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 ) ECX ;
17 : temp2 ( -- reg ) EBX ;
18 : temp3 ( -- reg ) EDX ;
19 : pic-tail-reg ( -- reg ) EDX ;
20 : stack-reg ( -- reg ) ESP ;
21 : frame-reg ( -- reg ) EBP ;
22 : vm-reg ( -- reg ) EBX ;
23 : ctx-reg ( -- reg ) EBP ;
24 : nv-regs ( -- seq ) { ESI EDI EBX } ;
25 : nv-reg ( -- reg ) ESI ;
26 : ds-reg ( -- reg ) ESI ;
27 : rs-reg ( -- reg ) EDI ;
28 : link-reg ( -- reg ) EBX ;
29 : fixnum>slot@ ( -- ) temp0 2 SAR ;
30 : rex-length ( -- n ) 0 ;
32 : jit-call ( name -- )
33 0 CALL rc-relative jit-dlsym ;
36 ! save stack frame size
39 0 PUSH rc-absolute-cell rt-this jit-rel
41 ESP stack-frame-size 3 bootstrap-cells - SUB
42 ] jit-prolog jit-define
45 pic-tail-reg 0 MOV rc-absolute-cell rt-here jit-rel
46 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
47 ] jit-word-jump jit-define
50 vm-reg 0 MOV 0 rc-absolute-cell jit-vm ;
52 : jit-load-context ( -- )
53 ! VM pointer must be in vm-reg already
54 ctx-reg vm-reg vm-context-offset [+] MOV ;
56 : jit-save-context ( -- )
59 ctx-reg context-callstack-top-offset [+] ECX MOV
60 ctx-reg context-datastack-offset [+] ds-reg MOV
61 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
63 : jit-restore-context ( -- )
64 ds-reg ctx-reg context-datastack-offset [+] MOV
65 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
67 : jit-scrub-return ( n -- )
71 ! ctx-reg is preserved across the call because it is non-volatile
77 0 CALL rc-relative rt-dlsym jit-rel
79 ] jit-primitive jit-define
81 : jit-jump-quot ( -- )
82 EAX quot-entry-point-offset [+] JMP ;
84 : jit-call-quot ( -- )
85 EAX quot-entry-point-offset [+] CALL ;
92 "begin_callback" jit-call
98 "end_callback" jit-call
99 ] \ c-to-factor define-sub-primitive
103 ds-reg bootstrap-cell SUB
107 \ (call) define-combinator-primitive
110 ! Load ds and rs registers
115 ! Windows-specific setup
116 ctx-reg jit-update-seh
118 ! Clear x87 stack, but preserve rounding mode and exception flags
126 EAX ESP stack-frame-size [+] MOV
127 EDX ESP stack-frame-size 4 + [+] MOV
129 ! 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 temp0 ctx-reg context-callstack-bottom-offset [+] MOV
144 ! Get top of callstack object -- 'src' for memcpy
145 temp1 temp3 callstack-top-offset [+] LEA
146 ! Get callstack length, in bytes --- 'len' for memcpy
147 temp2 temp3 callstack-length-offset [+] MOV
148 temp2 tag-bits get SHR
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
179 temp1 HEX: ffffffff CMP rc-absolute-cell rt-literal jit-rel
180 ] pic-check-tuple jit-define
182 ! Inline cache miss entry points
183 : jit-load-return-address ( -- )
184 pic-tail-reg ESP stack-frame-size bootstrap-cell - [+] MOV ;
186 ! These are always in tail position with an existing stack
187 ! frame, and the stack. The frame setup takes this into account.
188 : jit-inline-cache-miss ( -- )
192 ESP [] pic-tail-reg MOV
193 "inline_cache_miss" jit-call
194 jit-restore-context ;
196 [ jit-load-return-address jit-inline-cache-miss ]
199 \ inline-cache-miss define-combinator-primitive
201 [ jit-inline-cache-miss ]
204 \ inline-cache-miss-tail define-combinator-primitive
206 ! Overflowing fixnum arithmetic
207 : jit-overflow ( insn func -- )
214 [ [ EBX EDX ] dip call( dst src -- ) ] dip
226 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
228 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
247 "overflow_fixnum_multiply" jit-call
250 ] \ fixnum* define-sub-primitive
253 : jit-switch-context ( reg -- )
256 ! Save ds, rs registers
260 ! Make the new context the current one
262 vm-reg vm-context-offset [+] ctx-reg MOV
264 ! Load new stack pointer
265 ESP ctx-reg context-callstack-top-offset [+] MOV
267 ! Windows-specific setup
268 ctx-reg jit-update-tib
270 ! Load new ds, rs registers
271 jit-restore-context ;
273 : jit-set-context ( -- )
274 ! Load context and parameter from datastack
276 EAX EAX alien-offset [+] MOV
277 EDX ds-reg -4 [+] MOV
280 ! Make the new context active
281 EAX jit-switch-context
283 ! Windows-specific setup
284 ctx-reg jit-update-seh
286 ! Twiddle stack for return
289 ! Store parameter to datastack
293 [ jit-set-context ] \ (set-context) define-sub-primitive
295 : jit-save-quot-and-param ( -- )
299 : jit-push-param ( -- )
304 : jit-start-context ( -- )
305 ! Create the new context in return-reg
309 "new_context" jit-call
311 jit-save-quot-and-param
313 ! Make the new context active
314 EAX jit-switch-context
318 ! Windows-specific setup
321 ! Push a fake return address
324 ! Jump to initial quotation
328 [ jit-start-context ] \ (start-context) define-sub-primitive
330 : jit-delete-current-context ( -- )
334 ESP 4 [+] ctx-reg MOV
335 "delete_context" jit-call ;
338 jit-delete-current-context
340 ] \ (set-context-and-delete) define-sub-primitive
342 : jit-start-context-and-delete ( -- )
346 ESP 4 [+] ctx-reg MOV
347 "reset_context" jit-call
349 jit-save-quot-and-param
350 ctx-reg jit-switch-context
357 jit-start-context-and-delete
358 ] \ (start-context-and-delete) define-sub-primitive