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 ! minus a cell each for flags and return address
108 ! use LEA so we don't dirty flags
109 ESP ESP frame-size 2 bootstrap-cells - neg [+] LEA
111 ESP 1 bootstrap-cells [+] ECX MOV
112 ESP 2 bootstrap-cells [+] EDX MOV
113 ESP 3 bootstrap-cells [+] EBX MOV
114 ESP 4 bootstrap-cells [+] EBP MOV
115 ESP 5 bootstrap-cells [+] ESI MOV
116 ESP 6 bootstrap-cells [+] EDI MOV
118 ESP frame-size 3 bootstrap-cells - [+] 0 MOV rc-absolute-cell rel-this
119 ESP frame-size 2 bootstrap-cells - [+] frame-size MOV
120 ! subprimitive definition assumes vm's been loaded
124 :: jit-signal-handler-epilog ( frame-size -- )
127 ECX ESP 1 bootstrap-cells [+] MOV
128 EDX ESP 2 bootstrap-cells [+] MOV
129 EBX ESP 3 bootstrap-cells [+] MOV
130 EBP ESP 4 bootstrap-cells [+] MOV
131 ESI ESP 5 bootstrap-cells [+] MOV
132 EDI ESP 6 bootstrap-cells [+] MOV
133 ESP ESP frame-size 2 bootstrap-cells - [+] LEA ;
137 ds-reg bootstrap-cell SUB
141 \ (call) define-combinator-primitive
144 ! Load ds and rs registers
149 ! clear the fault flag
150 vm-reg vm-fault-flag-offset [+] 0 MOV
152 ! Windows-specific setup
153 ctx-reg jit-update-seh
156 EAX ESP stack-frame-size [+] MOV
157 EDX ESP stack-frame-size 4 + [+] MOV
159 ! Unwind stack frames
163 ] \ unwind-native-frames define-sub-primitive
171 ] \ fpu-state define-sub-primitive
174 ESP stack-frame-size [+] FLDCW
175 ] \ set-fpu-state define-sub-primitive
178 ! Load callstack object
180 ds-reg bootstrap-cell SUB
181 ! Get ctx->callstack_bottom
184 temp0 ctx-reg context-callstack-bottom-offset [+] MOV
185 ! Get top of callstack object -- 'src' for memcpy
186 temp1 temp3 callstack-top-offset [+] LEA
187 ! Get callstack length, in bytes --- 'len' for memcpy
188 temp2 temp3 callstack-length-offset [+] MOV
189 temp2 tag-bits get SHR
190 ! Compute new stack pointer -- 'dst' for memcpy
192 ! Install new stack pointer
198 "factor_memcpy" jit-call
200 ! Return with new callstack
202 ] \ set-callstack define-sub-primitive
213 "lazy_jit_compile" jit-call
217 \ lazy-jit-compile define-combinator-primitive
220 temp1 0xffffffff CMP f rc-absolute-cell rel-literal
221 ] pic-check-tuple jit-define
223 ! Inline cache miss entry points
224 : jit-load-return-address ( -- )
225 pic-tail-reg ESP stack-frame-size bootstrap-cell - [+] MOV ;
227 ! These are always in tail position with an existing stack
228 ! frame, and the stack. The frame setup takes this into account.
229 : jit-inline-cache-miss ( -- )
233 ESP [] pic-tail-reg MOV
234 0 CALL rc-relative rel-inline-cache-miss
235 jit-restore-context ;
237 [ jit-load-return-address jit-inline-cache-miss ]
240 \ inline-cache-miss define-combinator-primitive
242 [ jit-inline-cache-miss ]
245 \ inline-cache-miss-tail define-combinator-primitive
247 ! Overflowing fixnum arithmetic
248 : jit-overflow ( insn func -- )
255 [ [ EBX EDX ] dip call( dst src -- ) ] dip
267 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
269 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
288 "overflow_fixnum_multiply" jit-call
291 ] \ fixnum* define-sub-primitive
294 : jit-switch-context ( reg -- )
295 ! Reset return value since its bogus right now, to avoid
299 ! Make the new context the current one
301 vm-reg vm-context-offset [+] ctx-reg MOV
303 ! Load new stack pointer
304 ESP ctx-reg context-callstack-top-offset [+] MOV
306 ! Windows-specific setup
307 ctx-reg jit-update-tib
309 ! Load new ds, rs registers
310 jit-restore-context ;
312 : jit-set-context ( -- )
313 ! Load context and parameter from datastack
315 EAX EAX alien-offset [+] MOV
316 EDX ds-reg -4 [+] MOV
319 ! Save ds, rs registers
323 ! Make the new context active
324 EAX jit-switch-context
326 ! Windows-specific setup
327 ctx-reg jit-update-seh
329 ! Twiddle stack for return
332 ! Store parameter to datastack
336 [ jit-set-context ] \ (set-context) define-sub-primitive
338 : jit-save-quot-and-param ( -- )
342 : jit-push-param ( -- )
347 : jit-start-context ( -- )
348 ! Create the new context in return-reg
352 "new_context" jit-call
354 jit-save-quot-and-param
356 ! Make the new context active
359 EAX jit-switch-context
363 ! Windows-specific setup
366 ! Push a fake return address
369 ! Jump to initial quotation
373 [ jit-start-context ] \ (start-context) define-sub-primitive
375 : jit-delete-current-context ( -- )
379 ESP 4 [+] ctx-reg MOV
380 "delete_context" jit-call ;
383 jit-delete-current-context
385 ] \ (set-context-and-delete) define-sub-primitive
387 : jit-start-context-and-delete ( -- )
391 ESP 4 [+] ctx-reg MOV
392 "reset_context" jit-call
394 jit-save-quot-and-param
395 ctx-reg jit-switch-context
402 0 EAX MOVABS rc-absolute rel-safepoint
403 ] \ jit-safepoint jit-define
406 jit-start-context-and-delete
407 ] \ (start-context-and-delete) define-sub-primitive