ tcg_gen_or_tl(temp, temp, temp2);
+ /* M(EA, word) = temp; */
+ tcg_gen_qemu_st_tl(temp, ea, ctx->mem_idx, MO_LEUL);
+
+ tcg_temp_free(temp);
+ tcg_temp_free(temp2);
+}
+
+/* tmp = M(EA, word);
+ M(EA, word) = D[a];
+ D[a] = tmp[31:0];*/
+static void gen_swap(DisasContext *ctx, int reg, TCGv ea)
+{
+ TCGv temp = tcg_temp_new();
+
+ tcg_gen_qemu_ld_tl(temp, ea, ctx->mem_idx, MO_LEUL);
+ tcg_gen_qemu_st_tl(cpu_gpr_d[reg], ea, ctx->mem_idx, MO_LEUL);
+ tcg_gen_mov_tl(cpu_gpr_d[reg], temp);
+
+ tcg_temp_free(temp);
+}
+
/* Functions for arithmetic instructions */
static inline void gen_add_d(TCGv ret, TCGv r1, TCGv r2)
@@ -1099,8 +1157,253 @@ static void decode_16Bit_opc(CPUTriCoreState *env,
DisasContext *ctx)
}
}
+/*
+ * 32 bit instructions
+ */
+
+/* ABS-format */
+static void decode_abs_ldw(CPUTriCoreState *env, DisasContext *ctx)
+{
+ int32_t op2;
+ int32_t r1;
+ uint32_t address;
+ TCGv temp;
+
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ switch (op2) {
+ case OPC2_32_ABS_LD_A:
+ tcg_gen_qemu_ld_tl(cpu_gpr_a[r1], temp, ctx->mem_idx, MO_LESL);
+ break;
+ case OPC2_32_ABS_LD_D:
+ gen_ld_2regs_64(cpu_gpr_d[r1+1], cpu_gpr_d[r1], temp, ctx);
+ break;
+ case OPC2_32_ABS_LD_DA:
+ gen_ld_2regs_64(cpu_gpr_a[r1+1], cpu_gpr_a[r1], temp, ctx);
+ break;
+ case OPC2_32_ABS_LD_W:
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LESL);
+ break;
+ }
+
+ tcg_temp_free(temp);
+}
+
+static void decode_abs_ldb(CPUTriCoreState *env, DisasContext *ctx)
+{
+ int32_t op2;
+ int32_t r1;
+ uint32_t address;
+ TCGv temp;
+
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ switch (op2) {
+ case OPC2_32_ABS_LD_B:
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_SB);
+ break;
+ case OPC2_32_ABS_LD_BU:
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_UB);
+ break;
+ case OPC2_32_ABS_LD_H:
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LESW);
+ break;
+ case OPC2_32_ABS_LD_HU:
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LEUW);
+ break;
+ }
+
+ tcg_temp_free(temp);
+}
+
+static void decode_abs_ldst_swap(CPUTriCoreState *env, DisasContext *ctx)
+{
+ int32_t op2;
+ int32_t r1;
+ uint32_t address;
+ TCGv temp;
+
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ switch (op2) {
+ case OPC2_32_ABS_LDMST:
+ gen_ldmst(ctx, r1, temp);
+ break;
+ case OPC2_32_ABS_SWAP_W:
+ gen_swap(ctx, r1, temp);
+ break;
+ }
+
+ tcg_temp_free(temp);
+}
+
+static void decode_abs_ldst_context(CPUTriCoreState *env, DisasContext *ctx)
+{
+ uint32_t op2;
+ int32_t off18;
+
+ off18 = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ switch (op2) {
+ case OPC2_32_ABS_LDLCX:
+ gen_helper_1arg(ldlcx, EA_ABS_FORMAT(off18));
+ break;
+ case OPC2_32_ABS_LDUCX:
+ gen_helper_1arg(lducx, EA_ABS_FORMAT(off18));
+ break;
+ case OPC2_32_ABS_STLCX:
+ gen_helper_1arg(stlcx, EA_ABS_FORMAT(off18));
+ break;
+ case OPC2_32_ABS_STUCX:
+ gen_helper_1arg(stucx, EA_ABS_FORMAT(off18));
+ break;
+ }
+}
+
+static void decode_abs_store(CPUTriCoreState *env, DisasContext *ctx)
+{
+ int32_t op2;
+ int32_t r1;
+ uint32_t address;
+ TCGv temp;
+
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ switch (op2) {
+ case OPC2_32_ABS_ST_A:
+ tcg_gen_qemu_st_tl(cpu_gpr_a[r1], temp, ctx->mem_idx, MO_LESL);
+ break;
+ case OPC2_32_ABS_ST_D:
+ gen_st_2regs_64(cpu_gpr_d[r1+1], cpu_gpr_d[r1], temp, ctx);
+ break;
+ case OPC2_32_ABS_ST_DA:
+ gen_st_2regs_64(cpu_gpr_a[r1+1], cpu_gpr_a[r1], temp, ctx);
+ break;
+ case OPC2_32_ABS_ST_W:
+ tcg_gen_qemu_st_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LESL);
+ break;
+
+ }
+ tcg_temp_free(temp);
+}
+
+static void decode_abs_storeb_h(CPUTriCoreState *env, DisasContext *ctx)
+{
+ int32_t op2;
+ int32_t r1;
+ uint32_t address;
+ TCGv temp;
+
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ op2 = MASK_OP_ABS_OP2(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ switch (op2) {
+ case OPC2_32_ABS_ST_B:
+ tcg_gen_qemu_st_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_UB);
+ break;
+ case OPC2_32_ABS_ST_H:
+ tcg_gen_qemu_st_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LEUW);
+ break;
+ }
+ tcg_temp_free(temp);
+}
+
static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
{
+ int op1;
+ int32_t r1;
+ int32_t address;
+ int8_t b;
+ int32_t bpos;
+ TCGv temp, temp2;
+
+ op1 = MASK_OP_MAJOR(ctx->opcode);
+
+ switch (op1) {
+/* ABS-format */
+ case OPCM_32_ABS_LDW:
+ decode_abs_ldw(env, ctx);
+ break;
+ case OPCM_32_ABS_LDB:
+ decode_abs_ldb(env, ctx);
+ break;
+ case OPCM_32_ABS_LDMST_SWAP:
+ decode_abs_ldst_swap(env, ctx);
+ break;
+ case OPCM_32_ABS_LDST_CONTEXT:
+ decode_abs_ldst_context(env, ctx);
+ break;
+ case OPCM_32_ABS_STORE:
+ decode_abs_store(env, ctx);
+ break;
+ case OPCM_32_ABS_STOREB_H:
+ decode_abs_storeb_h(env, ctx);
+ break;
+ case OPC1_32_ABS_STOREQ:
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+ temp2 = tcg_temp_new();
+
+ tcg_gen_shri_tl(temp2, cpu_gpr_d[r1], 16);
+ tcg_gen_qemu_st_tl(temp2, temp, ctx->mem_idx, MO_LEUW);
+
+ tcg_temp_free(temp2);
+ tcg_temp_free(temp);
+ break;
+ case OPC1_32_ABS_LD_Q:
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+
+ tcg_gen_qemu_ld_tl(cpu_gpr_d[r1], temp, ctx->mem_idx, MO_LEUW);
+ tcg_gen_shli_tl(cpu_gpr_d[r1], cpu_gpr_d[r1], 16);
+
+ tcg_temp_free(temp);
+ break;
+ case OPC1_32_ABS_LEA:
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ r1 = MASK_OP_ABS_S1D(ctx->opcode);
+ tcg_gen_movi_tl(cpu_gpr_a[r1], EA_ABS_FORMAT(address));
+ break;
+/* ABSB-format */
+ case OPC1_32_ABSB_ST_T:
+ address = MASK_OP_ABS_OFF18(ctx->opcode);
+ b = MASK_OP_ABSB_B(ctx->opcode);
+ bpos = MASK_OP_ABSB_BPOS(ctx->opcode);
+
+ temp = tcg_const_i32(EA_ABS_FORMAT(address));
+ temp2 = tcg_temp_new();
+
+ tcg_gen_qemu_ld_tl(temp2, temp, ctx->mem_idx, MO_UB);
+ tcg_gen_andi_tl(temp2, temp2, ~(0x1u << bpos));
+ tcg_gen_ori_tl(temp2, temp2, (b << bpos));
+ tcg_gen_qemu_st_tl(temp2, temp, ctx->mem_idx, MO_UB);
+
+ tcg_temp_free(temp);
+ tcg_temp_free(temp2);
+ break;
+ }
}
static void decode_opc(CPUTriCoreState *env, DisasContext *ctx, int *is_branch)
--
2.1.2
- [Qemu-devel] [PULL 0/5] target-tricore patches, Bastian Koppelmann, 2014/10/21
- [Qemu-devel] [PULL 1/5] target-tricore: Cleanup and Bugfixes, Bastian Koppelmann, 2014/10/21
- [Qemu-devel] [PULL 2/5] target-tricore: Add instructions of ABS, ABSB opcode format,
Bastian Koppelmann <=
- [Qemu-devel] [PULL 4/5] target-tricore: Add instructions of BIT opcode format, Bastian Koppelmann, 2014/10/21
- [Qemu-devel] [PULL 3/5] target-tricore: Add instructions of B opcode format, Bastian Koppelmann, 2014/10/21
- [Qemu-devel] [PULL 5/5] target-tricore: Add instructions of BO opcode format, Bastian Koppelmann, 2014/10/21
- Re: [Qemu-devel] [PULL 0/5] target-tricore patches, Peter Maydell, 2014/10/22