Revision 8422b113 target-i386/op.c
| b/target-i386/op.c | ||
|---|---|---|
| 1952 | 1952 |
|
| 1953 | 1953 |
/* FPU operations */ |
| 1954 | 1954 |
|
| 1955 |
/* XXX: handle nans */ |
|
| 1956 | 1955 |
void OPPROTO op_fcom_ST0_FT0(void) |
| 1957 | 1956 |
{
|
| 1958 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
|
| 1959 |
if (ST0 < FT0) |
|
| 1960 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
|
| 1961 |
else if (ST0 == FT0) |
|
| 1962 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
|
| 1957 |
int cc; |
|
| 1958 |
switch(floatx_compare(ST0, FT0, &env->fp_status)) {
|
|
| 1959 |
case -1: |
|
| 1960 |
cc = 0x0100; |
|
| 1961 |
break; |
|
| 1962 |
case 0: |
|
| 1963 |
cc = 0x4000; |
|
| 1964 |
break; |
|
| 1965 |
case 1: |
|
| 1966 |
cc = 0x0000; |
|
| 1967 |
break; |
|
| 1968 |
case 2: |
|
| 1969 |
default: |
|
| 1970 |
cc = 0x4500; |
|
| 1971 |
break; |
|
| 1972 |
} |
|
| 1973 |
env->fpus = (env->fpus & ~0x4500) | cc; |
|
| 1963 | 1974 |
FORCE_RET(); |
| 1964 | 1975 |
} |
| 1965 | 1976 |
|
| 1966 |
/* XXX: handle nans */ |
|
| 1967 | 1977 |
void OPPROTO op_fucom_ST0_FT0(void) |
| 1968 | 1978 |
{
|
| 1969 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
|
| 1970 |
if (ST0 < FT0) |
|
| 1971 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
|
| 1972 |
else if (ST0 == FT0) |
|
| 1973 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
|
| 1979 |
int cc; |
|
| 1980 |
switch(floatx_compare_quiet(ST0, FT0, &env->fp_status)) {
|
|
| 1981 |
case -1: |
|
| 1982 |
cc = 0x0100; |
|
| 1983 |
break; |
|
| 1984 |
case 0: |
|
| 1985 |
cc = 0x4000; |
|
| 1986 |
break; |
|
| 1987 |
case 1: |
|
| 1988 |
cc = 0x0000; |
|
| 1989 |
break; |
|
| 1990 |
case 2: |
|
| 1991 |
default: |
|
| 1992 |
cc = 0x4500; |
|
| 1993 |
break; |
|
| 1994 |
} |
|
| 1995 |
env->fpus = (env->fpus & ~0x4500) | cc; |
|
| 1974 | 1996 |
FORCE_RET(); |
| 1975 | 1997 |
} |
| 1976 | 1998 |
|
| 1977 |
/* XXX: handle nans */ |
|
| 1978 | 1999 |
void OPPROTO op_fcomi_ST0_FT0(void) |
| 1979 | 2000 |
{
|
| 1980 |
int eflags; |
|
| 2001 |
int eflags, cc; |
|
| 2002 |
switch(floatx_compare(ST0, FT0, &env->fp_status)) {
|
|
| 2003 |
case -1: |
|
| 2004 |
cc = CC_C; |
|
| 2005 |
break; |
|
| 2006 |
case 0: |
|
| 2007 |
cc = CC_Z; |
|
| 2008 |
break; |
|
| 2009 |
case 1: |
|
| 2010 |
cc = 0; |
|
| 2011 |
break; |
|
| 2012 |
case 2: |
|
| 2013 |
default: |
|
| 2014 |
cc = CC_Z | CC_P | CC_C; |
|
| 2015 |
break; |
|
| 2016 |
} |
|
| 1981 | 2017 |
eflags = cc_table[CC_OP].compute_all(); |
| 1982 |
eflags &= ~(CC_Z | CC_P | CC_C); |
|
| 1983 |
if (ST0 < FT0) |
|
| 1984 |
eflags |= CC_C; |
|
| 1985 |
else if (ST0 == FT0) |
|
| 1986 |
eflags |= CC_Z; |
|
| 2018 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | cc; |
|
| 1987 | 2019 |
CC_SRC = eflags; |
| 1988 | 2020 |
FORCE_RET(); |
| 1989 | 2021 |
} |
| 1990 | 2022 |
|
| 1991 |
/* XXX: handle nans */ |
|
| 1992 | 2023 |
void OPPROTO op_fucomi_ST0_FT0(void) |
| 1993 | 2024 |
{
|
| 1994 |
int eflags; |
|
| 2025 |
int eflags, cc; |
|
| 2026 |
switch(floatx_compare_quiet(ST0, FT0, &env->fp_status)) {
|
|
| 2027 |
case -1: |
|
| 2028 |
cc = CC_C; |
|
| 2029 |
break; |
|
| 2030 |
case 0: |
|
| 2031 |
cc = CC_Z; |
|
| 2032 |
break; |
|
| 2033 |
case 1: |
|
| 2034 |
cc = 0; |
|
| 2035 |
break; |
|
| 2036 |
case 2: |
|
| 2037 |
default: |
|
| 2038 |
cc = CC_Z | CC_P | CC_C; |
|
| 2039 |
break; |
|
| 2040 |
} |
|
| 1995 | 2041 |
eflags = cc_table[CC_OP].compute_all(); |
| 1996 |
eflags &= ~(CC_Z | CC_P | CC_C); |
|
| 1997 |
if (ST0 < FT0) |
|
| 1998 |
eflags |= CC_C; |
|
| 1999 |
else if (ST0 == FT0) |
|
| 2000 |
eflags |= CC_Z; |
|
| 2042 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | cc; |
|
| 2001 | 2043 |
CC_SRC = eflags; |
| 2002 | 2044 |
FORCE_RET(); |
| 2003 | 2045 |
} |
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