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[Qemu-devel] [PATCH v10 09/65] target/mips: Add emulation of nanoMIPS 16
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PATCH v10 09/65] target/mips: Add emulation of nanoMIPS 16-bit misc instructions |
Date: |
Fri, 17 Aug 2018 16:02:57 +0200 |
From: Yongbok Kim <address@hidden>
Add emulation of misc nanoMIPS 16-bit instructions.
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Yongbok Kim <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
Signed-off-by: Stefan Markovic <address@hidden>
---
target/mips/translate.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 0c24120..fe8a760 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -16763,6 +16763,40 @@ static int decode_nanomips_opc(CPUMIPSState *env,
DisasContext *ctx)
op = extract32(ctx->opcode, 10, 6);
switch (op) {
case NM_P16_MV:
+ rt = NANOMIPS_EXTRACT_RD5(ctx->opcode);
+ if (rt != 0) {
+ /* MOVE */
+ rs = NANOMIPS_EXTRACT_RS5(ctx->opcode);
+ gen_arith(ctx, OPC_ADDU, rt, rs, 0);
+ } else {
+ /* P16.RI */
+ switch (extract32(ctx->opcode, 3, 2)) {
+ case NM_P16_SYSCALL:
+ if (extract32(ctx->opcode, 2, 1) == 0) {
+ generate_exception_end(ctx, EXCP_SYSCALL);
+ } else {
+ generate_exception_end(ctx, EXCP_RI);
+ }
+ break;
+ case NM_BREAK16:
+ generate_exception_end(ctx, EXCP_BREAK);
+ break;
+ case NM_SDBBP16:
+ if (is_uhi(extract32(ctx->opcode, 0, 3))) {
+ gen_helper_do_semihosting(cpu_env);
+ } else {
+ if (ctx->hflags & MIPS_HFLAG_SBRI) {
+ generate_exception_end(ctx, EXCP_RI);
+ } else {
+ generate_exception_end(ctx, EXCP_DBp);
+ }
+ }
+ break;
+ default:
+ generate_exception_end(ctx, EXCP_RI);
+ break;
+ }
+ }
break;
case NM_P16_SHIFT:
{
@@ -16842,6 +16876,13 @@ static int decode_nanomips_opc(CPUMIPSState *env,
DisasContext *ctx)
}
break;
case NM_LI16:
+ {
+ int imm = extract32(ctx->opcode, 0, 7);
+ imm = (imm == 0x7f ? -1 : imm);
+ if (rt != 0) {
+ tcg_gen_movi_tl(cpu_gpr[rt], imm);
+ }
+ }
break;
case NM_ANDI16:
break;
--
2.7.4
- [Qemu-devel] [PATCH v10 05/65] target/mips: Add nanoMIPS decoding and extraction utilities, (continued)
- [Qemu-devel] [PATCH v10 05/65] target/mips: Add nanoMIPS decoding and extraction utilities, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 06/65] target/mips: Add emulation of nanoMIPS 16-bit arithmetic instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 04/65] target/mips: Add placeholder and invocation of decode_nanomips_opc(), Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 11/65] target/mips: Add emulation of nanoMIPS 16-bit logic instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 14/65] target/mips: Add emulation of nanoMIPS instructions MOVE.P and MOVE.PREV, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 10/65] target/mips: Add emulation of nanoMIPS 16-bit load and store instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 15/65] target/mips: Add emulation of nanoMIPS 48-bit instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 28/65] target/mips: Add emulation of DSP ASE for nanoMIPS - part 2, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 13/65] target/mips: Add emulation of some common nanoMIPS 32-bit instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 17/65] target/mips: Add emulation of misc nanoMIPS instructions (pool32a0), Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 09/65] target/mips: Add emulation of nanoMIPS 16-bit misc instructions,
Aleksandar Markovic <=
- [Qemu-devel] [PATCH v10 07/65] target/mips: Add emulation of nanoMIPS 16-bit branch instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 08/65] target/mips: Add emulation of nanoMIPS 16-bit shift instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 12/65] target/mips: Add emulation of nanoMIPS 16-bit save and restore instructions, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 18/65] target/mips: Add emulation of misc nanoMIPS instructions (pool32axf), Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 19/65] target/mips: Add emulation of misc nanoMIPS instructions (p_lsx), Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 29/65] target/mips: Add emulation of DSP ASE for nanoMIPS - part 3, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 26/65] target/mips: Implement MT ASE support for nanoMIPS, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 50/65] linux-user: Add sockbits.h header for nanoMIPS, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 31/65] target/mips: Add emulation of DSP ASE for nanoMIPS - part 5, Aleksandar Markovic, 2018/08/17
- [Qemu-devel] [PATCH v10 53/65] linux-user: Add target_structs.h header for nanoMIPS, Aleksandar Markovic, 2018/08/17