1 ! Copyright (C) 2007, 2011 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 compiler.codegen.relocation
6 sequences math math.private generic.single.private
7 threads.private locals ;
12 : stack-frame-size ( -- n ) 8 bootstrap-cells ;
13 : shift-arg ( -- reg ) ECX ;
14 : div-arg ( -- reg ) EAX ;
15 : mod-arg ( -- reg ) EDX ;
16 : temp0 ( -- reg ) EAX ;
17 : temp1 ( -- reg ) ECX ;
18 : temp2 ( -- reg ) EBX ;
19 : temp3 ( -- reg ) EDX ;
20 : pic-tail-reg ( -- reg ) EDX ;
21 : stack-reg ( -- reg ) ESP ;
22 : frame-reg ( -- reg ) EBP ;
23 : vm-reg ( -- reg ) EBX ;
24 : ctx-reg ( -- reg ) EBP ;
25 : nv-regs ( -- seq ) { ESI EDI EBX } ;
26 : volatile-regs ( -- seq ) { EAX ECX EDX } ;
27 : nv-reg ( -- reg ) ESI ;
28 : ds-reg ( -- reg ) ESI ;
29 : rs-reg ( -- reg ) EDI ;
30 : link-reg ( -- reg ) EBX ;
31 : fixnum>slot@ ( -- ) temp0 2 SAR ;
32 : rex-length ( -- n ) 0 ;
34 : jit-call ( name -- )
35 0 CALL f rc-relative rel-dlsym ;
39 ESP stack-frame-size bootstrap-cell - SUB
41 ESP stack-frame-size 3 bootstrap-cells - [+] 0 MOV rc-absolute-cell rel-this
42 ! store stack frame size
43 ESP stack-frame-size 2 bootstrap-cells - [+] stack-frame-size MOV
44 ] jit-prolog jit-define
47 pic-tail-reg 0 MOV 0 rc-absolute-cell rel-here
48 0 JMP f rc-relative rel-word-pic-tail
49 ] jit-word-jump jit-define
52 vm-reg 0 MOV 0 rc-absolute-cell rel-vm ;
54 : jit-load-context ( -- )
55 ! VM pointer must be in vm-reg already
56 ctx-reg vm-reg vm-context-offset [+] MOV ;
58 : jit-save-context ( -- )
61 ctx-reg context-callstack-top-offset [+] ECX MOV
62 ctx-reg context-datastack-offset [+] ds-reg MOV
63 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
65 : jit-restore-context ( -- )
66 ds-reg ctx-reg context-datastack-offset [+] MOV
67 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
70 ! ctx-reg is preserved across the call because it is
71 ! non-volatile in the C ABI
76 0 CALL f f rc-relative rel-dlsym
78 ] jit-primitive jit-define
80 : jit-jump-quot ( -- )
81 EAX quot-entry-point-offset [+] JMP ;
83 : jit-call-quot ( -- )
84 EAX quot-entry-point-offset [+] CALL ;
91 "begin_callback" jit-call
97 "end_callback" jit-call
98 ] \ c-to-factor define-sub-primitive
100 ! The signal-handler and leaf-signal-handler subprimitives are special-cased
101 ! in vm/quotations.cpp not to trigger generation of a stack frame, so they can
102 ! peform their own prolog/epilog preserving registers.
104 :: jit-signal-handler-prolog ( -- frame-size )
105 stack-frame-size 8 bootstrap-cells + :> frame-size
106 ESP frame-size bootstrap-cell - SUB ! minus a cell for return address
108 ESP 1 bootstrap-cells [+] ECX MOV
109 ESP 2 bootstrap-cells [+] EDX MOV
110 ESP 3 bootstrap-cells [+] EBX MOV
111 ESP 4 bootstrap-cells [+] EBP MOV
112 ESP 5 bootstrap-cells [+] ESI MOV
113 ESP 6 bootstrap-cells [+] EDI MOV
114 ESP frame-size 3 bootstrap-cells - [+] 0 MOV rc-absolute-cell rel-this
115 ESP frame-size 2 bootstrap-cells - [+] frame-size MOV
116 ! subprimitive definition assumes vm's been loaded
120 :: jit-signal-handler-epilog ( frame-size -- )
122 ECX ESP 1 bootstrap-cells [+] MOV
123 EDX ESP 2 bootstrap-cells [+] MOV
124 EBX ESP 3 bootstrap-cells [+] MOV
125 EBP ESP 4 bootstrap-cells [+] MOV
126 ESI ESP 5 bootstrap-cells [+] MOV
127 EDI ESP 6 bootstrap-cells [+] MOV
128 ESP frame-size bootstrap-cell - ADD ;
132 ds-reg bootstrap-cell SUB
136 \ (call) define-combinator-primitive
139 ! Load ds and rs registers
144 ! Windows-specific setup
145 ctx-reg jit-update-seh
148 EAX ESP stack-frame-size [+] MOV
149 EDX ESP stack-frame-size 4 + [+] MOV
151 ! Unwind stack frames
155 ] \ unwind-native-frames define-sub-primitive
163 ] \ fpu-state define-sub-primitive
166 ESP stack-frame-size [+] FLDCW
167 ] \ set-fpu-state define-sub-primitive
170 ! Load callstack object
172 ds-reg bootstrap-cell SUB
173 ! Get ctx->callstack_bottom
176 temp0 ctx-reg context-callstack-bottom-offset [+] MOV
177 ! Get top of callstack object -- 'src' for memcpy
178 temp1 temp3 callstack-top-offset [+] LEA
179 ! Get callstack length, in bytes --- 'len' for memcpy
180 temp2 temp3 callstack-length-offset [+] MOV
181 temp2 tag-bits get SHR
182 ! Compute new stack pointer -- 'dst' for memcpy
184 ! Install new stack pointer
190 "factor_memcpy" jit-call
192 ! Return with new callstack
194 ] \ set-callstack define-sub-primitive
205 "lazy_jit_compile" jit-call
209 \ lazy-jit-compile define-combinator-primitive
212 temp1 HEX: ffffffff CMP f rc-absolute-cell rel-literal
213 ] pic-check-tuple jit-define
215 ! Inline cache miss entry points
216 : jit-load-return-address ( -- )
217 pic-tail-reg ESP stack-frame-size bootstrap-cell - [+] MOV ;
219 ! These are always in tail position with an existing stack
220 ! frame, and the stack. The frame setup takes this into account.
221 : jit-inline-cache-miss ( -- )
225 ESP [] pic-tail-reg MOV
226 0 CALL rc-relative rel-inline-cache-miss
227 jit-restore-context ;
229 [ jit-load-return-address jit-inline-cache-miss ]
232 \ inline-cache-miss define-combinator-primitive
234 [ jit-inline-cache-miss ]
237 \ inline-cache-miss-tail define-combinator-primitive
239 ! Overflowing fixnum arithmetic
240 : jit-overflow ( insn func -- )
247 [ [ EBX EDX ] dip call( dst src -- ) ] dip
259 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
261 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
280 "overflow_fixnum_multiply" jit-call
283 ] \ fixnum* define-sub-primitive
286 : jit-switch-context ( reg -- )
287 ! Reset return value since its bogus right now, to avoid
291 ! Make the new context the current one
293 vm-reg vm-context-offset [+] ctx-reg MOV
295 ! Load new stack pointer
296 ESP ctx-reg context-callstack-top-offset [+] MOV
298 ! Windows-specific setup
299 ctx-reg jit-update-tib
301 ! Load new ds, rs registers
302 jit-restore-context ;
304 : jit-set-context ( -- )
305 ! Load context and parameter from datastack
307 EAX EAX alien-offset [+] MOV
308 EDX ds-reg -4 [+] MOV
311 ! Save ds, rs registers
315 ! Make the new context active
316 EAX jit-switch-context
318 ! Windows-specific setup
319 ctx-reg jit-update-seh
321 ! Twiddle stack for return
324 ! Store parameter to datastack
328 [ jit-set-context ] \ (set-context) define-sub-primitive
330 : jit-save-quot-and-param ( -- )
334 : jit-push-param ( -- )
339 : jit-start-context ( -- )
340 ! Create the new context in return-reg
344 "new_context" jit-call
346 jit-save-quot-and-param
348 ! Make the new context active
351 EAX jit-switch-context
355 ! Windows-specific setup
358 ! Push a fake return address
361 ! Jump to initial quotation
365 [ jit-start-context ] \ (start-context) define-sub-primitive
367 : jit-delete-current-context ( -- )
371 ESP 4 [+] ctx-reg MOV
372 "delete_context" jit-call ;
375 jit-delete-current-context
377 ] \ (set-context-and-delete) define-sub-primitive
379 : jit-start-context-and-delete ( -- )
383 ESP 4 [+] ctx-reg MOV
384 "reset_context" jit-call
386 jit-save-quot-and-param
387 ctx-reg jit-switch-context
393 : jit-safepoint ( -- )
394 0 EAX MOVABS rc-absolute rel-safepoint ;
397 jit-start-context-and-delete
398 ] \ (start-context-and-delete) define-sub-primitive