diff options
| author | James Hogan <james.hogan@imgtec.com> | 2017-07-18 12:55:54 +0100 |
|---|---|---|
| committer | Yongbok Kim <yongbok.kim@imgtec.com> | 2017-07-20 22:42:26 +0100 |
| commit | b0fc6003224543d2bdb172eca752656a6223e4a1 (patch) | |
| tree | 174e0757fcf32dd89fe80f47f6e29c38b8d84dd8 /target/mips | |
| parent | 9fbf4a58c90183b30bb2c8ad971ccce7e6716a16 (diff) | |
target/mips: Abstract mmu_idx from hflags
The MIPS mmu_idx is sometimes calculated from hflags without an env
pointer available as cpu_mmu_index() requires.
Create a common hflags_mmu_index() for the purpose of this calculation
which can operate on any hflags, not just with an env pointer, and
update cpu_mmu_index() itself and gen_intermediate_code() to use it.
Also update debug_post_eret() and helper_mtc0_status() to log the MMU
mode with the status change (SM, UM, or nothing for kernel mode) based
on cpu_mmu_index() rather than directly testing hflags.
This will also allow the logic to be more easily updated when a new MMU
mode is added.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Diffstat (limited to 'target/mips')
| -rw-r--r-- | target/mips/cpu.h | 8 | ||||
| -rw-r--r-- | target/mips/op_helper.c | 4 | ||||
| -rw-r--r-- | target/mips/translate.c | 2 |
3 files changed, 10 insertions, 4 deletions
diff --git a/target/mips/cpu.h b/target/mips/cpu.h index 2b699a0e24..3cf1676115 100644 --- a/target/mips/cpu.h +++ b/target/mips/cpu.h @@ -699,9 +699,15 @@ extern uint32_t cpu_rddsp(uint32_t mask_num, CPUMIPSState *env); #define MMU_MODE1_SUFFIX _super #define MMU_MODE2_SUFFIX _user #define MMU_USER_IDX 2 + +static inline int hflags_mmu_index(uint32_t hflags) +{ + return hflags & MIPS_HFLAG_KSU; +} + static inline int cpu_mmu_index (CPUMIPSState *env, bool ifetch) { - return env->hflags & MIPS_HFLAG_KSU; + return hflags_mmu_index(env->hflags); } static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState *env) diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 3b560d96b4..da1817e94a 100644 --- a/target/mips/op_helper.c +++ b/target/mips/op_helper.c @@ -1450,7 +1450,7 @@ void helper_mtc0_status(CPUMIPSState *env, target_ulong arg1) old, old & env->CP0_Cause & CP0Ca_IP_mask, val, val & env->CP0_Cause & CP0Ca_IP_mask, env->CP0_Cause); - switch (env->hflags & MIPS_HFLAG_KSU) { + switch (cpu_mmu_index(env, false)) { case MIPS_HFLAG_UM: qemu_log(", UM\n"); break; case MIPS_HFLAG_SM: qemu_log(", SM\n"); break; case MIPS_HFLAG_KM: qemu_log("\n"); break; @@ -2244,7 +2244,7 @@ static void debug_post_eret(CPUMIPSState *env) qemu_log(" ErrorEPC " TARGET_FMT_lx, env->CP0_ErrorEPC); if (env->hflags & MIPS_HFLAG_DM) qemu_log(" DEPC " TARGET_FMT_lx, env->CP0_DEPC); - switch (env->hflags & MIPS_HFLAG_KSU) { + switch (cpu_mmu_index(env, false)) { case MIPS_HFLAG_UM: qemu_log(", UM\n"); break; case MIPS_HFLAG_SM: qemu_log(", SM\n"); break; case MIPS_HFLAG_KM: qemu_log("\n"); break; diff --git a/target/mips/translate.c b/target/mips/translate.c index 97879199f1..4fb8217953 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -20157,7 +20157,7 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb) #ifdef CONFIG_USER_ONLY ctx.mem_idx = MIPS_HFLAG_UM; #else - ctx.mem_idx = ctx.hflags & MIPS_HFLAG_KSU; + ctx.mem_idx = hflags_mmu_index(ctx.hflags); #endif ctx.default_tcg_memop_mask = (ctx.insn_flags & ISA_MIPS32R6) ? MO_UNALN : MO_ALIGN; |