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 layouts vocabs parser compiler.constants math
5 math.private cpu.x86.assembler cpu.x86.assembler.operands
6 sequences generic.single.private threads.private ;
11 : shift-arg ( -- reg ) RCX ;
12 : div-arg ( -- reg ) RAX ;
13 : mod-arg ( -- reg ) RDX ;
14 : temp0 ( -- reg ) RDI ;
15 : temp1 ( -- reg ) RSI ;
16 : temp2 ( -- reg ) RDX ;
17 : temp3 ( -- reg ) RBX ;
18 : return-reg ( -- reg ) RAX ;
19 : nv-reg ( -- reg ) RBX ;
20 : stack-reg ( -- reg ) RSP ;
21 : frame-reg ( -- reg ) RBP ;
22 : ctx-reg ( -- reg ) R12 ;
23 : vm-reg ( -- reg ) R13 ;
24 : ds-reg ( -- reg ) R14 ;
25 : rs-reg ( -- reg ) R15 ;
26 : fixnum>slot@ ( -- ) temp0 1 SAR ;
27 : rex-length ( -- n ) 1 ;
29 : jit-save-tib ( -- ) ;
30 : jit-restore-tib ( -- ) ;
31 : jit-update-tib ( ctx-reg -- ) drop ;
32 : jit-install-seh ( -- ) ESP bootstrap-cell ADD ;
34 : jit-call ( name -- )
35 RAX 0 MOV rc-absolute-cell jit-dlsym
40 RAX 0 MOV rc-absolute-cell rt-this jit-rel
41 ! save stack frame size
46 RSP stack-frame-size 3 bootstrap-cells - SUB
47 ] jit-prolog jit-define
51 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
52 ] jit-word-jump jit-define
54 : jit-load-context ( -- )
55 ctx-reg vm-reg vm-context-offset [+] MOV ;
57 : jit-save-context ( -- )
60 ctx-reg context-callstack-top-offset [+] R11 MOV
61 ctx-reg context-datastack-offset [+] ds-reg MOV
62 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
64 : jit-restore-context ( -- )
65 ds-reg ctx-reg context-datastack-offset [+] MOV
66 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
69 ! ctx-reg is preserved across the call because it is non-volatile
74 RAX 0 MOV rc-absolute-cell rt-dlsym jit-rel
77 ] jit-primitive jit-define
79 : jit-jump-quot ( -- ) arg1 quot-entry-point-offset [+] JMP ;
81 : jit-call-quot ( -- ) arg1 quot-entry-point-offset [+] CALL ;
86 "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 ! Clear x87 stack, but preserve rounding mode and exception flags
116 ! Unwind stack frames
119 ! Load VM pointer into vm-reg, since we're entering from
121 vm-reg 0 MOV 0 rc-absolute-cell jit-vm
123 ! Load ds and rs registers
129 ] \ unwind-native-frames define-sub-primitive
132 ! Load callstack object
134 ds-reg bootstrap-cell SUB
135 ! Get ctx->callstack_bottom
137 arg1 ctx-reg context-callstack-bottom-offset [+] MOV
138 ! Get top of callstack object -- 'src' for memcpy
139 arg2 arg4 callstack-top-offset [+] LEA
140 ! Get callstack length, in bytes --- 'len' for memcpy
141 arg3 arg4 callstack-length-offset [+] MOV
142 arg3 tag-bits get SHR
143 ! Compute new stack pointer -- 'dst' for memcpy
145 ! Install new stack pointer
147 ! Call memcpy; arguments are now in the correct registers
148 ! Create register shadow area for Win64
150 "factor_memcpy" jit-call
151 ! Tear down register shadow area
153 ! Return with new callstack
155 ] \ set-callstack define-sub-primitive
160 "lazy_jit_compile" jit-call
163 [ return-reg quot-entry-point-offset [+] CALL ]
165 \ lazy-jit-compile define-combinator-primitive
167 ! Inline cache miss entry points
168 : jit-load-return-address ( -- )
169 RBX RSP stack-frame-size bootstrap-cell - [+] MOV ;
171 ! These are always in tail position with an existing stack
172 ! frame, and the stack. The frame setup takes this into account.
173 : jit-inline-cache-miss ( -- )
177 "inline_cache_miss" jit-call
179 jit-restore-context ;
181 [ jit-load-return-address jit-inline-cache-miss ]
184 \ inline-cache-miss define-combinator-primitive
186 [ jit-inline-cache-miss ]
189 \ inline-cache-miss-tail define-combinator-primitive
191 ! Overflowing fixnum arithmetic
192 : jit-overflow ( insn func -- )
196 arg2 ds-reg 8 [+] MOV
198 [ [ arg3 arg2 ] dip call ] dip
201 [ arg3 vm-reg MOV jit-call ]
202 jit-conditional ; inline
204 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
206 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
220 arg1 tag-bits get SAR
223 "overflow_fixnum_multiply" jit-call
226 ] \ fixnum* define-sub-primitive
229 : jit-switch-context ( reg -- )
230 ! Save ds, rs registers
233 ! Make the new context the current one
235 vm-reg vm-context-offset [+] ctx-reg MOV
237 ! Load new stack pointer
238 RSP ctx-reg context-callstack-top-offset [+] MOV
240 ! Load new ds, rs registers
241 jit-restore-context ;
243 : jit-pop-context-and-param ( -- )
245 arg1 arg1 alien-offset [+] MOV
246 arg2 ds-reg -8 [+] MOV
249 : jit-push-param ( -- )
253 : jit-set-context ( -- )
254 jit-pop-context-and-param
255 arg1 jit-switch-context
259 [ jit-set-context ] \ (set-context) define-sub-primitive
261 : jit-pop-quot-and-param ( -- )
263 arg2 ds-reg -8 [+] MOV
266 : jit-start-context ( -- )
267 ! Create the new context in return-reg
269 "new_context" jit-call
271 jit-pop-quot-and-param
273 return-reg jit-switch-context
279 [ jit-start-context ] \ (start-context) define-sub-primitive
281 : jit-delete-current-context ( -- )
285 "delete_context" jit-call ;
288 jit-delete-current-context
290 ] \ (set-context-and-delete) define-sub-primitive
293 jit-delete-current-context
295 ] \ (start-context-and-delete) define-sub-primitive
297 << "vocab:cpu/x86/bootstrap.factor" parse-file suffix! >>