Revision 1497c961 target-arm/op.c
| b/target-arm/op.c | ||
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FORCE_RET(); |
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} |
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/* misc */ |
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#define SIGNBIT (uint32_t)0x80000000 |
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/* saturating arithmetic */ |
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void OPPROTO op_addl_T0_T1_setq(void) |
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{
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uint32_t res; |
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res = T0 + T1; |
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if (((res ^ T0) & SIGNBIT) && !((T0 ^ T1) & SIGNBIT)) |
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env->QF = 1; |
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T0 = res; |
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FORCE_RET(); |
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} |
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void OPPROTO op_addl_T0_T1_saturate(void) |
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{
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uint32_t res; |
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res = T0 + T1; |
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if (((res ^ T0) & SIGNBIT) && !((T0 ^ T1) & SIGNBIT)) {
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env->QF = 1; |
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if (T0 & SIGNBIT) |
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T0 = 0x80000000; |
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else |
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T0 = 0x7fffffff; |
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} |
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else |
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T0 = res; |
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FORCE_RET(); |
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} |
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void OPPROTO op_subl_T0_T1_saturate(void) |
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{
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uint32_t res; |
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res = T0 - T1; |
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if (((res ^ T0) & SIGNBIT) && ((T0 ^ T1) & SIGNBIT)) {
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env->QF = 1; |
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if (T0 & SIGNBIT) |
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T0 = 0x80000000; |
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else |
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T0 = 0x7fffffff; |
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} |
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else |
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T0 = res; |
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FORCE_RET(); |
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} |
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void OPPROTO op_double_T1_saturate(void) |
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{
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int32_t val; |
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val = T1; |
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if (val >= 0x40000000) {
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T1 = 0x7fffffff; |
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env->QF = 1; |
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} else if (val <= (int32_t)0xc0000000) {
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T1 = 0x80000000; |
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env->QF = 1; |
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} else {
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T1 = val << 1; |
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} |
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FORCE_RET(); |
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} |
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/* Unsigned saturating arithmetic for NEON. */ |
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void OPPROTO op_addl_T0_T1_usaturate(void) |
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{
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uint32_t res; |
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res = T0 + T1; |
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if (res < T0) {
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env->QF = 1; |
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T0 = 0xffffffff; |
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} else {
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T0 = res; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO op_subl_T0_T1_usaturate(void) |
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{
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uint32_t res; |
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res = T0 - T1; |
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if (res > T0) {
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env->QF = 1; |
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T0 = 0; |
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} else {
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T0 = res; |
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} |
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FORCE_RET(); |
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} |
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/* exceptions */ |
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void OPPROTO op_swi(void) |
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