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target/mips: Clean up handling of CP0 register 4

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Clean up handling of CP0 register 4.

Backports commit 020fe379093deb116d72174268335d60133f0e26 from qemu
This commit is contained in:
Aleksandar Markovic 2019-11-18 22:46:45 -05:00 committed by Lioncash
parent d96b3d06c4
commit 11ac98331a
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 22 additions and 16 deletions
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2
qemu/target/mips/cpu.h
View file

@ -304,7 +304,9 @@ typedef struct mips_def_t mips_def_t;
#define CP0_REG03__TCOPT 7
/* CP0 Register 04 */
#define CP0_REG04__CONTEXT 0
#define CP0_REG04__CONTEXTCONFIG 1
#define CP0_REG04__USERLOCAL 2
#define CP0_REG04__XCONTEXTCONFIG 3
#define CP0_REG04__DBGCONTEXTID 4
#define CP0_REG00__MMID 5
/* CP0 Register 05 */

36
qemu/target/mips/translate.c
View file

@ -7058,16 +7058,17 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
break;
case CP0_REGISTER_04:
switch (sel) {
case 0:
case CP0_REG04__CONTEXT:
tcg_gen_ld_tl(tcg_ctx, arg, tcg_ctx->cpu_env, offsetof(CPUMIPSState, CP0_Context));
tcg_gen_ext32s_tl(tcg_ctx, arg, arg);
register_name = "Context";
break;
case 1:
/* gen_helper_mfc0_contextconfig(arg); - SmartMIPS ASE */
case CP0_REG04__CONTEXTCONFIG:
/* SmartMIPS ASE */
/* gen_helper_mfc0_contextconfig(arg); */
register_name = "ContextConfig";
goto cp0_unimplemented;
case 2:
case CP0_REG04__USERLOCAL:
CP0_CHECK(ctx->ulri);
tcg_gen_ld_tl(tcg_ctx, arg, tcg_ctx->cpu_env,
offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
@ -7790,15 +7791,16 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
break;
case CP0_REGISTER_04:
switch (sel) {
case 0:
case CP0_REG04__CONTEXT:
gen_helper_mtc0_context(tcg_ctx, tcg_ctx->cpu_env, arg);
register_name = "Context";
break;
case 1:
// gen_helper_mtc0_contextconfig(tcg_ctx->cpu_env, arg); /* SmartMIPS ASE */
case CP0_REG04__CONTEXTCONFIG:
/* SmartMIPS ASE */
/* gen_helper_mtc0_contextconfig(tcg_ctx->cpu_env, arg); */
register_name = "ContextConfig";
goto cp0_unimplemented;
case 2:
case CP0_REG04__USERLOCAL:
CP0_CHECK(ctx->ulri);
tcg_gen_st_tl(tcg_ctx, arg, tcg_ctx->cpu_env,
offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
@ -8530,15 +8532,16 @@ static void gen_dmfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
break;
case CP0_REGISTER_04:
switch (sel) {
case 0:
case CP0_REG04__CONTEXT:
tcg_gen_ld_tl(tcg_ctx, arg, tcg_ctx->cpu_env, offsetof(CPUMIPSState, CP0_Context));
register_name = "Context";
break;
case 1:
// gen_helper_dmfc0_contextconfig(arg); /* SmartMIPS ASE */
case CP0_REG04__CONTEXTCONFIG:
/* SmartMIPS ASE */
/* gen_helper_dmfc0_contextconfig(arg); */
register_name = "ContextConfig";
goto cp0_unimplemented;
case 2:
case CP0_REG04__USERLOCAL:
CP0_CHECK(ctx->ulri);
tcg_gen_ld_tl(tcg_ctx, arg, tcg_ctx->cpu_env,
offsetof(CPUMIPSState, active_tc.CP0_UserLocal));
@ -9241,15 +9244,16 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
break;
case CP0_REGISTER_04:
switch (sel) {
case 0:
case CP0_REG04__CONTEXT:
gen_helper_mtc0_context(tcg_ctx, tcg_ctx->cpu_env, arg);
register_name = "Context";
break;
case 1:
// gen_helper_mtc0_contextconfig(tcg_ctx->cpu_env, arg); /* SmartMIPS ASE */
case CP0_REG04__CONTEXTCONFIG:
/* SmartMIPS ASE */
/* gen_helper_mtc0_contextconfig(tcg_ctx->cpu_env, arg); */
register_name = "ContextConfig";
goto cp0_unimplemented;
case 2:
case CP0_REG04__USERLOCAL:
CP0_CHECK(ctx->ulri);
tcg_gen_st_tl(tcg_ctx, arg, tcg_ctx->cpu_env,
offsetof(CPUMIPSState, active_tc.CP0_UserLocal));