diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2022-04-21 08:17:25 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-04-26 08:17:05 -0700 |
| commit | 3a03087019ab4a67751570190439d252b39b83c4 (patch) | |
| tree | 9f65eb10b376a28b7458318f1a5e5057a9c7049c /target/nios2/op_helper.c | |
| parent | 945a5bd3f88729960c52393a9eb3ad701e2b6595 (diff) | |
target/nios2: Implement rdprs, wrprs
Implement these out of line, so that tcg global temps
(aka the architectural registers) are synced back to
tcg storage as required. This makes sure that we get
the proper results when status.PRS == status.CRS.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-55-richard.henderson@linaro.org>
Diffstat (limited to 'target/nios2/op_helper.c')
| -rw-r--r-- | target/nios2/op_helper.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/target/nios2/op_helper.c b/target/nios2/op_helper.c index 38a71a1f2d..a3164f5356 100644 --- a/target/nios2/op_helper.c +++ b/target/nios2/op_helper.c @@ -83,4 +83,20 @@ void helper_eret(CPUNios2State *env, uint32_t new_status, uint32_t new_pc) env->pc = new_pc; cpu_loop_exit(cs); } + +/* + * RDPRS and WRPRS are implemented out of line so that if PRS == CRS, + * all of the tcg global temporaries are synced back to ENV. + */ +uint32_t helper_rdprs(CPUNios2State *env, uint32_t regno) +{ + unsigned prs = FIELD_EX32(env->ctrl[CR_STATUS], CR_STATUS, PRS); + return env->shadow_regs[prs][regno]; +} + +void helper_wrprs(CPUNios2State *env, uint32_t regno, uint32_t val) +{ + unsigned prs = FIELD_EX32(env->ctrl[CR_STATUS], CR_STATUS, PRS); + env->shadow_regs[prs][regno] = val; +} #endif /* !CONFIG_USER_ONLY */ |