! Copyright (C) 2005, 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors assocs alien alien.c-types arrays strings
-cpu.x86.assembler cpu.x86.assembler.private cpu.architecture
-kernel kernel.private math memory namespaces make sequences
-words system layouts combinators math.order fry locals
-compiler.constants compiler.cfg.registers
-compiler.cfg.instructions compiler.cfg.intrinsics
-compiler.cfg.stack-frame compiler.codegen compiler.codegen.fixup ;
+cpu.x86.assembler cpu.x86.assembler.private cpu.x86.assembler.operands
+cpu.architecture kernel kernel.private math memory namespaces make
+sequences words system layouts combinators math.order fry locals
+compiler.constants
+compiler.cfg.registers
+compiler.cfg.instructions
+compiler.cfg.intrinsics
+compiler.cfg.comparisons
+compiler.cfg.stack-frame
+compiler.codegen
+compiler.codegen.fixup ;
IN: cpu.x86
<< enable-fixnum-log2 >>
: param@ ( n -- op ) reserved-area-size + stack@ ;
-: spill-integer@ ( n -- op ) spill-integer-offset param@ ;
-
-: spill-float@ ( n -- op ) spill-float-offset param@ ;
+: spill@ ( n -- op ) spill-offset param@ ;
: gc-root@ ( n -- op ) gc-root-offset param@ ;
M: x86 stack-frame-size ( stack-frame -- i )
(stack-frame-size) 3 cells reserved-area-size + + align-stack ;
-HOOK: temp-reg-1 cpu ( -- reg )
-HOOK: temp-reg-2 cpu ( -- reg )
+! Must be a volatile register not used for parameter passing, for safe
+! use in calls in and out of C
+HOOK: temp-reg cpu ( -- reg )
+! Fastcall calling convention
HOOK: param-reg-1 cpu ( -- reg )
HOOK: param-reg-2 cpu ( -- reg )
HOOK: pic-tail-reg cpu ( -- reg )
-M: x86 %load-immediate MOV ;
+M: x86 %load-immediate dup 0 = [ drop dup XOR ] [ MOV ] if ;
M: x86 %load-reference swap 0 MOV rc-absolute-cell rel-immediate ;
: align-code ( n -- )
0 <repetition> % ;
-M: x86 %dispatch-label ( label -- )
- 0 cell, rc-absolute-cell label-fixup ;
-
:: (%slot) ( obj slot tag temp -- op )
temp slot obj [+] LEA
temp tag neg [+] ; inline
M: x86 %set-slot ( src obj slot tag temp -- ) (%slot) swap MOV ;
M: x86 %set-slot-imm ( src obj slot tag -- ) (%slot-imm) swap MOV ;
-M: x86 %add [+] LEA ;
-M: x86 %add-imm [+] LEA ;
+M: x86 %add 2over eq? [ nip ADD ] [ [+] LEA ] if ;
+M: x86 %add-imm 2over eq? [ nip ADD ] [ [+] LEA ] if ;
M: x86 %sub nip SUB ;
-M: x86 %sub-imm neg [+] LEA ;
+M: x86 %sub-imm 2over eq? [ nip SUB ] [ neg [+] LEA ] if ;
M: x86 %mul nip swap IMUL2 ;
-M: x86 %mul-imm nip IMUL2 ;
+M: x86 %mul-imm IMUL3 ;
M: x86 %and nip AND ;
M: x86 %and-imm nip AND ;
M: x86 %or nip OR ;
M: x86 %not drop NOT ;
M: x86 %log2 BSR ;
-: ?MOV ( dst src -- )
- 2dup = [ 2drop ] [ MOV ] if ; inline
-
-:: move>args ( src1 src2 -- )
- {
- { [ src1 param-reg-2 = ] [ param-reg-1 src2 ?MOV param-reg-1 param-reg-2 XCHG ] }
- { [ src1 param-reg-1 = ] [ param-reg-2 src2 ?MOV ] }
- { [ src2 param-reg-1 = ] [ param-reg-2 src1 ?MOV param-reg-1 param-reg-2 XCHG ] }
- { [ src2 param-reg-2 = ] [ param-reg-1 src1 ?MOV ] }
- [
- param-reg-1 src1 MOV
- param-reg-2 src2 MOV
- ]
- } cond ;
-
-HOOK: %alien-invoke-tail cpu ( func dll -- )
-
-:: overflow-template ( src1 src2 insn inverse func -- )
- <label> "no-overflow" set
+:: overflow-template ( label dst src1 src2 insn -- )
src1 src2 insn call
- ds-reg [] src1 MOV
- "no-overflow" get JNO
- src1 src2 inverse call
- src1 src2 move>args
- %prepare-alien-invoke
- func f %alien-invoke
- "no-overflow" resolve-label ; inline
+ label JO ; inline
-:: overflow-template-tail ( src1 src2 insn inverse func -- )
- <label> "no-overflow" set
- src1 src2 insn call
- "no-overflow" get JNO
- src1 src2 inverse call
- src1 src2 move>args
- %prepare-alien-invoke
- func f %alien-invoke-tail
- "no-overflow" resolve-label
- ds-reg [] src1 MOV
- 0 RET ; inline
-
-M: x86 %fixnum-add ( src1 src2 -- )
- [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template ;
-
-M: x86 %fixnum-add-tail ( src1 src2 -- )
- [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template-tail ;
-
-M: x86 %fixnum-sub ( src1 src2 -- )
- [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template ;
-
-M: x86 %fixnum-sub-tail ( src1 src2 -- )
- [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template-tail ;
-
-M:: x86 %fixnum-mul ( src1 src2 temp1 temp2 -- )
- "no-overflow" define-label
- temp1 src1 MOV
- temp1 tag-bits get SAR
- src2 temp1 IMUL2
- ds-reg [] temp1 MOV
- "no-overflow" get JNO
- src1 src2 move>args
- param-reg-1 tag-bits get SAR
- param-reg-2 tag-bits get SAR
- %prepare-alien-invoke
- "overflow_fixnum_multiply" f %alien-invoke
- "no-overflow" resolve-label ;
-
-M:: x86 %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
- "overflow" define-label
- temp1 src1 MOV
- temp1 tag-bits get SAR
- src2 temp1 IMUL2
- "overflow" get JO
- ds-reg [] temp1 MOV
- 0 RET
- "overflow" resolve-label
- src1 src2 move>args
- param-reg-1 tag-bits get SAR
- param-reg-2 tag-bits get SAR
- %prepare-alien-invoke
- "overflow_fixnum_multiply" f %alien-invoke-tail ;
+M: x86 %fixnum-add ( label dst src1 src2 -- )
+ [ ADD ] overflow-template ;
+
+M: x86 %fixnum-sub ( label dst src1 src2 -- )
+ [ SUB ] overflow-template ;
+
+M: x86 %fixnum-mul ( label dst src1 src2 -- )
+ [ swap IMUL2 ] overflow-template ;
: bignum@ ( reg n -- op )
cells bignum tag-number - [+] ; inline
dst 3 bignum@ src MOV
! Compute sign
temp src MOV
- temp cell-bits 1- SAR
+ temp cell-bits 1 - SAR
temp 1 AND
! Store sign
dst 2 bignum@ temp MOV
M: x86 %integer>float CVTSI2SD ;
M: x86 %float>integer CVTTSD2SI ;
-M: x86 %copy ( dst src -- ) ?MOV ;
+GENERIC: copy-register* ( dst src rep -- )
+
+M: int-rep copy-register* drop MOV ;
+M: tagged-rep copy-register* drop MOV ;
+M: single-float-rep copy-register* drop MOVSS ;
+M: double-float-rep copy-register* drop MOVSD ;
+
+: copy-register ( dst src rep -- )
+ 2over eq? [ 3drop ] [ copy-register* ] if ;
-M: x86 %copy-float ( dst src -- )
- 2dup = [ 2drop ] [ MOVSD ] if ;
+M: x86 %copy ( dst src rep -- ) copy-register ;
M: x86 %unbox-float ( dst src -- )
float-offset [+] MOVSD ;
"end" resolve-label
] with-scope ;
-: small-reg-4 ( reg -- reg' )
- H{
- { EAX EAX }
- { ECX ECX }
- { EDX EDX }
- { EBX EBX }
- { ESP ESP }
- { EBP EBP }
- { ESI ESP }
- { EDI EDI }
-
- { RAX EAX }
- { RCX ECX }
- { RDX EDX }
- { RBX EBX }
- { RSP ESP }
- { RBP EBP }
- { RSI ESP }
- { RDI EDI }
- } at ; inline
-
-: small-reg-2 ( reg -- reg' )
- small-reg-4 H{
- { EAX AX }
- { ECX CX }
- { EDX DX }
- { EBX BX }
- { ESP SP }
- { EBP BP }
- { ESI SI }
- { EDI DI }
- } at ; inline
-
-: small-reg-1 ( reg -- reg' )
- small-reg-4 {
- { EAX AL }
- { ECX CL }
- { EDX DL }
- { EBX BL }
- } at ; inline
-
-: small-reg ( reg size -- reg' )
+! The 'small-reg' mess is pretty crappy, but its only used on x86-32.
+! On x86-64, all registers have 8-bit versions. However, a similar
+! problem arises for shifts, where the shift count must be in CL, and
+! so one day I will fix this properly by adding precoloring to the
+! register allocator.
+
+HOOK: has-small-reg? cpu ( reg size -- ? )
+
+CONSTANT: have-byte-regs { EAX ECX EDX EBX }
+
+M: x86.32 has-small-reg?
{
- { 1 [ small-reg-1 ] }
- { 2 [ small-reg-2 ] }
- { 4 [ small-reg-4 ] }
+ { 8 [ have-byte-regs memq? ] }
+ { 16 [ drop t ] }
+ { 32 [ drop t ] }
} case ;
-: small-regs ( -- regs ) { EAX ECX EDX EBX } ; inline
+M: x86.64 has-small-reg? 2drop t ;
: small-reg-that-isn't ( exclude -- reg' )
- small-regs swap [ small-reg-4 ] map '[ _ memq? not ] find nip ;
+ [ have-byte-regs ] dip
+ [ native-version-of ] map
+ '[ _ memq? not ] find nip ;
: with-save/restore ( reg quot -- )
[ drop PUSH ] [ call ] [ drop POP ] 2tri ; inline
-:: with-small-register ( dst exclude quot: ( new-dst -- ) -- )
- #! If the destination register overlaps a small register, we
- #! call the quot with that. Otherwise, we find a small
- #! register that is not in exclude, and call quot, saving
- #! and restoring the small register.
- dst small-reg-4 small-regs memq? [ dst quot call ] [
+:: with-small-register ( dst exclude size quot: ( new-dst -- ) -- )
+ ! If the destination register overlaps a small register with
+ ! 'size' bits, we call the quot with that. Otherwise, we find a
+ ! small register that is not in exclude, and call quot, saving and
+ ! restoring the small register.
+ dst size has-small-reg? [ dst quot call ] [
exclude small-reg-that-isn't
[ quot call ] with-save/restore
] if ; inline
+: ?MOV ( dst src -- )
+ 2dup = [ 2drop ] [ MOV ] if ; inline
+
M:: x86 %string-nth ( dst src index temp -- )
+ ! We request a small-reg of size 8 since those of size 16 are
+ ! a superset.
"end" define-label
- dst { src index temp } [| new-dst |
+ dst { src index temp } 8 [| new-dst |
! Load the least significant 7 bits into new-dst.
! 8th bit indicates whether we have to load from
! the aux vector or not.
temp src index [+] LEA
- new-dst 1 small-reg temp string-offset [+] MOV
- new-dst new-dst 1 small-reg MOVZX
+ new-dst 8-bit-version-of temp string-offset [+] MOV
+ new-dst new-dst 8-bit-version-of MOVZX
! Do we have to look at the aux vector?
new-dst HEX: 80 CMP
"end" get JL
new-dst index ADD
new-dst index ADD
! Load high 16 bits
- new-dst 2 small-reg new-dst byte-array-offset [+] MOV
- new-dst new-dst 2 small-reg MOVZX
+ new-dst 16-bit-version-of new-dst byte-array-offset [+] MOV
+ new-dst new-dst 16-bit-version-of MOVZX
new-dst 7 SHL
! Compute code point
new-dst temp XOR
] with-small-register ;
M:: x86 %set-string-nth-fast ( ch str index temp -- )
- ch { index str temp } [| new-ch |
+ ch { index str temp } 8 [| new-ch |
new-ch ch ?MOV
temp str index [+] LEA
- temp string-offset [+] new-ch 1 small-reg MOV
+ temp string-offset [+] new-ch 8-bit-version-of MOV
] with-small-register ;
:: %alien-integer-getter ( dst src size quot -- )
- dst { src } [| new-dst |
- new-dst dup size small-reg dup src [] MOV
+ dst { src } size [| new-dst |
+ new-dst dup size n-bit-version-of dup src [] MOV
quot call
dst new-dst ?MOV
] with-small-register ; inline
: %alien-unsigned-getter ( dst src size -- )
[ MOVZX ] %alien-integer-getter ; inline
-M: x86 %alien-unsigned-1 1 %alien-unsigned-getter ;
-M: x86 %alien-unsigned-2 2 %alien-unsigned-getter ;
+M: x86 %alien-unsigned-1 8 %alien-unsigned-getter ;
+M: x86 %alien-unsigned-2 16 %alien-unsigned-getter ;
+M: x86 %alien-unsigned-4 32 [ 2drop ] %alien-integer-getter ;
: %alien-signed-getter ( dst src size -- )
[ MOVSX ] %alien-integer-getter ; inline
-M: x86 %alien-signed-1 1 %alien-signed-getter ;
-M: x86 %alien-signed-2 2 %alien-signed-getter ;
-M: x86 %alien-signed-4 4 %alien-signed-getter ;
-
-M: x86 %alien-unsigned-4 4 [ 2drop ] %alien-integer-getter ;
+M: x86 %alien-signed-1 8 %alien-signed-getter ;
+M: x86 %alien-signed-2 16 %alien-signed-getter ;
+M: x86 %alien-signed-4 32 %alien-signed-getter ;
M: x86 %alien-cell [] MOV ;
M: x86 %alien-float dupd [] MOVSS dup CVTSS2SD ;
M: x86 %alien-double [] MOVSD ;
:: %alien-integer-setter ( ptr value size -- )
- value { ptr } [| new-value |
+ value { ptr } size [| new-value |
new-value value ?MOV
- ptr [] new-value size small-reg MOV
+ ptr [] new-value size n-bit-version-of MOV
] with-small-register ; inline
-M: x86 %set-alien-integer-1 1 %alien-integer-setter ;
-M: x86 %set-alien-integer-2 2 %alien-integer-setter ;
-M: x86 %set-alien-integer-4 4 %alien-integer-setter ;
+M: x86 %set-alien-integer-1 8 %alien-integer-setter ;
+M: x86 %set-alien-integer-2 16 %alien-integer-setter ;
+M: x86 %set-alien-integer-4 32 %alien-integer-setter ;
M: x86 %set-alien-cell [ [] ] dip MOV ;
M: x86 %set-alien-float dup dup CVTSD2SS [ [] ] dip MOVSS ;
M: x86 %set-alien-double [ [] ] dip MOVSD ;
+: shift-count? ( reg -- ? ) { ECX RCX } memq? ;
+
+:: emit-shift ( dst src1 src2 quot -- )
+ src2 shift-count? [
+ dst CL quot call
+ ] [
+ dst shift-count? [
+ dst src2 XCHG
+ src2 CL quot call
+ dst src2 XCHG
+ ] [
+ ECX native-version-of [
+ CL src2 MOV
+ drop dst CL quot call
+ ] with-save/restore
+ ] if
+ ] if ; inline
+
+M: x86 %shl [ SHL ] emit-shift ;
+M: x86 %shr [ SHR ] emit-shift ;
+M: x86 %sar [ SAR ] emit-shift ;
+
: load-zone-ptr ( reg -- )
#! Load pointer to start of zone array
0 MOV "nursery" f rc-absolute-cell rel-dlsym ;
table table [] MOV
table card# [+] card-mark <byte> MOV ;
-:: check-nursery ( temp1 temp2 -- )
+M:: x86 %check-nursery ( label temp1 temp2 -- )
temp1 load-zone-ptr
temp2 temp1 cell [+] MOV
temp2 1024 ADD
temp1 temp1 3 cells [+] MOV
- temp2 temp1 CMP ;
-
-GENERIC# save-gc-root 1 ( gc-root operand temp -- )
-
-M:: spill-slot save-gc-root ( gc-root spill-slot temp -- )
- temp spill-slot n>> spill-integer@ MOV
- gc-root gc-root@ temp MOV ;
-
-M:: word save-gc-root ( gc-root register temp -- )
- gc-root gc-root@ register MOV ;
-
-: save-gc-roots ( gc-roots temp -- )
- '[ _ save-gc-root ] assoc-each ;
-
-GENERIC# load-gc-root 1 ( gc-root operand temp -- )
+ temp2 temp1 CMP
+ label JLE ;
-M:: spill-slot load-gc-root ( gc-root spill-slot temp -- )
- temp gc-root gc-root@ MOV
- spill-slot n>> spill-integer@ temp MOV ;
+M: x86 %save-gc-root ( gc-root register -- ) [ gc-root@ ] dip MOV ;
-M:: word load-gc-root ( gc-root register temp -- )
- register gc-root gc-root@ MOV ;
+M: x86 %load-gc-root ( gc-root register -- ) swap gc-root@ MOV ;
-: load-gc-roots ( gc-roots temp -- )
- '[ _ load-gc-root ] assoc-each ;
-
-:: call-gc ( gc-root-count -- )
+M:: x86 %call-gc ( gc-root-count -- )
! Pass pointer to start of GC roots as first parameter
param-reg-1 gc-root-base param@ LEA
! Pass number of roots as second parameter
%prepare-alien-invoke
"inline_gc" f %alien-invoke ;
-M:: x86 %gc ( temp1 temp2 gc-roots gc-root-count -- )
- "end" define-label
- temp1 temp2 check-nursery
- "end" get JLE
- gc-roots temp1 save-gc-roots
- gc-root-count call-gc
- gc-roots temp1 load-gc-roots
- "end" resolve-label ;
-
M: x86 %alien-global
[ 0 MOV ] 2dip rc-absolute-cell rel-dlsym ;
{ cc/= [ JNE ] }
} case ;
-M: x86 %spill-integer ( src n -- ) spill-integer@ swap MOV ;
-M: x86 %reload-integer ( dst n -- ) spill-integer@ MOV ;
-
-M: x86 %spill-float ( src n -- ) spill-float@ swap MOVSD ;
-M: x86 %reload-float ( dst n -- ) spill-float@ MOVSD ;
+M: x86 %spill ( src n rep -- ) [ spill@ swap ] dip copy-register ;
+M: x86 %reload ( dst n rep -- ) [ spill@ ] dip copy-register ;
M: x86 %loop-entry 16 code-alignment [ NOP ] times ;
-M: int-regs %save-param-reg drop [ param@ ] dip MOV ;
-M: int-regs %load-param-reg drop swap param@ MOV ;
-
-GENERIC: MOVSS/D ( dst src reg-class -- )
-
-M: single-float-regs MOVSS/D drop MOVSS ;
-M: double-float-regs MOVSS/D drop MOVSD ;
-
-M: float-regs %save-param-reg [ param@ ] 2dip MOVSS/D ;
-M: float-regs %load-param-reg [ swap param@ ] dip MOVSS/D ;
-
-GENERIC: push-return-reg ( reg-class -- )
-GENERIC: load-return-reg ( n reg-class -- )
-GENERIC: store-return-reg ( n reg-class -- )
-
M: x86 %prepare-alien-invoke
#! Save Factor stack pointers in case the C code calls a
#! callback which does a GC, which must reliably trace
#! all roots.
- temp-reg-1 "stack_chain" f %alien-global
- temp-reg-1 temp-reg-1 [] MOV
- temp-reg-1 [] stack-reg MOV
- temp-reg-1 [] cell SUB
- temp-reg-1 2 cells [+] ds-reg MOV
- temp-reg-1 3 cells [+] rs-reg MOV ;
+ temp-reg "stack_chain" f %alien-global
+ temp-reg temp-reg [] MOV
+ temp-reg [] stack-reg MOV
+ temp-reg [] cell SUB
+ temp-reg 2 cells [+] ds-reg MOV
+ temp-reg 3 cells [+] rs-reg MOV ;
M: x86 value-struct? drop t ;
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