diff options
| -rw-r--r-- | sys/src/9/pc/l.s | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/sys/src/9/pc/l.s b/sys/src/9/pc/l.s index 661e66422..44071a634 100644 --- a/sys/src/9/pc/l.s +++ b/sys/src/9/pc/l.s @@ -570,15 +570,8 @@ _aamloop: * FNxxx variations) so WAIT instructions must be explicitly placed in the * code as necessary. */ -#define FPOFF(l) ;\ - MOVL CR0, AX ;\ - ANDL $0xC, AX /* EM, TS */ ;\ - CMPL AX, $0x8 ;\ - JEQ l ;\ - WAIT ;\ -l: ;\ +#define FPOFF ;\ MOVL CR0, AX ;\ - ANDL $~0x4, AX /* EM=0 */ ;\ ORL $0x28, AX /* NE=1, TS=1 */ ;\ MOVL AX, CR0 @@ -586,9 +579,9 @@ l: ;\ MOVL CR0, AX ;\ ANDL $~0xC, AX /* EM=0, TS=0 */ ;\ MOVL AX, CR0 - + TEXT fpoff(SB), $0 /* disable */ - FPOFF(l1) + FPOFF RET TEXT fpinit(SB), $0 /* enable and init */ @@ -606,10 +599,10 @@ TEXT fpinit(SB), $0 /* enable and init */ TEXT fpx87save0(SB), $0 /* save state and disable */ MOVL p+0(FP), AX FSAVE 0(AX) /* no WAIT */ - FPOFF(l2) + FPOFF RET -TEXT fpx87restore0(SB), $0 /* enable and restore state */ +TEXT fpx87restore0(SB), $0 /* enable and restore state */ FPON MOVL p+0(FP), AX FRSTOR 0(AX) @@ -628,13 +621,13 @@ TEXT fpenv(SB), $0 /* save state without waiting */ TEXT fpclear(SB), $0 /* clear pending exceptions */ FPON FCLEX /* no WAIT */ - FPOFF(l3) + FPOFF RET TEXT fpssesave0(SB), $0 /* save state and disable */ MOVL p+0(FP), AX FXSAVE 0(AX) /* no WAIT */ - FPOFF(l4) + FPOFF RET TEXT fpsserestore0(SB), $0 /* enable and restore state */ |