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linux-user/sparc: Handle tstate in sparc64_get/set_context()

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Correctly implement save/restore of the tstate field in
sparc64_get_context() and sparc64_set_context():
 * Don't use the CWP value from the guest in set_context
 * Construct and save a tstate value rather than leaving
   it as zero in get_context

To do this we factor out the "calculate TSTATE value from CPU state"
code from sparc_cpu_do_interrupt() into its own sparc64_tstate()
function; that in turn requires us to move some of the function
prototypes out from inside a CPU_NO_IO_DEFS ifdef guard.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201106152738.26026-5-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Peter Maydell 2020-11-06 15:27:38 +00:00 • committed by Laurent Vivier
parent 0ad20314f1
commit 7a5805a08f
3 changed files with 24 additions and 12 deletions
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24
target/sparc/cpu.h
View file

@ -608,10 +608,6 @@ target_ulong cpu_get_psr(CPUSPARCState *env1);
void cpu_put_psr(CPUSPARCState *env1, target_ulong val);
void cpu_put_psr_raw(CPUSPARCState *env1, target_ulong val);
#ifdef TARGET_SPARC64
target_ulong cpu_get_ccr(CPUSPARCState *env1);
void cpu_put_ccr(CPUSPARCState *env1, target_ulong val);
target_ulong cpu_get_cwp64(CPUSPARCState *env1);
void cpu_put_cwp64(CPUSPARCState *env1, int cwp);
void cpu_change_pstate(CPUSPARCState *env1, uint32_t new_pstate);
void cpu_gl_switch_gregs(CPUSPARCState *env, uint32_t new_gl);
#endif
@ -829,4 +825,24 @@ static inline bool tb_am_enabled(int tb_flags)
#endif
}
#ifdef TARGET_SPARC64
/* win_helper.c */
target_ulong cpu_get_ccr(CPUSPARCState *env1);
void cpu_put_ccr(CPUSPARCState *env1, target_ulong val);
target_ulong cpu_get_cwp64(CPUSPARCState *env1);
void cpu_put_cwp64(CPUSPARCState *env1, int cwp);
static inline uint64_t sparc64_tstate(CPUSPARCState *env)
{
uint64_t tstate = (cpu_get_ccr(env) << 32) |
((env->asi & 0xff) << 24) | ((env->pstate & 0xf3f) << 8) |
cpu_get_cwp64(env);
if (env->def.features & CPU_FEATURE_GL) {
tstate |= (env->gl & 7ULL) << 40;
}
return tstate;
}
#endif
#endif