diff options
Diffstat (limited to 'target/ppc/int_helper.c')
| -rw-r--r-- | target/ppc/int_helper.c | 129 |
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); } } |