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 ! Windows-specific setup
150 ctx-reg jit-update-seh
153 EAX ESP stack-frame-size [+] MOV
154 EDX ESP stack-frame-size 4 + [+] MOV
156 ! Unwind stack frames
160 ] \ unwind-native-frames define-sub-primitive
168 ] \ fpu-state define-sub-primitive
171 ESP stack-frame-size [+] FLDCW
172 ] \ set-fpu-state define-sub-primitive
175 ! Load callstack object
177 ds-reg bootstrap-cell SUB
178 ! Get ctx->callstack_bottom
181 temp0 ctx-reg context-callstack-bottom-offset [+] MOV
182 ! Get top of callstack object -- 'src' for memcpy
183 temp1 temp3 callstack-top-offset [+] LEA
184 ! Get callstack length, in bytes --- 'len' for memcpy
185 temp2 temp3 callstack-length-offset [+] MOV
186 temp2 tag-bits get SHR
187 ! Compute new stack pointer -- 'dst' for memcpy
189 ! Install new stack pointer
195 "factor_memcpy" jit-call
197 ! Return with new callstack
199 ] \ set-callstack define-sub-primitive
210 "lazy_jit_compile" jit-call
214 \ lazy-jit-compile define-combinator-primitive
217 temp1 HEX: ffffffff CMP f rc-absolute-cell rel-literal
218 ] pic-check-tuple jit-define
220 ! Inline cache miss entry points
221 : jit-load-return-address ( -- )
222 pic-tail-reg ESP stack-frame-size bootstrap-cell - [+] MOV ;
224 ! These are always in tail position with an existing stack
225 ! frame, and the stack. The frame setup takes this into account.
226 : jit-inline-cache-miss ( -- )
230 ESP [] pic-tail-reg MOV
231 0 CALL rc-relative rel-inline-cache-miss
232 jit-restore-context ;
234 [ jit-load-return-address jit-inline-cache-miss ]
237 \ inline-cache-miss define-combinator-primitive
239 [ jit-inline-cache-miss ]
242 \ inline-cache-miss-tail define-combinator-primitive
244 ! Overflowing fixnum arithmetic
245 : jit-overflow ( insn func -- )
252 [ [ EBX EDX ] dip call( dst src -- ) ] dip
264 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
266 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
285 "overflow_fixnum_multiply" jit-call
288 ] \ fixnum* define-sub-primitive
291 : jit-switch-context ( reg -- )
292 ! Reset return value since its bogus right now, to avoid
296 ! Make the new context the current one
298 vm-reg vm-context-offset [+] ctx-reg MOV
300 ! Load new stack pointer
301 ESP ctx-reg context-callstack-top-offset [+] MOV
303 ! Windows-specific setup
304 ctx-reg jit-update-tib
306 ! Load new ds, rs registers
307 jit-restore-context ;
309 : jit-set-context ( -- )
310 ! Load context and parameter from datastack
312 EAX EAX alien-offset [+] MOV
313 EDX ds-reg -4 [+] MOV
316 ! Save ds, rs registers
320 ! Make the new context active
321 EAX jit-switch-context
323 ! Windows-specific setup
324 ctx-reg jit-update-seh
326 ! Twiddle stack for return
329 ! Store parameter to datastack
333 [ jit-set-context ] \ (set-context) define-sub-primitive
335 : jit-save-quot-and-param ( -- )
339 : jit-push-param ( -- )
344 : jit-start-context ( -- )
345 ! Create the new context in return-reg
349 "new_context" jit-call
351 jit-save-quot-and-param
353 ! Make the new context active
356 EAX jit-switch-context
360 ! Windows-specific setup
363 ! Push a fake return address
366 ! Jump to initial quotation
370 [ jit-start-context ] \ (start-context) define-sub-primitive
372 : jit-delete-current-context ( -- )
376 ESP 4 [+] ctx-reg MOV
377 "delete_context" jit-call ;
380 jit-delete-current-context
382 ] \ (set-context-and-delete) define-sub-primitive
384 : jit-start-context-and-delete ( -- )
388 ESP 4 [+] ctx-reg MOV
389 "reset_context" jit-call
391 jit-save-quot-and-param
392 ctx-reg jit-switch-context
399 0 EAX MOVABS rc-absolute rel-safepoint
400 ] \ jit-safepoint jit-define
403 jit-start-context-and-delete
404 ] \ (start-context-and-delete) define-sub-primitive