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 threads.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 : stack-reg ( -- reg ) ESP ;
20 : frame-reg ( -- reg ) EBP ;
21 : vm-reg ( -- reg ) ECX ;
22 : ctx-reg ( -- reg ) EBP ;
23 : nv-regs ( -- seq ) { ESI EDI EBX } ;
24 : nv-reg ( -- reg ) EBX ;
25 : ds-reg ( -- reg ) ESI ;
26 : rs-reg ( -- reg ) EDI ;
27 : fixnum>slot@ ( -- ) temp0 2 SAR ;
28 : rex-length ( -- n ) 0 ;
30 : jit-call ( name -- )
31 0 CALL rc-relative jit-dlsym ;
34 ! save stack frame size
37 0 PUSH rc-absolute-cell rt-this jit-rel
39 ESP stack-frame-size 3 bootstrap-cells - SUB
40 ] jit-prolog jit-define
43 temp3 0 MOV rc-absolute-cell rt-here jit-rel
44 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
45 ] jit-word-jump jit-define
48 vm-reg 0 MOV 0 rc-absolute-cell jit-vm ;
50 : jit-load-context ( -- )
51 ! VM pointer must be in vm-reg already
52 ctx-reg vm-reg vm-context-offset [+] MOV ;
54 : jit-save-context ( -- )
57 ctx-reg context-callstack-top-offset [+] EDX MOV
58 ctx-reg context-datastack-offset [+] ds-reg MOV
59 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
61 : jit-restore-context ( -- )
62 ds-reg ctx-reg context-datastack-offset [+] MOV
63 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
66 ! ctx-reg is preserved across the call because it is non-volatile
72 0 CALL rc-relative rt-dlsym jit-rel
74 ] jit-primitive jit-define
76 : jit-jump-quot ( -- )
77 EAX quot-entry-point-offset [+] JMP ;
79 : jit-call-quot ( -- )
80 EAX quot-entry-point-offset [+] CALL ;
87 "begin_callback" jit-call
99 "end_callback" jit-call
100 ] \ c-to-factor define-sub-primitive
104 ds-reg bootstrap-cell SUB
108 \ (call) define-combinator-primitive
111 ! Load ds and rs registers
116 ! Windows-specific setup
117 ctx-reg jit-update-seh
119 ! Clear x87 stack, but preserve rounding mode and exception flags
127 EAX ESP stack-frame-size [+] MOV
128 EDX ESP stack-frame-size 4 + [+] MOV
130 ! Unwind stack frames
134 ] \ unwind-native-frames define-sub-primitive
137 ! Load callstack object
139 ds-reg bootstrap-cell SUB
140 ! Get ctx->callstack_bottom
143 EAX ctx-reg context-callstack-bottom-offset [+] MOV
144 ! Get top of callstack object -- 'src' for memcpy
145 EBP EBX callstack-top-offset [+] LEA
146 ! Get callstack length, in bytes --- 'len' for memcpy
147 EDX EBX callstack-length-offset [+] MOV
149 ! Compute new stack pointer -- 'dst' for memcpy
151 ! Install new stack pointer
157 "factor_memcpy" jit-call
159 ! Return with new callstack
161 ] \ set-callstack define-sub-primitive
172 "lazy_jit_compile" jit-call
176 \ lazy-jit-compile define-combinator-primitive
178 ! Inline cache miss entry points
179 : jit-load-return-address ( -- )
180 EBX ESP stack-frame-size bootstrap-cell - [+] MOV ;
182 ! These are always in tail position with an existing stack
183 ! frame, and the stack. The frame setup takes this into account.
184 : jit-inline-cache-miss ( -- )
189 "inline_cache_miss" jit-call
190 jit-restore-context ;
192 [ jit-load-return-address jit-inline-cache-miss ]
195 \ inline-cache-miss define-combinator-primitive
197 [ jit-inline-cache-miss ]
200 \ inline-cache-miss-tail define-combinator-primitive
202 ! Overflowing fixnum arithmetic
203 : jit-overflow ( insn func -- )
210 [ [ EBX EDX ] dip call( dst src -- ) ] dip
221 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
223 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
241 "overflow_fixnum_multiply" jit-call
244 ] \ fixnum* define-sub-primitive
247 : jit-switch-context ( reg -- )
248 ! Save ds, rs registers
252 ! Make the new context the current one
254 vm-reg vm-context-offset [+] ctx-reg MOV
256 ! Load new stack pointer
257 ESP ctx-reg context-callstack-top-offset [+] MOV
259 ! Windows-specific setup
260 ctx-reg jit-update-tib
262 ! Load new ds, rs registers
263 jit-restore-context ;
265 : jit-set-context ( -- )
266 ! Load context and parameter from datastack
268 EAX EAX alien-offset [+] MOV
269 EBX ds-reg -4 [+] MOV
272 ! Make the new context active
273 EAX jit-switch-context
275 ! Windows-specific setup
276 ctx-reg jit-update-seh
278 ! Twiddle stack for return
281 ! Store parameter to datastack
285 [ jit-set-context ] \ (set-context) define-sub-primitive
287 : jit-start-context ( -- )
288 ! Create the new context in return-reg
291 "new_context" jit-call
293 ! Save pointer to quotation and parameter
297 ! Make the new context active
298 EAX jit-switch-context
305 ! Windows-specific setup
308 ! Push a fake return address
311 ! Jump to initial quotation
315 [ jit-start-context ] \ (start-context) define-sub-primitive
317 : jit-delete-current-context ( -- )
321 ESP 4 [+] ctx-reg MOV
322 "delete_context" jit-call ;
325 jit-delete-current-context
327 ] \ (set-context-and-delete) define-sub-primitive
330 jit-delete-current-context
332 ] \ (start-context-and-delete) define-sub-primitive