[git] CMU Common Lisp branch master updated. begin-x87-removal-9-gd3bc3ac
Raymond Toy
rtoy at common-lisp.net
Sun Apr 13 18:25:31 UTC 2014
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- Log -----------------------------------------------------------------
commit d3bc3ac7a83c9c06dabf37ebe9e781bcfcfa5518
Author: Raymond Toy <toy.raymond at gmail.com>
Date: Sun Apr 13 11:25:11 2014 -0700
Remove commented code and some redundant jmps.
diff --git a/src/lisp/x86-assem.S b/src/lisp/x86-assem.S
index fd52d39..f3b4344 100644
--- a/src/lisp/x86-assem.S
+++ b/src/lisp/x86-assem.S
@@ -117,13 +117,6 @@ FUNCDEF(call_into_lisp)
movl %esp,%ebp # establish new frame
/* Save the NPX state */
-#if 0
- fwait # Catch any pending NPX exceptions.
- /* Save the SSE2 for X87 state */
- mov GNAME(fpu_mode), %eax
- cmp $2, %eax # SSE2 mode?
- jne x87_save
-#endif
movl %esp, %eax # Remember the current stack pointer
/*
* The SSE state is 512 bytes, but we need 16 more because we
@@ -133,25 +126,6 @@ FUNCDEF(call_into_lisp)
andl $-16, %esp # fxsave needs 16-byte alignment
fxsave (%esp)
pushl %eax # Save the old stack pointer
- fninit # Reset fpu, just in case
- jmp npx_save_done
-#if 0
-x87_save:
- subl $108,%esp # Make room for the NPX state.
- fnsave (%esp) # Resets NPX
-
- movl (%esp),%eax # Load NPX control word
- andl $0xfffff3ff,%eax # Set rounding mode to nearest
-#ifdef type_LongFloat
- orl $0x00000300,%eax # Set precision to 64 bits
-#else
- orl $0x00000200,%eax # Set precision to 53 bits
-#endif
- pushl %eax
- fldcw (%esp) # Recover modes
- popl %eax
-#endif
-npx_save_done:
/* Save C regs: ebx esi edi */
pushl %ebx
pushl %esi
@@ -219,22 +193,9 @@ Ldone:
popl %ebx
/* Restore the NPX state */
-#if 0
- /* Restore SSE2 state? */
- mov GNAME(fpu_mode), %eax
- cmp $2, %eax # SSE2 mode?
- jne x87_restore
-#endif
popl %eax # Get the old stack pointer
fxrstor (%esp) # Restore the SSE state
movl %eax, %esp # Now really restore the old stack pointer
- jmp npx_restore_done
-#if 0
-x87_restore:
- frstor (%esp)
- addl $108, %esp
-#endif
-npx_restore_done:
popl %ebp # c-sp
movl %edx,%eax # c-val
commit f94c7fc82bcfc0da0906ac64891f22e2eca169ae
Author: Raymond Toy <toy.raymond at gmail.com>
Date: Sun Apr 13 10:59:47 2014 -0700
Comment out x87 stuff from call_into_lisp.
diff --git a/src/lisp/x86-assem.S b/src/lisp/x86-assem.S
index f9dee43..fd52d39 100644
--- a/src/lisp/x86-assem.S
+++ b/src/lisp/x86-assem.S
@@ -117,11 +117,13 @@ FUNCDEF(call_into_lisp)
movl %esp,%ebp # establish new frame
/* Save the NPX state */
+#if 0
fwait # Catch any pending NPX exceptions.
/* Save the SSE2 for X87 state */
mov GNAME(fpu_mode), %eax
cmp $2, %eax # SSE2 mode?
jne x87_save
+#endif
movl %esp, %eax # Remember the current stack pointer
/*
* The SSE state is 512 bytes, but we need 16 more because we
@@ -133,7 +135,7 @@ FUNCDEF(call_into_lisp)
pushl %eax # Save the old stack pointer
fninit # Reset fpu, just in case
jmp npx_save_done
-
+#if 0
x87_save:
subl $108,%esp # Make room for the NPX state.
fnsave (%esp) # Resets NPX
@@ -148,6 +150,7 @@ x87_save:
pushl %eax
fldcw (%esp) # Recover modes
popl %eax
+#endif
npx_save_done:
/* Save C regs: ebx esi edi */
pushl %ebx
@@ -216,17 +219,21 @@ Ldone:
popl %ebx
/* Restore the NPX state */
+#if 0
/* Restore SSE2 state? */
mov GNAME(fpu_mode), %eax
cmp $2, %eax # SSE2 mode?
jne x87_restore
+#endif
popl %eax # Get the old stack pointer
fxrstor (%esp) # Restore the SSE state
movl %eax, %esp # Now really restore the old stack pointer
jmp npx_restore_done
+#if 0
x87_restore:
frstor (%esp)
addl $108, %esp
+#endif
npx_restore_done:
popl %ebp # c-sp
commit 6bba234d4dc71255cf4b9c6a0d418147781c564b
Author: Raymond Toy <toy.raymond at gmail.com>
Date: Sat Apr 12 18:10:46 2014 -0700
More x87 removal from sse2-c-call.lisp
* Remove frobbing of the FPU modes from alloc and dealloc.
* Use 16-byte alignment for all platforms. It's harmless for those
that don't require it.
diff --git a/src/compiler/x86/sse2-c-call.lisp b/src/compiler/x86/sse2-c-call.lisp
index 83f21b5..1e827d3 100644
--- a/src/compiler/x86/sse2-c-call.lisp
+++ b/src/compiler/x86/sse2-c-call.lisp
@@ -71,19 +71,11 @@
(:generator 0
(assert (location= result esp-tn))
- #+(or linux)
- (progn
- ;; Is this needed with sse2?
- (inst sub esp-tn 4)
- (inst fnstcw (make-ea :word :base esp-tn))
- (inst and (make-ea :word :base esp-tn) #xcff)
- (inst or (make-ea :word :base esp-tn) #x300)
- (inst fldcw (make-ea :word :base esp-tn))
- (inst add esp-tn 4))
(unless (zerop amount)
(let ((delta (logandc2 (+ amount 3) 3)))
(inst sub esp-tn delta)))
- #+darwin (inst and esp-tn #xfffffff0)
+ ;; Align the stack to a 16-byte boundary.
+ (inst and esp-tn #xfffffff0)
(move result esp-tn)))
(define-vop (dealloc-number-stack-space)
@@ -91,15 +83,5 @@
(:generator 0
(unless (zerop amount)
(let ((delta (logandc2 (+ amount 3) 3)))
- (inst add esp-tn delta)))
- #+(or linux)
- (progn
- ;; Is this needed with sse2?
- (inst sub esp-tn 4)
- (inst fnstcw (make-ea :word :base esp-tn))
- (inst and (make-ea :word :base esp-tn) #xcff)
- (inst or (make-ea :word :base esp-tn) #x200)
- (inst fldcw (make-ea :word :base esp-tn))
- (inst wait)
- (inst add esp-tn 4))))
+ (inst add esp-tn delta)))))
-----------------------------------------------------------------------
Summary of changes:
src/compiler/x86/sse2-c-call.lisp | 24 +++---------------------
src/lisp/x86-assem.S | 32 --------------------------------
2 files changed, 3 insertions(+), 53 deletions(-)
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