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Diffstat (limited to 'target/ppc/int_helper.c')
-rw-r--r--target/ppc/int_helper.c129
1 files changed, 33 insertions, 96 deletions
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index 8efc283388..162add561e 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -457,10 +457,25 @@ void helper_lvsr(ppc_avr_t *r, target_ulong sh)
}
}
-void helper_mtvscr(CPUPPCState *env, ppc_avr_t *r)
+void helper_mtvscr(CPUPPCState *env, uint32_t vscr)
{
- env->vscr = r->VsrW(3);
- set_flush_to_zero(vscr_nj, &env->vec_status);
+ env->vscr = vscr & ~(1u << VSCR_SAT);
+ /* Which bit we set is completely arbitrary, but clear the rest. */
+ env->vscr_sat.u64[0] = vscr & (1u << VSCR_SAT);
+ env->vscr_sat.u64[1] = 0;
+ set_flush_to_zero((vscr >> VSCR_NJ) & 1, &env->vec_status);
+}
+
+uint32_t helper_mfvscr(CPUPPCState *env)
+{
+ uint32_t sat = (env->vscr_sat.u64[0] | env->vscr_sat.u64[1]) != 0;
+ return env->vscr | (sat << VSCR_SAT);
+}
+
+static inline void set_vscr_sat(CPUPPCState *env)
+{
+ /* The choice of non-zero value is arbitrary. */
+ env->vscr_sat.u32[0] = 1;
}
void helper_vaddcuw(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
@@ -515,13 +530,6 @@ void helper_vprtybq(ppc_avr_t *r, ppc_avr_t *b)
r->element[i] = a->element[i] op b->element[i]; \
} \
}
-#define VARITH(suffix, element) \
- VARITH_DO(add##suffix, +, element) \
- VARITH_DO(sub##suffix, -, element)
-VARITH(ubm, u8)
-VARITH(uhm, u16)
-VARITH(uwm, u32)
-VARITH(udm, u64)
VARITH_DO(muluwm, *, u32)
#undef VARITH_DO
#undef VARITH
@@ -563,27 +571,17 @@ VARITHFPFMA(nmsubfp, float_muladd_negate_result | float_muladd_negate_c);
}
#define VARITHSAT_DO(name, op, optype, cvt, element) \
- void helper_v##name(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
- ppc_avr_t *b) \
+ void helper_v##name(ppc_avr_t *r, ppc_avr_t *vscr_sat, \
+ ppc_avr_t *a, ppc_avr_t *b, uint32_t desc) \
{ \
int sat = 0; \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
- switch (sizeof(r->element[0])) { \
- case 1: \
- VARITHSAT_CASE(optype, op, cvt, element); \
- break; \
- case 2: \
- VARITHSAT_CASE(optype, op, cvt, element); \
- break; \
- case 4: \
- VARITHSAT_CASE(optype, op, cvt, element); \
- break; \
- } \
+ VARITHSAT_CASE(optype, op, cvt, element); \
} \
if (sat) { \
- env->vscr |= (1 << VSCR_SAT); \
+ vscr_sat->u32[0] = 1; \
} \
}
#define VARITHSAT_SIGNED(suffix, element, optype, cvt) \
@@ -855,7 +853,7 @@ void helper_vcmpbfp_dot(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
} \
} \
if (sat) { \
- env->vscr |= (1 << VSCR_SAT); \
+ set_vscr_sat(env); \
} \
}
VCT(uxs, cvtsduw, u32)
@@ -902,7 +900,7 @@ void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -919,37 +917,10 @@ void helper_vmhraddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
-#define VMINMAX_DO(name, compare, element) \
- void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
- { \
- int i; \
- \
- for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
- if (a->element[i] compare b->element[i]) { \
- r->element[i] = b->element[i]; \
- } else { \
- r->element[i] = a->element[i]; \
- } \
- } \
- }
-#define VMINMAX(suffix, element) \
- VMINMAX_DO(min##suffix, >, element) \
- VMINMAX_DO(max##suffix, <, element)
-VMINMAX(sb, s8)
-VMINMAX(sh, s16)
-VMINMAX(sw, s32)
-VMINMAX(sd, s64)
-VMINMAX(ub, u8)
-VMINMAX(uh, u16)
-VMINMAX(uw, u32)
-VMINMAX(ud, u64)
-#undef VMINMAX_DO
-#undef VMINMAX
-
void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int i;
@@ -1031,7 +1002,7 @@ void helper_vmsumshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -1084,7 +1055,7 @@ void helper_vmsumuhs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -1601,7 +1572,7 @@ void helper_vpkpx(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
} \
*r = result; \
if (dosat && sat) { \
- env->vscr |= (1 << VSCR_SAT); \
+ set_vscr_sat(env); \
} \
}
#define I(x, y) (x)
@@ -1876,25 +1847,6 @@ void helper_vslo(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
#endif
}
-/* Experimental testing shows that hardware masks the immediate. */
-#define _SPLAT_MASKED(element) (splat & (ARRAY_SIZE(r->element) - 1))
-#define SPLAT_ELEMENT(element) _SPLAT_MASKED(element)
-#define VSPLT(suffix, element, access) \
- void helper_vsplt##suffix(ppc_avr_t *r, ppc_avr_t *b, uint32_t splat) \
- { \
- uint32_t s = b->access(SPLAT_ELEMENT(element)); \
- int i; \
- \
- for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
- r->access(i) = s; \
- } \
- }
-VSPLT(b, u8, VsrB)
-VSPLT(h, u16, VsrH)
-VSPLT(w, u32, VsrW)
-#undef VSPLT
-#undef SPLAT_ELEMENT
-#undef _SPLAT_MASKED
#if defined(HOST_WORDS_BIGENDIAN)
#define VINSERT(suffix, element) \
void helper_vinsert##suffix(ppc_avr_t *r, ppc_avr_t *b, uint32_t index) \
@@ -2005,21 +1957,6 @@ VNEG(vnegw, s32)
VNEG(vnegd, s64)
#undef VNEG
-#define VSPLTI(suffix, element, splat_type) \
- void helper_vspltis##suffix(ppc_avr_t *r, uint32_t splat) \
- { \
- splat_type x = (int8_t)(splat << 3) >> 3; \
- int i; \
- \
- for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
- r->element[i] = x; \
- } \
- }
-VSPLTI(b, s8, int8_t)
-VSPLTI(h, s16, int16_t)
-VSPLTI(w, s32, int32_t)
-#undef VSPLTI
-
#define VSR(suffix, element, mask) \
void helper_vsr##suffix(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
@@ -2079,7 +2016,7 @@ void helper_vsumsws(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
*r = result;
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -2102,7 +2039,7 @@ void helper_vsum2sws(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
*r = result;
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -2121,7 +2058,7 @@ void helper_vsum4sbs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -2138,7 +2075,7 @@ void helper_vsum4shs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
@@ -2157,7 +2094,7 @@ void helper_vsum4ubs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
}
if (sat) {
- env->vscr |= (1 << VSCR_SAT);
+ set_vscr_sat(env);
}
}
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-12 22:05:59 +0000