1 ! Copyright (C) 2007, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: bootstrap.image.private kernel kernel.private namespaces
4 system cpu.x86.assembler cpu.x86.assembler.operands layouts
5 vocabs parser compiler.constants sequences math math.private
6 generic.single.private ;
11 : stack-frame-size ( -- n ) 8 bootstrap-cells ;
12 : shift-arg ( -- reg ) ECX ;
13 : div-arg ( -- reg ) EAX ;
14 : mod-arg ( -- reg ) EDX ;
15 : temp0 ( -- reg ) EAX ;
16 : temp1 ( -- reg ) EDX ;
17 : temp2 ( -- reg ) ECX ;
18 : temp3 ( -- reg ) EBX ;
19 : safe-reg ( -- reg ) EAX ;
20 : stack-reg ( -- reg ) ESP ;
21 : frame-reg ( -- reg ) EBP ;
22 : vm-reg ( -- reg ) ECX ;
23 : ctx-reg ( -- reg ) EBP ;
24 : nv-regs ( -- seq ) { ESI EDI EBX } ;
25 : ds-reg ( -- reg ) ESI ;
26 : rs-reg ( -- reg ) EDI ;
27 : fixnum>slot@ ( -- ) temp0 2 SAR ;
28 : rex-length ( -- n ) 0 ;
31 ! save stack frame size
34 0 PUSH rc-absolute-cell rt-this jit-rel
36 ESP stack-frame-size 3 bootstrap-cells - SUB
37 ] jit-prolog jit-define
40 temp3 0 MOV rc-absolute-cell rt-here jit-rel
41 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
42 ] jit-word-jump jit-define
45 vm-reg 0 MOV 0 rc-absolute-cell jit-vm ;
47 : jit-load-context ( -- )
48 ! VM pointer must be in vm-reg already
49 ctx-reg vm-reg vm-context-offset [+] MOV ;
51 : jit-save-context ( -- )
53 ctx-reg context-callstack-top-offset [+] EDX MOV
54 ctx-reg context-datastack-offset [+] ds-reg MOV
55 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
57 : jit-restore-context ( -- )
58 ds-reg ctx-reg context-datastack-offset [+] MOV
59 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
67 0 CALL rc-relative rt-dlsym jit-rel
68 ! restore ds, rs registers
70 ] jit-primitive jit-define
75 ! save ctx->callstack_bottom, load ds, rs registers
79 EDX stack-reg stack-frame-size 4 - [+] LEA
80 ctx-reg context-callstack-bottom-offset [+] EDX MOV
82 EAX quot-entry-point-offset [+] CALL
83 ! save ds, rs registers
85 ] \ c-to-factor define-sub-primitive
89 ds-reg bootstrap-cell SUB
91 [ EAX quot-entry-point-offset [+] CALL ]
92 [ EAX quot-entry-point-offset [+] JMP ]
93 \ (call) define-combinator-primitive
96 ! Clear x87 stack, but preserve rounding mode and exception flags
104 EAX ESP stack-frame-size [+] MOV
105 EDX ESP stack-frame-size 4 + [+] MOV
107 ! Unwind stack frames
110 ! Load ds and rs registers
116 EAX quot-entry-point-offset [+] JMP
117 ] \ unwind-native-frames define-sub-primitive
120 ! Load callstack object
122 ds-reg bootstrap-cell SUB
123 ! Get ctx->callstack_bottom
126 EAX ctx-reg context-callstack-bottom-offset [+] MOV
127 ! Get top of callstack object -- 'src' for memcpy
128 EBP EBX callstack-top-offset [+] LEA
129 ! Get callstack length, in bytes --- 'len' for memcpy
130 EDX EBX callstack-length-offset [+] MOV
132 ! Compute new stack pointer -- 'dst' for memcpy
134 ! Install new stack pointer
140 0 CALL "factor_memcpy" f rc-relative jit-dlsym
142 ! Return with new callstack
144 ] \ set-callstack define-sub-primitive
156 0 CALL "lazy_jit_compile" f rc-relative jit-dlsym
158 [ EAX quot-entry-point-offset [+] CALL ]
159 [ EAX quot-entry-point-offset [+] JMP ]
160 \ lazy-jit-compile define-combinator-primitive
162 ! Inline cache miss entry points
163 : jit-load-return-address ( -- )
164 EBX ESP stack-frame-size bootstrap-cell - [+] MOV ;
166 ! These are always in tail position with an existing stack
167 ! frame, and the stack. The frame setup takes this into account.
168 : jit-inline-cache-miss ( -- )
174 0 CALL "inline_cache_miss" f rc-relative jit-dlsym
175 jit-restore-context ;
177 [ jit-load-return-address jit-inline-cache-miss ]
180 \ inline-cache-miss define-combinator-primitive
182 [ jit-inline-cache-miss ]
185 \ inline-cache-miss-tail define-combinator-primitive
187 ! Overflowing fixnum arithmetic
188 : jit-overflow ( insn func -- )
196 [ [ EBX EDX ] dip call( dst src -- ) ] dip
203 [ 0 CALL ] dip f rc-relative jit-dlsym
207 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
209 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
228 0 CALL "overflow_fixnum_multiply" f rc-relative jit-dlsym
231 ] \ fixnum* define-sub-primitive
233 << "vocab:cpu/x86/bootstrap.factor" parse-file suffix! >>