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[Qemu-devel] [PATCH v7 22/80] target/mips: Add emulation of nanoMIPS 16-
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PATCH v7 22/80] target/mips: Add emulation of nanoMIPS 16-bit misc instructions |
Date: |
Mon, 6 Aug 2018 18:59:49 +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 c4f1224..7a3d45b 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -16613,6 +16613,40 @@ 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:
{
@@ -16692,6 +16726,13 @@ 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 v7 12/80] linux-user: Update MIPS syscall numbers up to kernel 4.18 headers, (continued)
- [Qemu-devel] [PATCH v7 12/80] linux-user: Update MIPS syscall numbers up to kernel 4.18 headers, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 13/80] linux-user: Add preprocessor availability control to some syscalls, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 14/80] target/mips: Add preprocessor constants for nanoMIPS, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 15/80] target/mips: Add nanoMIPS base instruction set opcodes, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 16/80] target/mips: Add nanoMIPS DSP ASE opcodes, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 17/80] target/mips: Add placeholder and invocation of decode_nanomips_opc(), Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 18/80] target/mips: Add nanoMIPS decoding and extraction utilities, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 19/80] target/mips: Add emulation of nanoMIPS 16-bit arithmetic instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 20/80] target/mips: Add emulation of nanoMIPS 16-bit branch instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 21/80] target/mips: Add emulation of nanoMIPS 16-bit shift instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 22/80] target/mips: Add emulation of nanoMIPS 16-bit misc instructions,
Aleksandar Markovic <=
- [Qemu-devel] [PATCH v7 23/80] target/mips: Add emulation of nanoMIPS 16-bit load and store instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 24/80] target/mips: Add emulation of nanoMIPS 16-bit logic instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 25/80] target/mips: Add emulation of nanoMIPS 16-bit save and restore instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 26/80] target/mips: Add emulation of some common nanoMIPS 32-bit instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 27/80] target/mips: Add emulation of nanoMIPS instructions MOVE.P and MOVE.PREV, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 28/80] target/mips: Add emulation of nanoMIPS 48-bit instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 29/80] target/mips: Add emulation of nanoMIPS FP instructions, Aleksandar Markovic, 2018/08/06
- [Qemu-devel] [PATCH v7 30/80] target/mips: Add emulation of misc nanoMIPS instructions (pool32a0), Aleksandar Markovic, 2018/08/06