diff options
| author | Siarhei Volkau <lis8215@gmail.com> | 2023-06-08 13:42:09 +0300 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-07-10 23:33:38 +0200 |
| commit | 3f0e94c1348d29451db94fb0ebdbaf6fdda1c730 (patch) | |
| tree | 07b2d7df870f9fddee0e07f5c018e1edcc5c364e /target/mips | |
| parent | eb79951ab638ba84ef424a8f7c0929cd4a5ea53d (diff) | |
target/mips/mxu: Add S8STD S8LDI S8SDI instructions
These instructions are all load/store a byte from memory
and put it into/get it from MXU register in various combinations.
I-suffix instructions modify the base address GPR by offset provided.
Signed-off-by: Siarhei Volkau <lis8215@gmail.com>
Message-Id: <20230608104222.1520143-21-lis8215@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Diffstat (limited to 'target/mips')
| -rw-r--r-- | target/mips/tcg/mxu_translate.c | 74 |
1 files changed, 72 insertions, 2 deletions
diff --git a/target/mips/tcg/mxu_translate.c b/target/mips/tcg/mxu_translate.c index 5556fd152d..dcb0e13f93 100644 --- a/target/mips/tcg/mxu_translate.c +++ b/target/mips/tcg/mxu_translate.c @@ -382,6 +382,9 @@ enum { OPC_MXU__POOL14 = 0x1C, OPC_MXU_Q8ACCE = 0x1D, OPC_MXU_S8LDD = 0x22, + OPC_MXU_S8STD = 0x23, + OPC_MXU_S8LDI = 0x24, + OPC_MXU_S8SDI = 0x25, OPC_MXU__POOL16 = 0x27, OPC_MXU__POOL17 = 0x28, OPC_MXU_S32M2I = 0x2E, @@ -633,8 +636,11 @@ static void gen_mxu_s32m2i(DisasContext *ctx) /* * S8LDD XRa, Rb, s8, optn3 - Load a byte from memory to XRF + * + * S8LDI XRa, Rb, s8, optn3 - Load a byte from memory to XRF, + * post modify address register */ -static void gen_mxu_s8ldd(DisasContext *ctx) +static void gen_mxu_s8ldd(DisasContext *ctx, bool postmodify) { TCGv t0, t1; uint32_t XRa, Rb, s8, optn3; @@ -649,6 +655,9 @@ static void gen_mxu_s8ldd(DisasContext *ctx) gen_load_gpr(t0, Rb); tcg_gen_addi_tl(t0, t0, (int8_t)s8); + if (postmodify) { + gen_store_gpr(t0, Rb); + } switch (optn3) { /* XRa[7:0] = tmp8 */ @@ -706,6 +715,58 @@ static void gen_mxu_s8ldd(DisasContext *ctx) } /* + * S8STD XRa, Rb, s8, optn3 - Store a byte from XRF to memory + * + * S8SDI XRa, Rb, s8, optn3 - Store a byte from XRF to memory, + * post modify address register + */ +static void gen_mxu_s8std(DisasContext *ctx, bool postmodify) +{ + TCGv t0, t1; + uint32_t XRa, Rb, s8, optn3; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + XRa = extract32(ctx->opcode, 6, 4); + s8 = extract32(ctx->opcode, 10, 8); + optn3 = extract32(ctx->opcode, 18, 3); + Rb = extract32(ctx->opcode, 21, 5); + + if (optn3 > 3) { + /* reserved, do nothing */ + return; + } + + gen_load_gpr(t0, Rb); + tcg_gen_addi_tl(t0, t0, (int8_t)s8); + if (postmodify) { + gen_store_gpr(t0, Rb); + } + gen_load_mxu_gpr(t1, XRa); + + switch (optn3) { + /* XRa[7:0] => tmp8 */ + case MXU_OPTN3_PTN0: + tcg_gen_extract_tl(t1, t1, 0, 8); + break; + /* XRa[15:8] => tmp8 */ + case MXU_OPTN3_PTN1: + tcg_gen_extract_tl(t1, t1, 8, 8); + break; + /* XRa[23:16] => tmp8 */ + case MXU_OPTN3_PTN2: + tcg_gen_extract_tl(t1, t1, 16, 8); + break; + /* XRa[31:24] => tmp8 */ + case MXU_OPTN3_PTN3: + tcg_gen_extract_tl(t1, t1, 24, 8); + break; + } + + tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx, MO_UB); +} +/* * D16MUL XRa, XRb, XRc, XRd, optn2 - Signed 16 bit pattern multiplication * D16MULF XRa, XRb, XRc, optn2 - Signed Q15 fraction pattern multiplication * with rounding and packing result @@ -3707,7 +3768,16 @@ bool decode_ase_mxu(DisasContext *ctx, uint32_t insn) gen_mxu_q8adde(ctx, true); break; case OPC_MXU_S8LDD: - gen_mxu_s8ldd(ctx); + gen_mxu_s8ldd(ctx, false); + break; + case OPC_MXU_S8STD: + gen_mxu_s8std(ctx, false); + break; + case OPC_MXU_S8LDI: + gen_mxu_s8ldd(ctx, true); + break; + case OPC_MXU_S8SDI: + gen_mxu_s8std(ctx, true); break; case OPC_MXU__POOL16: decode_opc_mxu__pool16(ctx); |