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 ) RAX ;
15 : temp1 ( -- reg ) RCX ;
16 : temp2 ( -- reg ) RDX ;
17 : temp3 ( -- reg ) RBX ;
18 : pic-tail-reg ( -- reg ) RBX ;
19 : return-reg ( -- reg ) RAX ;
20 : nv-reg ( -- reg ) RBX ;
21 : stack-reg ( -- reg ) RSP ;
22 : frame-reg ( -- reg ) RBP ;
23 : link-reg ( -- reg ) R11 ;
24 : ctx-reg ( -- reg ) R12 ;
25 : vm-reg ( -- reg ) R13 ;
26 : ds-reg ( -- reg ) R14 ;
27 : rs-reg ( -- reg ) R15 ;
28 : fixnum>slot@ ( -- ) temp0 1 SAR ;
29 : rex-length ( -- n ) 1 ;
31 : jit-call ( name -- )
32 RAX 0 MOV rc-absolute-cell jit-dlsym
37 RAX 0 MOV rc-absolute-cell rt-this jit-rel
38 ! save stack frame size
43 RSP stack-frame-size 3 bootstrap-cells - SUB
44 ] jit-prolog jit-define
47 pic-tail-reg 5 [RIP+] LEA
48 0 JMP rc-relative rt-entry-point-pic-tail jit-rel
49 ] jit-word-jump jit-define
51 : jit-load-context ( -- )
52 ctx-reg vm-reg vm-context-offset [+] MOV ;
54 : jit-save-context ( -- )
57 ctx-reg context-callstack-top-offset [+] R11 MOV
58 ctx-reg context-datastack-offset [+] ds-reg MOV
59 ctx-reg context-retainstack-offset [+] rs-reg MOV ;
61 : jit-restore-context ( -- )
62 ds-reg ctx-reg context-datastack-offset [+] MOV
63 rs-reg ctx-reg context-retainstack-offset [+] MOV ;
65 : jit-scrub-return ( n -- )
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
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
115 ! Load VM pointer into vm-reg, since we're entering from
117 vm-reg 0 MOV 0 rc-absolute-cell jit-vm
119 ! Load ds and rs registers
125 ] \ unwind-native-frames define-sub-primitive
128 ! Load callstack object
130 ds-reg bootstrap-cell SUB
131 ! Get ctx->callstack_bottom
133 arg1 ctx-reg context-callstack-bottom-offset [+] MOV
134 ! Get top of callstack object -- 'src' for memcpy
135 arg2 arg4 callstack-top-offset [+] LEA
136 ! Get callstack length, in bytes --- 'len' for memcpy
137 arg3 arg4 callstack-length-offset [+] MOV
138 arg3 tag-bits get SHR
139 ! Compute new stack pointer -- 'dst' for memcpy
141 ! Install new stack pointer
143 ! Call memcpy; arguments are now in the correct registers
144 ! Create register shadow area for Win64
146 "factor_memcpy" jit-call
147 ! Tear down register shadow area
149 ! Return with new callstack
151 ] \ set-callstack define-sub-primitive
156 "lazy_jit_compile" jit-call
159 [ return-reg quot-entry-point-offset [+] CALL ]
161 \ lazy-jit-compile define-combinator-primitive
164 temp2 HEX: ffffffff MOV rc-absolute-cell rt-literal jit-rel
166 ] pic-check-tuple jit-define
168 ! Inline cache miss entry points
169 : jit-load-return-address ( -- )
170 RBX RSP stack-frame-size bootstrap-cell - [+] MOV ;
172 ! These are always in tail position with an existing stack
173 ! frame, and the stack. The frame setup takes this into account.
174 : jit-inline-cache-miss ( -- )
178 "inline_cache_miss" jit-call
180 jit-restore-context ;
182 [ jit-load-return-address jit-inline-cache-miss ]
185 \ inline-cache-miss define-combinator-primitive
187 [ jit-inline-cache-miss ]
190 \ inline-cache-miss-tail define-combinator-primitive
192 ! Overflowing fixnum arithmetic
193 : jit-overflow ( insn func -- )
197 arg2 ds-reg 8 [+] MOV
199 [ [ arg3 arg2 ] dip call ] dip
202 [ arg3 vm-reg MOV jit-call ]
203 jit-conditional ; inline
205 [ [ ADD ] "overflow_fixnum_add" jit-overflow ] \ fixnum+ define-sub-primitive
207 [ [ SUB ] "overflow_fixnum_subtract" jit-overflow ] \ fixnum- define-sub-primitive
221 arg1 tag-bits get SAR
224 "overflow_fixnum_multiply" jit-call
227 ] \ fixnum* define-sub-primitive
230 : jit-switch-context ( reg -- )
233 ! Save ds, rs registers
236 ! Make the new context the current one
238 vm-reg vm-context-offset [+] ctx-reg MOV
240 ! Load new stack pointer
241 RSP ctx-reg context-callstack-top-offset [+] MOV
243 ! Load new ds, rs registers
246 ctx-reg jit-update-tib ;
248 : jit-pop-context-and-param ( -- )
250 arg1 arg1 alien-offset [+] MOV
251 arg2 ds-reg -8 [+] MOV
254 : jit-push-param ( -- )
258 : jit-set-context ( -- )
259 jit-pop-context-and-param
260 arg1 jit-switch-context
264 [ jit-set-context ] \ (set-context) define-sub-primitive
266 : jit-pop-quot-and-param ( -- )
268 arg2 ds-reg -8 [+] MOV
271 : jit-start-context ( -- )
272 ! Create the new context in return-reg
274 "new_context" jit-call
276 jit-pop-quot-and-param
278 return-reg jit-switch-context
284 [ jit-start-context ] \ (start-context) define-sub-primitive
286 : jit-delete-current-context ( -- )
290 "delete_context" jit-call ;
293 jit-delete-current-context
295 ] \ (set-context-and-delete) define-sub-primitive
298 jit-delete-current-context
300 ] \ (start-context-and-delete) define-sub-primitive