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- Log ----------------------------------------------------------------- commit f9f78a47c59d5cbe762a8a571b66b788b27e45ff Author: Raymond Toy toy.raymond@gmail.com Date: Thu Jul 12 20:49:43 2012 -0700
Remove old inline allocation function and corresponding assembly routines.
diff --git a/src/compiler/x86/macros.lisp b/src/compiler/x86/macros.lisp index 5f7c397..9d955f4 100644 --- a/src/compiler/x86/macros.lisp +++ b/src/compiler/x86/macros.lisp @@ -137,47 +137,6 @@ (unless (and (tn-p size) (location= alloc-tn size)) (inst mov dst-tn size)))
-#+nil -(defun inline-allocation (alloc-tn size) - (let ((ok (gen-label))) - ;; - ;; Load the size first so that the size can be in the same - ;; register as alloc-tn. - (load-size alloc-tn alloc-tn size) - ;; - (inst add alloc-tn - (make-symbol-value-ea '*current-region-free-pointer*)) - (inst cmp alloc-tn - (make-symbol-value-ea '*current-region-end-addr*)) - (inst jmp :be OK) - ;; - ;; Dispatch to the appropriate overflow routine. There is a - ;; routine for each destination. - (ecase (tn-offset alloc-tn) - (#.eax-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_eax") - :foreign))) - (#.ecx-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_ecx") - :foreign))) - (#.edx-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_edx") - :foreign))) - (#.ebx-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_ebx") - :foreign))) - (#.esi-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_esi") - :foreign))) - (#.edi-offset - (inst call (make-fixup (extern-alien-name "alloc_overflow_edi") - :foreign)))) - (emit-label ok) - (inst xchg (make-symbol-value-ea '*current-region-free-pointer*) - alloc-tn)) - (values)) - -;;#+nil (defun inline-allocation (alloc-tn size) (let ((ok (gen-label)) (done (gen-label))) diff --git a/src/lisp/x86-assem.S b/src/lisp/x86-assem.S index 465ab39..46640fa 100644 --- a/src/lisp/x86-assem.S +++ b/src/lisp/x86-assem.S @@ -553,124 +553,6 @@ ENDFUNC(alloc_to_edi)
#ifdef GENCGC
-/* Called from lisp when an inline allocation overflows. - Every register except the result needs to be preserved. - We depend on C to preserve ebx, esi, edi, and ebp. - But where necessary must save eax, ecx, edx. */ - -/* This routine handles an overflow with eax=crfp+size. So the - size=eax-crfp. */ -FUNCDEF(alloc_overflow_eax) - STACK_PROLOGUE(12) - movl %ecx, 8(%esp) # Save ecx - movl %edx, 4(%esp) # Save edx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%eax - movl %eax, (%esp) # Push the size - call GNAME(alloc) - movl 4(%esp), %edx # Restore edx. - movl 8(%esp), %ecx # Restore ecx. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_eax) - -/* This routine handles an overflow with ecx=crfp+size. So the - size=ecx-crfp. */ -FUNCDEF(alloc_overflow_ecx) - STACK_PROLOGUE(12) - movl %eax, 8(%esp) # Save eax - movl %edx, 4(%esp) # Save edx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%ecx - movl %ecx, (%esp) # Push the size - call GNAME(alloc) - movl %eax,%ecx # setup the destination. - movl 4(%esp), %edx # Restore edx. - movl 8(%esp), %eax # Restore eax. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_ecx) - -/* This routine handles an overflow with edx=crfp+size. So the - size=edx-crfp. */ -FUNCDEF(alloc_overflow_edx) - STACK_PROLOGUE(12) - movl %eax, 8(%esp) # Save eax - movl %ecx, 4(%esp) # Save ecx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%edx - movl %edx, (%esp) # Push the size - call GNAME(alloc) - movl %eax,%edx # setup the destination. - movl 4(%esp), %ecx # Restore ecx. - movl 8(%esp), %eax # Restore eax. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_edx) - -/* This routine handles an overflow with ebx=crfp+size. So the - size=ebx-crfp. */ -FUNCDEF(alloc_overflow_ebx) - STACK_PROLOGUE(16) - movl %eax, 12(%esp) # Save eax - movl %ecx, 8(%esp) # Save ecx - movl %edx, 4(%esp) # Save edx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%ebx - movl %ebx, (%esp) # Push the size - call GNAME(alloc) - movl %eax,%ebx # setup the destination. - movl 4(%esp), %edx # Restore edx. - movl 8(%esp), %ecx # Restore ecx. - movl 12(%esp), %eax # Restore eax. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_ebx) - -/* This routine handles an overflow with esi=crfp+size. So the - size=esi-crfp. */ -FUNCDEF(alloc_overflow_esi) - STACK_PROLOGUE(16) - movl %eax, 12(%esp) # Save eax - movl %ecx, 8(%esp) # Save ecx - movl %edx, 4(%esp) # Save edx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%esi - movl %esi, (%esp) # Push the size - call GNAME(alloc) - movl %eax,%esi # setup the destination. - movl 4(%esp), %edx # Restore edx. - movl 8(%esp), %ecx # Restore ecx. - movl 12(%esp), %eax # Restore eax. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_esi) - -/* This routine handles an overflow with edi=crfp+size. So the - size=edi-crfp. */ -FUNCDEF(alloc_overflow_edi) - STACK_PROLOGUE(16) - movl %eax, 12(%esp) # Save eax - movl %ecx, 8(%esp) # Save ecx - movl %edx, 4(%esp) # Save edx - /* Calculate the size for the allocation. */ - subl CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%edi - movl %edi, (%esp) # Push the size - call GNAME(alloc) - movl %eax,%edi # setup the destination. - movl 4(%esp), %edx # Restore edx. - movl 8(%esp), %ecx # Restore ecx. - movl 12(%esp), %eax # Restore eax. - STACK_EPILOGUE - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret -ENDFUNC(alloc_overflow_edi) - /* * alloc_overflow_x87 and alloc_overflow_sse2 must not be called from * C because it doesn't follow C conventions. @@ -703,7 +585,9 @@ FUNCDEF(alloc_overflow_sse2) movl %edx, 16(%esp) ldmxcsr 16(%esp) # Get new mxcsr value movl %eax, (%esp) # Put size on stack for first arg to alloc() + call GNAME(alloc) + movl 4(%esp), %edx # Restore edx and ecx registers. eax has the return value. movl 8(%esp), %ecx ldmxcsr 12(%esp)
commit 2e95a0bb1011de96626271d6c4e367a6a8e7a6a4 Author: Raymond Toy toy.raymond@gmail.com Date: Wed Jul 11 22:00:07 2012 -0700
Clean up alloc overflow routine. Cross-compile needed.
src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp: o X86 cross-compile script
src/compiler/x86/macros.lisp: o New inline-allocation to call our new overflow routine.
src/lisp/x86-assem.S: o New alloc_overflow routine.
src/tools/cross-scripts/cross-x86-x86.lisp: o Export all symbols in VM that are external symbols in OLD-VM with the corresponding symbol name.
diff --git a/src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp b/src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp new file mode 100644 index 0000000..d9a5a3e --- /dev/null +++ b/src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp @@ -0,0 +1,8 @@ +;;; Bootstrap for building the 2012-08 snapshot from the 2012-07 +;;; snapshot. The inline allocation routines are changing. + +;;; Nothing fancy needed; just use do a simple cross-build-world using +;;; this as the script. +#+x86 +(load "target:tools/cross-scripts/cross-x86-x86") + diff --git a/src/compiler/x86/macros.lisp b/src/compiler/x86/macros.lisp index 731bcf4..5f7c397 100644 --- a/src/compiler/x86/macros.lisp +++ b/src/compiler/x86/macros.lisp @@ -137,6 +137,7 @@ (unless (and (tn-p size) (location= alloc-tn size)) (inst mov dst-tn size)))
+#+nil (defun inline-allocation (alloc-tn size) (let ((ok (gen-label))) ;; @@ -176,6 +177,50 @@ alloc-tn)) (values))
+;;#+nil +(defun inline-allocation (alloc-tn size) + (let ((ok (gen-label)) + (done (gen-label))) + ;; + ;; Load the size first so that the size can be in the same + ;; register as alloc-tn. + (load-size alloc-tn alloc-tn size) + ;; + (inst add alloc-tn + (make-symbol-value-ea '*current-region-free-pointer*)) + (inst cmp alloc-tn + (make-symbol-value-ea '*current-region-end-addr*)) + (inst jmp :be OK) + + ;; Inline allocation didn't work so we need to call alloc, carefully. + + ;; Recompute the size. Can't just reload size because it might + ;; have already been destroyed if size = alloc-tn (which does + ;; happen). + (inst sub alloc-tn (make-symbol-value-ea '*current-region-free-pointer*)) + (case (tn-offset alloc-tn) + (#.eax-offset + (inst call (make-fixup (extern-alien-name #-sse2 "alloc_overflow_x87" + #+sse2 "alloc_overflow_sse2") + :foreign)) + (inst jmp done)) + (t + (inst push eax-tn) ; Save any value in eax + (inst mov eax-tn alloc-tn) + (inst call (make-fixup (extern-alien-name #-sse2 "alloc_overflow_x87" + #+sse2 "alloc_overflow_sse2") + :foreign)) + (inst mov alloc-tn eax-tn) ; Save allocated address in alloc-tn + (inst pop eax-tn) ; Restore old value of eax + (inst jmp done))) + + (emit-label ok) + (inst xchg (make-symbol-value-ea '*current-region-free-pointer*) + alloc-tn) + (emit-label done)) + + (values)) + (defun not-inline-allocation (alloc-tn size) ;; C call to allocate via dispatch routines. Each destination has a ;; special entry point. The size may be a register or a constant. @@ -240,7 +285,7 @@ Result-TN." `(pseudo-atomic (allocation ,result-tn (pad-data-block ,size) ,inline) - (storew (logior (ash (1- ,size) vm:type-bits) ,type-code) ,result-tn) + (storew (logior (ash (1- ,size) vm::type-bits) ,type-code) ,result-tn) (inst lea ,result-tn (make-ea :byte :base ,result-tn :disp other-pointer-type)) ,@forms)) diff --git a/src/lisp/x86-assem.S b/src/lisp/x86-assem.S index 19be973..465ab39 100644 --- a/src/lisp/x86-assem.S +++ b/src/lisp/x86-assem.S @@ -671,7 +671,47 @@ FUNCDEF(alloc_overflow_edi) ret ENDFUNC(alloc_overflow_edi)
-#endif +/* + * alloc_overflow_x87 and alloc_overflow_sse2 must not be called from + * C because it doesn't follow C conventions. + * + * On entry: + * %eax = bytes to allocate + * On exit: + * %eax = address + */ +FUNCDEF(alloc_overflow_x87) + STACK_PROLOGUE(12) + movl %ecx, 8(%esp) # Save ecx and edx registers + movl %edx, 4(%esp) + movl %eax, (%esp) # Put size on stack for first arg to alloc() + call GNAME(alloc) + movl 4(%esp), %edx # Restore edx and ecx registers. eax has the return value. + movl 8(%esp), %ecx + STACK_EPILOGUE + ret +ENDFUNC(alloc_overflow_x87) + +FUNCDEF(alloc_overflow_sse2) + STACK_PROLOGUE(20) + movl %ecx, 8(%esp) # Save ecx and edx registers + movl %edx, 4(%esp) + stmxcsr 12(%esp) # Save MXCSR + /* Clear the exceptions that might occurred */ + movl 12(%esp), %edx + and $-64, %edx # Clear the exceptions + movl %edx, 16(%esp) + ldmxcsr 16(%esp) # Get new mxcsr value + movl %eax, (%esp) # Put size on stack for first arg to alloc() + call GNAME(alloc) + movl 4(%esp), %edx # Restore edx and ecx registers. eax has the return value. + movl 8(%esp), %ecx + ldmxcsr 12(%esp) + STACK_EPILOGUE + ret +ENDFUNC(alloc_overflow_sse2) + +#endif /* GENCGC */
#ifdef LINKAGE_TABLE
diff --git a/src/tools/cross-scripts/cross-x86-x86.lisp b/src/tools/cross-scripts/cross-x86-x86.lisp index aa4d84d..fa4e31c 100644 --- a/src/tools/cross-scripts/cross-x86-x86.lisp +++ b/src/tools/cross-scripts/cross-x86-x86.lisp @@ -46,6 +46,9 @@ (export 'vm::fixup-code-object "VM") (export 'vm::sanctify-for-execution "VM")
+(do-external-symbols (sym "OLD-VM") + (export (intern (symbol-name sym) "VM") "VM")) + (load "target:tools/comcom")
;;; Load the new backend.
-----------------------------------------------------------------------
Summary of changes: src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp | 8 ++ src/compiler/x86/macros.lisp | 52 +++++---- src/lisp/x86-assem.S | 142 +++++----------------- src/tools/cross-scripts/cross-x86-x86.lisp | 3 + 4 files changed, 72 insertions(+), 133 deletions(-) create mode 100644 src/bootfiles/20c/boot-2012-07-1-x86-cross.lisp
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