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-call ( name -- )
30 RAX 0 MOV rc-absolute-cell jit-dlsym
35 RAX 0 MOV rc-absolute-cell rt-this jit-rel
36 ! save stack frame size
41 RSP stack-frame-size 3 bootstrap-cells - SUB
42 ] jit-prolog jit-define
46 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
47 ] jit-word-jump jit-define
49 : jit-load-context ( -- )
50 ctx-reg vm-reg vm-context-offset [+] MOV ;
52 : jit-save-context ( -- )
55 ctx-reg context-callstack-top-offset [+] R11 MOV
56 ctx-reg context-datastack-offset [+] ds-reg MOV
57 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
59 : jit-restore-context ( -- )
60 ds-reg ctx-reg context-datastack-offset [+] MOV
61 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
64 ! ctx-reg is preserved across the call because it is non-volatile
69 RAX 0 MOV rc-absolute-cell rt-dlsym jit-rel
72 ] jit-primitive jit-define
74 : jit-jump-quot ( -- ) arg1 quot-entry-point-offset [+] JMP ;
76 : jit-call-quot ( -- ) arg1 quot-entry-point-offset [+] CALL ;
81 "begin_callback" jit-call
93 "end_callback" jit-call
94 ] \ c-to-factor define-sub-primitive
98 ds-reg bootstrap-cell SUB
102 \ (call) define-combinator-primitive
105 ! Clear x87 stack, but preserve rounding mode and exception flags
111 ! Unwind stack frames
114 ! Load VM pointer into vm-reg, since we're entering from
116 vm-reg 0 MOV 0 rc-absolute-cell jit-vm
118 ! Load ds and rs registers
124 ] \ unwind-native-frames define-sub-primitive
127 ! Load callstack object
129 ds-reg bootstrap-cell SUB
130 ! Get ctx->callstack_bottom
132 arg1 ctx-reg context-callstack-bottom-offset [+] MOV
133 ! Get top of callstack object -- 'src' for memcpy
134 arg2 arg4 callstack-top-offset [+] LEA
135 ! Get callstack length, in bytes --- 'len' for memcpy
136 arg3 arg4 callstack-length-offset [+] MOV
137 arg3 tag-bits get SHR
138 ! Compute new stack pointer -- 'dst' for memcpy
140 ! Install new stack pointer
142 ! Call memcpy; arguments are now in the correct registers
143 ! Create register shadow area for Win64
145 "factor_memcpy" jit-call
146 ! Tear down register shadow area
148 ! Return with new callstack
150 ] \ set-callstack define-sub-primitive
155 "lazy_jit_compile" jit-call
158 [ return-reg quot-entry-point-offset [+] CALL ]
160 \ lazy-jit-compile define-combinator-primitive
162 ! Inline cache miss entry points
163 : jit-load-return-address ( -- )
164 RBX RSP stack-frame-size bootstrap-cell - [+] MOV ;
166 ! These are always in tail position with an existing stack
167 ! frame, and the stack. The frame setup takes this into account.
168 : jit-inline-cache-miss ( -- )
172 "inline_cache_miss" jit-call
174 jit-restore-context ;
176 [ jit-load-return-address jit-inline-cache-miss ]
179 \ inline-cache-miss define-combinator-primitive
181 [ jit-inline-cache-miss ]
184 \ inline-cache-miss-tail define-combinator-primitive
186 ! Overflowing fixnum arithmetic
187 : jit-overflow ( insn func -- )
191 arg2 ds-reg 8 [+] MOV
193 [ [ arg3 arg2 ] dip call ] dip
196 [ arg3 vm-reg MOV jit-call ]
197 jit-conditional ; inline
199 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
201 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
215 arg1 tag-bits get SAR
218 "overflow_fixnum_multiply" jit-call
221 ] \ fixnum* define-sub-primitive
224 : jit-switch-context ( reg -- )
225 ! Save ds, rs registers
228 ! Make the new context the current one
230 vm-reg vm-context-offset [+] ctx-reg MOV
232 ! Load new stack pointer
233 RSP ctx-reg context-callstack-top-offset [+] MOV
235 ! Load new ds, rs registers
238 ctx-reg jit-update-tib ;
240 : jit-pop-context-and-param ( -- )
242 arg1 arg1 alien-offset [+] MOV
243 arg2 ds-reg -8 [+] MOV
246 : jit-push-param ( -- )
250 : jit-set-context ( -- )
251 jit-pop-context-and-param
252 arg1 jit-switch-context
256 [ jit-set-context ] \ (set-context) define-sub-primitive
258 : jit-pop-quot-and-param ( -- )
260 arg2 ds-reg -8 [+] MOV
263 : jit-start-context ( -- )
264 ! Create the new context in return-reg
266 "new_context" jit-call
268 jit-pop-quot-and-param
270 return-reg jit-switch-context
276 [ jit-start-context ] \ (start-context) define-sub-primitive
278 : jit-delete-current-context ( -- )
282 "delete_context" jit-call ;
285 jit-delete-current-context
287 ] \ (set-context-and-delete) define-sub-primitive
290 jit-delete-current-context
292 ] \ (start-context-and-delete) define-sub-primitive