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Clean up bootstrap.image, and implement new calling convention for tail calls; tail call sites now have PICs

db4
Slava Pestov 2009-05-06 22:04:01 -05:00
parent 12a34d81f7
commit 4915e1ced7
9 changed files with 93 additions and 129 deletions
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172
basis/bootstrap/image/image.factor
View File

@ -9,7 +9,7 @@ classes.builtin classes.tuple classes.tuple.private vocabs
vocabs.loader source-files definitions debugger quotations.private
sequences.private combinators math.order math.private accessors
slots.private generic.single.private compiler.units compiler.constants
fry ;
fry bootstrap.image.syntax ;
IN: bootstrap.image
: arch ( os cpu -- arch )
@ -123,96 +123,59 @@ SYMBOL: big-endian
! Bootstrap architecture name
SYMBOL: architecture
! Bootstrap global namesapce
SYMBOL: bootstrap-global
RESET
! Boot quotation, set in stage1.factor
SYMBOL: bootstrap-boot-quot
USERENV: bootstrap-boot-quot 20
! Bootstrap global namesapce
USERENV: bootstrap-global 21
! JIT parameters
SYMBOL: jit-prolog
SYMBOL: jit-primitive-word
SYMBOL: jit-primitive
SYMBOL: jit-word-jump
SYMBOL: jit-word-call
SYMBOL: jit-push-immediate
SYMBOL: jit-if-word
SYMBOL: jit-if
SYMBOL: jit-dip-word
SYMBOL: jit-dip
SYMBOL: jit-2dip-word
SYMBOL: jit-2dip
SYMBOL: jit-3dip-word
SYMBOL: jit-3dip
SYMBOL: jit-execute-word
SYMBOL: jit-execute-jump
SYMBOL: jit-execute-call
SYMBOL: jit-epilog
SYMBOL: jit-return
SYMBOL: jit-profiling
USERENV: jit-prolog 23
USERENV: jit-primitive-word 24
USERENV: jit-primitive 25
USERENV: jit-word-jump 26
USERENV: jit-word-call 27
USERENV: jit-word-special 28
USERENV: jit-if-word 29
USERENV: jit-if 30
USERENV: jit-epilog 31
USERENV: jit-return 32
USERENV: jit-profiling 33
USERENV: jit-push-immediate 34
USERENV: jit-dip-word 35
USERENV: jit-dip 36
USERENV: jit-2dip-word 37
USERENV: jit-2dip 38
USERENV: jit-3dip-word 39
USERENV: jit-3dip 40
USERENV: jit-execute-word 41
USERENV: jit-execute-jump 42
USERENV: jit-execute-call 43
! PIC stubs
SYMBOL: pic-load
SYMBOL: pic-tag
SYMBOL: pic-hi-tag
SYMBOL: pic-tuple
SYMBOL: pic-hi-tag-tuple
SYMBOL: pic-check-tag
SYMBOL: pic-check
SYMBOL: pic-hit
SYMBOL: pic-miss-word
SYMBOL: pic-miss-tail-word
USERENV: pic-load 47
USERENV: pic-tag 48
USERENV: pic-hi-tag 49
USERENV: pic-tuple 50
USERENV: pic-hi-tag-tuple 51
USERENV: pic-check-tag 52
USERENV: pic-check 53
USERENV: pic-hit 54
USERENV: pic-miss-word 55
USERENV: pic-miss-tail-word 56
! Megamorphic dispatch
SYMBOL: mega-lookup
SYMBOL: mega-lookup-word
SYMBOL: mega-miss-word
USERENV: mega-lookup 57
USERENV: mega-lookup-word 58
USERENV: mega-miss-word 59
! Default definition for undefined words
SYMBOL: undefined-quot
: userenvs ( -- assoc )
H{
{ bootstrap-boot-quot 20 }
{ bootstrap-global 21 }
{ jit-prolog 23 }
{ jit-primitive-word 24 }
{ jit-primitive 25 }
{ jit-word-jump 26 }
{ jit-word-call 27 }
{ jit-if-word 28 }
{ jit-if 29 }
{ jit-epilog 33 }
{ jit-return 34 }
{ jit-profiling 35 }
{ jit-push-immediate 36 }
{ jit-dip-word 38 }
{ jit-dip 39 }
{ jit-2dip-word 40 }
{ jit-2dip 41 }
{ jit-3dip-word 42 }
{ jit-3dip 43 }
{ jit-execute-word 44 }
{ jit-execute-jump 45 }
{ jit-execute-call 46 }
{ pic-load 47 }
{ pic-tag 48 }
{ pic-hi-tag 49 }
{ pic-tuple 50 }
{ pic-hi-tag-tuple 51 }
{ pic-check-tag 52 }
{ pic-check 53 }
{ pic-hit 54 }
{ pic-miss-word 55 }
{ pic-miss-tail-word 56 }
{ mega-lookup 57 }
{ mega-lookup-word 58 }
{ mega-miss-word 59 }
{ undefined-quot 60 }
} ; inline
USERENV: undefined-quot 60
: userenv-offset ( symbol -- n )
userenvs at header-size + ;
userenvs get at header-size + ;
: emit ( cell -- ) image get push ;
@ -504,11 +467,7 @@ M: quotation '
class<=-cache class-not-cache classes-intersect-cache
class-and-cache class-or-cache next-method-quot-cache
} [ H{ } clone ] H{ } map>assoc assoc-union
bootstrap-global set
bootstrap-global emit-userenv ;
: emit-boot-quot ( -- )
bootstrap-boot-quot emit-userenv ;
bootstrap-global set ;
: emit-jit-data ( -- )
\ if jit-if-word set
@ -521,43 +480,10 @@ M: quotation '
\ inline-cache-miss-tail \ pic-miss-tail-word set
\ mega-cache-lookup \ mega-lookup-word set
\ mega-cache-miss \ mega-miss-word set
[ undefined ] undefined-quot set
{
jit-prolog
jit-primitive-word
jit-primitive
jit-word-jump
jit-word-call
jit-push-immediate
jit-if-word
jit-if
jit-dip-word
jit-dip
jit-2dip-word
jit-2dip
jit-3dip-word
jit-3dip
jit-execute-word
jit-execute-jump
jit-execute-call
jit-epilog
jit-return
jit-profiling
pic-load
pic-tag
pic-hi-tag
pic-tuple
pic-hi-tag-tuple
pic-check-tag
pic-check
pic-hit
pic-miss-word
pic-miss-tail-word
mega-lookup
mega-lookup-word
mega-miss-word
undefined-quot
} [ emit-userenv ] each ;
[ undefined ] undefined-quot set ;
: emit-userenvs ( -- )
userenvs get keys [ emit-userenv ] each ;
: fixup-header ( -- )
heap-size data-heap-size-offset fixup ;
@ -574,8 +500,8 @@ M: quotation '
emit-jit-data
"Serializing global namespace..." print flush
emit-global
"Serializing boot quotation..." print flush
emit-boot-quot
"Serializing user environment..." print flush
emit-userenvs
"Performing word fixups..." print flush
fixup-words
"Performing header fixups..." print flush

1
basis/bootstrap/image/syntax/authors.txt Normal file
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@ -0,0 +1 @@
Slava Pestov

14
basis/bootstrap/image/syntax/syntax.factor Normal file
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@ -0,0 +1,14 @@
! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: parser kernel namespaces assocs words.symbol ;
IN: bootstrap.image.syntax
SYMBOL: userenvs
SYNTAX: RESET H{ } clone userenvs set-global ;
SYNTAX: USERENV:
CREATE-WORD scan-word
[ swap userenvs get set-at ]
[ drop define-symbol ]
2bi ;

7
basis/cpu/x86/bootstrap.factor
View File

@ -42,13 +42,18 @@ big-endian off
] jit-push-immediate jit-define
[
0 JMP rc-relative rt-xt jit-rel
temp3 0 MOV rc-absolute-cell rt-here jit-rel
0 JMP rc-relative rt-xt-pic-tail jit-rel
] jit-word-jump jit-define
[
0 CALL rc-relative rt-xt-pic jit-rel
] jit-word-call jit-define
[
0 JMP rc-relative rt-xt jit-rel
] jit-word-special jit-define
[
! load boolean
temp0 ds-reg [] MOV

2
vm/cpu-x86.hpp
View File

@ -7,6 +7,8 @@ namespace factor
inline static void flush_icache(cell start, cell len) {}
static const fixnum xt_tail_pic_offset = 2 * sizeof(cell) + 1;
static const unsigned char call_opcode = 0xe8;
static const unsigned char jmp_opcode = 0xe9;

2
vm/inline_cache.cpp
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@ -144,7 +144,7 @@ void inline_cache_jit::compile_inline_cache(fixnum index,
push(methods.value());
push(tag_fixnum(index));
push(cache_entries.value());
word_jump(userenv[tail_call_p ? PIC_MISS_TAIL_WORD : PIC_MISS_WORD]);
word_special(userenv[tail_call_p ? PIC_MISS_TAIL_WORD : PIC_MISS_WORD]);
}
static code_block *compile_inline_cache(fixnum index,

8
vm/jit.hpp
View File

@ -25,13 +25,19 @@ struct jit {
}
void word_jump(cell word) {
emit_with(userenv[JIT_WORD_JUMP],word);
literal(tag_fixnum(xt_tail_pic_offset));
literal(word);
emit(userenv[JIT_WORD_JUMP]);
}
void word_call(cell word) {
emit_with(userenv[JIT_WORD_CALL],word);
}
void word_special(cell word) {
emit_with(userenv[JIT_WORD_SPECIAL],word);
}
void emit_subprimitive(cell word_) {
gc_root<word> word(word_);
gc_root<array> code_template(word->subprimitive);

9
vm/quotations.cpp
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@ -152,8 +152,17 @@ void quotation_jit::iterate_quotation()
{
if(stack_frame) emit(userenv[JIT_EPILOG]);
tail_call = true;
/* Inline cache misses are special-cased */
if(obj.value() == userenv[PIC_MISS_WORD]
|| obj.value() == userenv[PIC_MISS_TAIL_WORD])
{
word_special(obj.value());
}
else
{
word_jump(obj.value());
}
}
else
word_call(obj.value());
}

5
vm/run.hpp
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@ -41,13 +41,14 @@ enum special_object {
JIT_PRIMITIVE,
JIT_WORD_JUMP,
JIT_WORD_CALL,
JIT_WORD_SPECIAL,
JIT_IF_WORD,
JIT_IF,
JIT_EPILOG = 33,
JIT_EPILOG,
JIT_RETURN,
JIT_PROFILING,
JIT_PUSH_IMMEDIATE,
JIT_DIP_WORD = 38,
JIT_DIP_WORD,
JIT_DIP,
JIT_2DIP_WORD,
JIT_2DIP,