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target-sparc: implement UA2005 GL register

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Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
This commit is contained in:
Artyom Tarasenko 2016-06-07 18:34:49 +02:00
parent 6e040755f1
commit cbc3a6a4cc
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GPG key ID: 3360C3F7411A125F
6 changed files with 58 additions and 7 deletions
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40
target/sparc/win_helper.c
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@ -290,6 +290,10 @@ void helper_wrcwp(CPUSPARCState *env, target_ulong new_cwp)
static inline uint64_t *get_gregset(CPUSPARCState *env, uint32_t pstate)
{
if (env->def->features & CPU_FEATURE_GL) {
return env->glregs + (env->gl & 7) * 8;
}
switch (pstate) {
default:
trace_win_helper_gregset_error(pstate);
@ -305,14 +309,40 @@ static inline uint64_t *get_gregset(CPUSPARCState *env, uint32_t pstate)
}
}
static inline uint64_t *get_gl_gregset(CPUSPARCState *env, uint32_t gl)
{
return env->glregs + (gl & 7) * 8;
}
/* Switch global register bank */
void cpu_gl_switch_gregs(CPUSPARCState *env, uint32_t new_gl)
{
uint64_t *src, *dst;
src = get_gl_gregset(env, new_gl);
dst = get_gl_gregset(env, env->gl);
if (src != dst) {
memcpy32(dst, env->gregs);
memcpy32(env->gregs, src);
}
}
void helper_wrgl(CPUSPARCState *env, target_ulong new_gl)
{
cpu_gl_switch_gregs(env, new_gl & 7);
env->gl = new_gl & 7;
}
void cpu_change_pstate(CPUSPARCState *env, uint32_t new_pstate)
{
uint32_t pstate_regs, new_pstate_regs;
uint64_t *src, *dst;
if (env->def->features & CPU_FEATURE_GL) {
/* PS_AG is not implemented in this case */
new_pstate &= ~PS_AG;
/* PS_AG, IG and MG are not implemented in this case */
new_pstate &= ~(PS_AG | PS_IG | PS_MG);
env->pstate = new_pstate;
return;
}
pstate_regs = env->pstate & 0xc01;
@ -367,7 +397,10 @@ void helper_done(CPUSPARCState *env)
cpu_change_pstate(env, (tsptr->tstate >> 8) & 0xf3f);
cpu_put_cwp64(env, tsptr->tstate & 0xff);
if (cpu_has_hypervisor(env)) {
uint32_t new_gl = (tsptr->tstate >> 40) & 7;
env->hpstate = env->htstate[env->tl];
cpu_gl_switch_gregs(env, new_gl);
env->gl = new_gl;
}
env->tl--;
@ -391,7 +424,10 @@ void helper_retry(CPUSPARCState *env)
cpu_change_pstate(env, (tsptr->tstate >> 8) & 0xf3f);
cpu_put_cwp64(env, tsptr->tstate & 0xff);
if (cpu_has_hypervisor(env)) {
uint32_t new_gl = (tsptr->tstate >> 40) & 7;
env->hpstate = env->htstate[env->tl];
cpu_gl_switch_gregs(env, new_gl);
env->gl = new_gl;
}
env->tl--;