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authorRichard Henderson <rth@redhat.com>2004-05-06 22:01:01 +0000
committerRichard Henderson <rth@redhat.com>2004-05-06 22:01:01 +0000
commit165634aa4c7ed7b2fe8a47ff24166400a419d141 (patch)
tree769e3eb211ade1b2dce18d6dcb745b293b8f7aef /sysdeps
parent58d87ee17185dbd0b8f927c939343eaed34c8614 (diff)
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* sysdeps/alpha/div_libc.h (_ITOFS, _ITOFT, _FTOIT, _ITOFT2): New. * sysdeps/alpha/divl.S, sysdeps/alpha/divq.S, sysdeps/alpha/divqu.S, sysdeps/alpha/reml.S, sysdeps/alpha/remq.S, sysdeps/alpha/remqu.S: Use them.
2004-05-06 Richard Henderson <rth@redhat.com> * sysdeps/alpha/div_libc.h (_ITOFS, _ITOFT, _FTOIT, _ITOFT2): New. * sysdeps/alpha/divl.S, sysdeps/alpha/divq.S, sysdeps/alpha/divqu.S, sysdeps/alpha/reml.S, sysdeps/alpha/remq.S, sysdeps/alpha/remqu.S: Use them.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/alpha/div_libc.h45
-rw-r--r--sysdeps/alpha/divl.S13
-rw-r--r--sysdeps/alpha/divq.S21
-rw-r--r--sysdeps/alpha/divqu.S21
-rw-r--r--sysdeps/alpha/reml.S11
-rw-r--r--sysdeps/alpha/remq.S22
-rw-r--r--sysdeps/alpha/remqu.S21
7 files changed, 81 insertions, 73 deletions
diff --git a/sysdeps/alpha/div_libc.h b/sysdeps/alpha/div_libc.h
index 98566435ce..27209bd9fa 100644
--- a/sysdeps/alpha/div_libc.h
+++ b/sysdeps/alpha/div_libc.h
@@ -111,3 +111,48 @@ DIVBYZERO:
cfi_endproc
.size DIVBYZERO, .-DIVBYZERO
.endm
+
+/* Like the ev6 instructions, but fall back to stack use on prior machines. */
+
+ .arch ev6
+
+.macro _ITOFS gr, fr, slot
+#ifdef __alpha_fix__
+ itofs \gr, \fr
+#else
+ stl \gr, \slot($sp)
+ lds \fr, \slot($sp)
+#endif
+.endm
+
+.macro _ITOFT gr, fr, slot
+#ifdef __alpha_fix__
+ itoft \gr, \fr
+#else
+ stq \gr, \slot($sp)
+ ldt \fr, \slot($sp)
+#endif
+.endm
+
+.macro _FTOIT fr, gr, slot
+#ifdef __alpha_fix__
+ ftoit \fr, \gr
+#else
+ stt \fr, \slot($sp)
+ ldq \gr, \slot($sp)
+#endif
+.endm
+
+/* Similarly, but move two registers. Schedules better for pre-ev6. */
+
+.macro _ITOFT2 gr1, fr1, slot1, gr2, fr2, slot2
+#ifdef __alpha_fix__
+ itoft \gr1, \fr1
+ itoft \gr2, \fr2
+#else
+ stq \gr1, \slot1($sp)
+ stq \gr2, \slot2($sp)
+ ldt \fr1, \slot1($sp)
+ ldt \fr2, \slot2($sp)
+#endif
+.endm
diff --git a/sysdeps/alpha/divl.S b/sysdeps/alpha/divl.S
index 33fa1187d9..90cd6862a7 100644
--- a/sysdeps/alpha/divl.S
+++ b/sysdeps/alpha/divl.S
@@ -48,25 +48,20 @@ __divl:
EXTEND (X, RV)
EXTEND (Y, AT)
- stq RV, 16(sp)
- stq AT, 24(sp)
-
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 RV, $f0, 16, AT, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
-
divt/c $f0, $f1, $f0
cvttq/c $f0, $f0
- stt $f0, 16(sp)
- ldt $f0, 0(sp)
+ _FTOIT $f0, RV, 16
+ ldt $f0, 0(sp)
ldt $f1, 8(sp)
- ldl RV, 16(sp)
lda sp, FRAME(sp)
cfi_restore ($f0)
cfi_restore ($f1)
cfi_def_cfa_offset (0)
+ sextl RV, RV
ret $31, (RA), 1
cfi_endproc
diff --git a/sysdeps/alpha/divq.S b/sysdeps/alpha/divq.S
index 464536db3d..4df79829f9 100644
--- a/sysdeps/alpha/divq.S
+++ b/sysdeps/alpha/divq.S
@@ -52,17 +52,13 @@ __divq:
that's done, we have at least 22 cycles until its results are
ready -- all the time in the world to figure out how we're
going to use the results. */
- stq X, 16(sp)
- stq Y, 24(sp)
- beq Y, DIVBYZERO
-
stt $f0, 0(sp)
stt $f1, 8(sp)
+ beq Y, DIVBYZERO
cfi_rel_offset ($f0, 0)
cfi_rel_offset ($f1, 8)
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 X, $f0, 16, Y, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
divt/c $f0, $f1, $f0
@@ -77,9 +73,8 @@ __divq:
/* If we get here, we're expecting exact results from the division.
Do nothing else besides convert and clean up. */
cvttq/c $f0, $f0
- stt $f0, 16(sp)
+ _FTOIT $f0, RV, 16
- ldq RV, 16(sp)
ldt $f0, 0(sp)
cfi_restore ($f1)
cfi_remember_state
@@ -117,8 +112,8 @@ $x_big:
$fix_sign_in_ret1:
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
+ _FTOIT $f0, Q, 8
+ .align 3
$fix_sign_in_ret2:
mulq Q, Y, QY
stq t4, 8(sp)
@@ -234,10 +229,8 @@ $fix_sign_in:
blbc t5, $fix_sign_in_ret1
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
- unop
-
+ _FTOIT $f0, Q, 8
+ .align 3
negq Q, Q
br $fix_sign_in_ret2
diff --git a/sysdeps/alpha/divqu.S b/sysdeps/alpha/divqu.S
index 6ff6c035e2..63b575faa7 100644
--- a/sysdeps/alpha/divqu.S
+++ b/sysdeps/alpha/divqu.S
@@ -52,23 +52,20 @@ __divqu:
that's done, we have at least 22 cycles until its results are
ready -- all the time in the world to figure out how we're
going to use the results. */
- stq X, 16(sp)
- stq Y, 24(sp)
- beq Y, DIVBYZERO
-
stt $f0, 0(sp)
stt $f1, 8(sp)
+ beq Y, DIVBYZERO
cfi_rel_offset ($f0, 0)
cfi_rel_offset ($f1, 8)
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 X, $f0, 16, Y, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
blt X, $x_is_neg
divt/c $f0, $f1, $f0
/* Check to see if Y was mis-converted as signed value. */
+ .align 4
ldt $f1, 8(sp)
unop
nop
@@ -81,9 +78,7 @@ __divqu:
/* If we get here, we're expecting exact results from the division.
Do nothing else besides convert and clean up. */
cvttq/c $f0, $f0
- stt $f0, 16(sp)
-
- ldq RV, 16(sp)
+ _FTOIT $f0, RV, 16
ldt $f0, 0(sp)
cfi_remember_state
cfi_restore ($f0)
@@ -101,9 +96,9 @@ $x_is_neg:
ldah AT, 0x5f80 /* 2**64 as float. */
stt $f2, 24(sp)
cfi_rel_offset ($f2, 24)
- stl AT, 16(sp)
- lds $f2, 16(sp)
+ _ITOFS AT, $f2, 16
+ .align 4
addt $f0, $f2, $f0
unop
divt/c $f0, $f1, $f0
@@ -140,10 +135,10 @@ $x_big:
#define QY t3 /* Q*Y */
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
+ _FTOIT $f0, Q, 8
mulq Q, Y, QY
+ .align 4
stq t4, 8(sp)
unop
ldt $f0, 0(sp)
diff --git a/sysdeps/alpha/reml.S b/sysdeps/alpha/reml.S
index c4eb426c5a..1bbb978f66 100644
--- a/sysdeps/alpha/reml.S
+++ b/sysdeps/alpha/reml.S
@@ -50,18 +50,12 @@ __reml:
EXTEND (X, RV)
EXTEND (Y, AT)
- stq RV, 16(sp)
- stq AT, 24(sp)
-
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 RV, $f0, 16, AT, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
-
divt/c $f0, $f1, $f0
cvttq/c $f0, $f0
- stt $f0, 16(sp)
- ldq RV, 16(sp)
+ _FTOIT $f0, RV, 16
ldt $f0, 0(sp)
mull RV, Y, RV
@@ -70,7 +64,6 @@ __reml:
cfi_restore ($f0)
cfi_restore ($f1)
cfi_def_cfa_offset (0)
-
subl X, RV, RV
ret $31, (RA), 1
diff --git a/sysdeps/alpha/remq.S b/sysdeps/alpha/remq.S
index ce527d1055..a8795c8d24 100644
--- a/sysdeps/alpha/remq.S
+++ b/sysdeps/alpha/remq.S
@@ -52,17 +52,13 @@ __remq:
that's done, we have at least 22 cycles until its results are
ready -- all the time in the world to figure out how we're
going to use the results. */
- stq X, 16(sp)
- stq Y, 24(sp)
- beq Y, DIVBYZERO
-
stt $f0, 0(sp)
stt $f1, 8(sp)
+ beq Y, DIVBYZERO
cfi_rel_offset ($f0, 0)
cfi_rel_offset ($f1, 8)
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 X, $f0, 16, Y, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
divt/c $f0, $f1, $f0
@@ -77,9 +73,7 @@ __remq:
/* If we get here, we're expecting exact results from the division.
Do nothing else besides convert, compute remainder, clean up. */
cvttq/c $f0, $f0
- stt $f0, 16(sp)
-
- ldq AT, 16(sp)
+ _FTOIT $f0, AT, 16
mulq AT, Y, AT
ldt $f0, 0(sp)
cfi_restore ($f1)
@@ -87,7 +81,6 @@ __remq:
cfi_restore ($f0)
cfi_def_cfa_offset (0)
lda sp, FRAME(sp)
-
subq X, AT, RV
ret $31, (RA), 1
@@ -120,8 +113,8 @@ $x_big:
$fix_sign_in_ret1:
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
+ _FTOIT $f0, Q, 8
+ .align 3
$fix_sign_in_ret2:
mulq Q, Y, QY
stq t4, 8(sp)
@@ -233,9 +226,8 @@ $fix_sign_in:
bge t1, $fix_sign_in_ret1
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
-
+ _FTOIT $f0, Q, 8
+ .align 3
negq Q, Q
br $fix_sign_in_ret2
diff --git a/sysdeps/alpha/remqu.S b/sysdeps/alpha/remqu.S
index fa2eb626c7..f8deebbbc1 100644
--- a/sysdeps/alpha/remqu.S
+++ b/sysdeps/alpha/remqu.S
@@ -52,19 +52,16 @@ __remqu:
that's done, we have at least 22 cycles until its results are
ready -- all the time in the world to figure out how we're
going to use the results. */
- stq X, 16(sp)
- stq Y, 24(sp)
subq Y, 1, AT
-
stt $f0, 0(sp)
and Y, AT, AT
+
stt $f1, 8(sp)
beq AT, $powerof2
cfi_rel_offset ($f0, 0)
cfi_rel_offset ($f1, 8)
- ldt $f0, 16(sp)
- ldt $f1, 24(sp)
+ _ITOFT2 X, $f0, 16, Y, $f1, 24
cvtqt $f0, $f0
cvtqt $f1, $f1
@@ -82,9 +79,8 @@ __remqu:
/* If we get here, we're expecting exact results from the division.
Do nothing else besides convert, compute remainder, clean up. */
cvttq/c $f0, $f0
- stt $f0, 16(sp)
+ _FTOIT $f0, AT, 16
- ldq AT, 16(sp)
mulq AT, Y, AT
ldt $f0, 0(sp)
lda sp, FRAME(sp)
@@ -93,6 +89,7 @@ __remqu:
cfi_restore ($f1)
cfi_def_cfa_offset (0)
+ .align 4
subq X, AT, RV
ret $31, (RA), 1
@@ -105,15 +102,13 @@ $x_is_neg:
ldah AT, 0x5f80 /* 2**64 as float. */
stt $f2, 24(sp)
cfi_rel_offset ($f2, 24)
- stl AT, 16(sp)
- lds $f2, 16(sp)
+ _ITOFS AT, $f2, 16
addt $f0, $f2, $f0
- unop
divt/c $f0, $f1, $f0
- unop
/* Ok, we've now the divide issued. Continue with other checks. */
+ .align 4
ldt $f1, 8(sp)
unop
ldt $f2, 24(sp)
@@ -144,10 +139,10 @@ $x_big:
#define QY t3 /* Q*Y */
cvttq/c $f0, $f0
- stt $f0, 8(sp)
- ldq Q, 8(sp)
+ _FTOIT $f0, Q, 8
mulq Q, Y, QY
+ .align 4
stq t4, 8(sp)
unop
ldt $f0, 0(sp)