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 ;
33 : red-zone-size ( -- n ) 0 ;
35 : jit-call ( name -- )
36 0 CALL f rc-relative rel-dlsym ;
40 ESP stack-frame-size bootstrap-cell - SUB
42 ESP stack-frame-size 3 bootstrap-cells - [+] 0 MOV rc-absolute-cell rel-this
43 ! store stack frame size
44 ESP stack-frame-size 2 bootstrap-cells - [+] stack-frame-size MOV
45 ] jit-prolog jit-define
48 pic-tail-reg 0 MOV 0 rc-absolute-cell rel-here
49 0 JMP f rc-relative rel-word-pic-tail
50 ] jit-word-jump jit-define
53 vm-reg 0 MOV 0 rc-absolute-cell rel-vm ;
55 : jit-load-context ( -- )
56 ! VM pointer must be in vm-reg already
57 ctx-reg vm-reg vm-context-offset [+] MOV ;
59 : jit-save-context ( -- )
62 ctx-reg context-callstack-top-offset [+] ECX MOV
63 ctx-reg context-datastack-offset [+] ds-reg MOV
64 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
66 : jit-restore-context ( -- )
67 ds-reg ctx-reg context-datastack-offset [+] MOV
68 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
71 ! ctx-reg is preserved across the call because it is
72 ! non-volatile in the C ABI
77 0 CALL f f rc-relative rel-dlsym
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
101 ! The signal-handler and leaf-signal-handler subprimitives are special-cased
102 ! in vm/quotations.cpp not to trigger generation of a stack frame, so they can
103 ! peform their own prolog/epilog preserving registers.
105 :: jit-signal-handler-prolog ( -- frame-size )
106 stack-frame-size 8 bootstrap-cells + :> frame-size
107 ESP frame-size bootstrap-cell - SUB ! minus a cell for return address
109 ESP 1 bootstrap-cells [+] ECX MOV
110 ESP 2 bootstrap-cells [+] EDX MOV
111 ESP 3 bootstrap-cells [+] EBX MOV
112 ESP 4 bootstrap-cells [+] EBP MOV
113 ESP 5 bootstrap-cells [+] ESI MOV
114 ESP 6 bootstrap-cells [+] EDI MOV
115 ESP frame-size 3 bootstrap-cells - [+] 0 MOV rc-absolute-cell rel-this
116 ESP frame-size 2 bootstrap-cells - [+] frame-size MOV
117 ! subprimitive definition assumes vm's been loaded
121 :: jit-signal-handler-epilog ( frame-size -- )
123 ECX ESP 1 bootstrap-cells [+] MOV
124 EDX ESP 2 bootstrap-cells [+] MOV
125 EBX ESP 3 bootstrap-cells [+] MOV
126 EBP ESP 4 bootstrap-cells [+] MOV
127 ESI ESP 5 bootstrap-cells [+] MOV
128 EDI ESP 6 bootstrap-cells [+] MOV
129 ESP frame-size bootstrap-cell - ADD ;
133 ds-reg bootstrap-cell SUB
137 \ (call) define-combinator-primitive
140 ! Load ds and rs registers
145 ! Windows-specific setup
146 ctx-reg jit-update-seh
149 EAX ESP stack-frame-size [+] MOV
150 EDX ESP stack-frame-size 4 + [+] MOV
152 ! Unwind stack frames
156 ] \ unwind-native-frames define-sub-primitive
164 ] \ fpu-state define-sub-primitive
167 ESP stack-frame-size [+] FLDCW
168 ] \ set-fpu-state define-sub-primitive
171 ! Load callstack object
173 ds-reg bootstrap-cell SUB
174 ! Get ctx->callstack_bottom
177 temp0 ctx-reg context-callstack-bottom-offset [+] MOV
178 ! Get top of callstack object -- 'src' for memcpy
179 temp1 temp3 callstack-top-offset [+] LEA
180 ! Get callstack length, in bytes --- 'len' for memcpy
181 temp2 temp3 callstack-length-offset [+] MOV
182 temp2 tag-bits get SHR
183 ! Compute new stack pointer -- 'dst' for memcpy
185 ! Install new stack pointer
191 "factor_memcpy" jit-call
193 ! Return with new callstack
195 ] \ set-callstack define-sub-primitive
206 "lazy_jit_compile" jit-call
210 \ lazy-jit-compile define-combinator-primitive
213 temp1 HEX: ffffffff CMP f rc-absolute-cell rel-literal
214 ] pic-check-tuple jit-define
216 ! Inline cache miss entry points
217 : jit-load-return-address ( -- )
218 pic-tail-reg ESP stack-frame-size bootstrap-cell - [+] MOV ;
220 ! These are always in tail position with an existing stack
221 ! frame, and the stack. The frame setup takes this into account.
222 : jit-inline-cache-miss ( -- )
226 ESP [] pic-tail-reg MOV
227 0 CALL rc-relative rel-inline-cache-miss
228 jit-restore-context ;
230 [ jit-load-return-address jit-inline-cache-miss ]
233 \ inline-cache-miss define-combinator-primitive
235 [ jit-inline-cache-miss ]
238 \ inline-cache-miss-tail define-combinator-primitive
240 ! Overflowing fixnum arithmetic
241 : jit-overflow ( insn func -- )
248 [ [ EBX EDX ] dip call( dst src -- ) ] dip
260 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
262 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
281 "overflow_fixnum_multiply" jit-call
284 ] \ fixnum* define-sub-primitive
287 : jit-switch-context ( reg -- )
288 ! Reset return value since its bogus right now, to avoid
292 ! Make the new context the current one
294 vm-reg vm-context-offset [+] ctx-reg MOV
296 ! Load new stack pointer
297 ESP ctx-reg context-callstack-top-offset [+] MOV
299 ! Windows-specific setup
300 ctx-reg jit-update-tib
302 ! Load new ds, rs registers
303 jit-restore-context ;
305 : jit-set-context ( -- )
306 ! Load context and parameter from datastack
308 EAX EAX alien-offset [+] MOV
309 EDX ds-reg -4 [+] MOV
312 ! Save ds, rs registers
316 ! Make the new context active
317 EAX jit-switch-context
319 ! Windows-specific setup
320 ctx-reg jit-update-seh
322 ! Twiddle stack for return
325 ! Store parameter to datastack
329 [ jit-set-context ] \ (set-context) define-sub-primitive
331 : jit-save-quot-and-param ( -- )
335 : jit-push-param ( -- )
340 : jit-start-context ( -- )
341 ! Create the new context in return-reg
345 "new_context" jit-call
347 jit-save-quot-and-param
349 ! Make the new context active
352 EAX jit-switch-context
356 ! Windows-specific setup
359 ! Push a fake return address
362 ! Jump to initial quotation
366 [ jit-start-context ] \ (start-context) define-sub-primitive
368 : jit-delete-current-context ( -- )
372 ESP 4 [+] ctx-reg MOV
373 "delete_context" jit-call ;
376 jit-delete-current-context
378 ] \ (set-context-and-delete) define-sub-primitive
380 : jit-start-context-and-delete ( -- )
384 ESP 4 [+] ctx-reg MOV
385 "reset_context" jit-call
387 jit-save-quot-and-param
388 ctx-reg jit-switch-context
395 0 EAX MOVABS rc-absolute rel-safepoint ;
396 ] \ jit-safepoint jit-define
399 jit-start-context-and-delete
400 ] \ (start-context-and-delete) define-sub-primitive