340 lines
8.7 KiB
Factor
Executable File
340 lines
8.7 KiB
Factor
Executable File
! Copyright (C) 2005, 2008 Slava Pestov.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: accessors alien.c-types cpu.ppc.assembler
|
|
cpu.architecture generic kernel kernel.private math memory
|
|
namespaces sequences words assocs compiler.generator
|
|
compiler.generator.registers compiler.generator.fixup system
|
|
layouts classes words.private alien combinators
|
|
compiler.constants math.order ;
|
|
IN: cpu.ppc.architecture
|
|
|
|
! PowerPC register assignments
|
|
! r3-r10, r16-r31: integer vregs
|
|
! f0-f13: float vregs
|
|
! r11, r12: scratch
|
|
! r14: data stack
|
|
! r15: retain stack
|
|
|
|
: ds-reg 14 ; inline
|
|
: rs-reg 15 ; inline
|
|
|
|
: reserved-area-size
|
|
os {
|
|
{ linux [ 2 ] }
|
|
{ macosx [ 6 ] }
|
|
} case cells ; foldable
|
|
|
|
: lr-save
|
|
os {
|
|
{ linux [ 1 ] }
|
|
{ macosx [ 2 ] }
|
|
} case cells ; foldable
|
|
|
|
: param@ ( n -- x ) reserved-area-size + ; inline
|
|
|
|
: param-save-size 8 cells ; foldable
|
|
|
|
: local@ ( n -- x )
|
|
reserved-area-size param-save-size + + ; inline
|
|
|
|
: factor-area-size 2 cells ;
|
|
|
|
: next-save ( n -- i ) cell - ;
|
|
|
|
: xt-save ( n -- i ) 2 cells - ;
|
|
|
|
M: ppc stack-frame ( n -- i )
|
|
local@ factor-area-size + 4 cells align ;
|
|
|
|
M: temp-reg v>operand drop 11 ;
|
|
|
|
M: int-regs return-reg drop 3 ;
|
|
M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
|
|
M: int-regs vregs
|
|
drop {
|
|
3 4 5 6 7 8 9 10
|
|
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
|
} ;
|
|
|
|
M: float-regs return-reg drop 1 ;
|
|
M: float-regs param-regs
|
|
drop os H{
|
|
{ macosx { 1 2 3 4 5 6 7 8 9 10 11 12 13 } }
|
|
{ linux { 1 2 3 4 5 6 7 8 } }
|
|
} at ;
|
|
M: float-regs vregs drop { 0 1 2 3 4 5 6 7 8 9 10 11 12 13 } ;
|
|
|
|
GENERIC: loc>operand ( loc -- reg n )
|
|
|
|
M: ds-loc loc>operand n>> cells neg ds-reg swap ;
|
|
M: rs-loc loc>operand n>> cells neg rs-reg swap ;
|
|
|
|
M: immediate load-literal
|
|
[ v>operand ] bi@ LOAD ;
|
|
|
|
M: ppc load-indirect ( obj reg -- )
|
|
[ 0 swap LOAD32 rc-absolute-ppc-2/2 rel-literal ] keep
|
|
dup 0 LWZ ;
|
|
|
|
M: ppc %save-word-xt ( -- )
|
|
0 11 LOAD32 rc-absolute-ppc-2/2 rel-this ;
|
|
|
|
M: ppc %prologue ( n -- )
|
|
0 MFLR
|
|
1 1 pick neg ADDI
|
|
11 1 pick xt-save STW
|
|
dup 11 LI
|
|
11 1 pick next-save STW
|
|
0 1 rot lr-save + STW ;
|
|
|
|
M: ppc %epilogue ( n -- )
|
|
#! At the end of each word that calls a subroutine, we store
|
|
#! the previous link register value in r0 by popping it off
|
|
#! the stack, set the link register to the contents of r0,
|
|
#! and jump to the link register.
|
|
0 1 pick lr-save + LWZ
|
|
1 1 rot ADDI
|
|
0 MTLR ;
|
|
|
|
: (%call) 11 MTLR BLRL ;
|
|
|
|
: (%jump) 11 MTCTR BCTR ;
|
|
|
|
: %load-dlsym ( symbol dll register -- )
|
|
0 swap LOAD32 rc-absolute-ppc-2/2 rel-dlsym ;
|
|
|
|
M: ppc %call ( label -- ) BL ;
|
|
|
|
M: ppc %jump-label ( label -- ) B ;
|
|
|
|
M: ppc %jump-f ( label -- )
|
|
0 "flag" operand f v>operand CMPI BEQ ;
|
|
|
|
M: ppc %dispatch ( -- )
|
|
[
|
|
%epilogue-later
|
|
0 11 LOAD32 rc-absolute-ppc-2/2 rel-here
|
|
"offset" operand "n" operand 1 SRAWI
|
|
11 11 "offset" operand ADD
|
|
11 dup 6 cells LWZ
|
|
(%jump)
|
|
] H{
|
|
{ +input+ { { f "n" } } }
|
|
{ +scratch+ { { f "offset" } } }
|
|
} with-template ;
|
|
|
|
M: ppc %dispatch-label ( word -- )
|
|
0 , rc-absolute-cell rel-word ;
|
|
|
|
M: ppc %return ( -- ) %epilogue-later BLR ;
|
|
|
|
M: ppc %unwind drop %return ;
|
|
|
|
M: ppc %peek ( vreg loc -- )
|
|
>r v>operand r> loc>operand LWZ ;
|
|
|
|
M: ppc %replace
|
|
>r v>operand r> loc>operand STW ;
|
|
|
|
M: ppc %unbox-float ( dst src -- )
|
|
[ v>operand ] bi@ float-offset LFD ;
|
|
|
|
M: ppc %inc-d ( n -- ) ds-reg dup rot cells ADDI ;
|
|
|
|
M: ppc %inc-r ( n -- ) rs-reg dup rot cells ADDI ;
|
|
|
|
M: int-regs %save-param-reg drop 1 rot local@ STW ;
|
|
|
|
M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
|
|
|
|
GENERIC: STF ( src dst off reg-class -- )
|
|
|
|
M: single-float-regs STF drop STFS ;
|
|
|
|
M: double-float-regs STF drop STFD ;
|
|
|
|
M: float-regs %save-param-reg >r 1 rot local@ r> STF ;
|
|
|
|
GENERIC: LF ( dst src off reg-class -- )
|
|
|
|
M: single-float-regs LF drop LFS ;
|
|
|
|
M: double-float-regs LF drop LFD ;
|
|
|
|
M: float-regs %load-param-reg >r 1 rot local@ r> LF ;
|
|
|
|
M: stack-params %load-param-reg ( stack reg reg-class -- )
|
|
drop >r 0 1 rot local@ LWZ 0 1 r> param@ STW ;
|
|
|
|
M: stack-params %save-param-reg ( stack reg reg-class -- )
|
|
#! Funky. Read the parameter from the caller's stack frame.
|
|
#! This word is used in callbacks
|
|
drop
|
|
0 1 rot param@ stack-frame* + LWZ
|
|
0 1 rot local@ STW ;
|
|
|
|
M: ppc %prepare-unbox ( -- )
|
|
! First parameter is top of stack
|
|
3 ds-reg 0 LWZ
|
|
ds-reg dup cell SUBI ;
|
|
|
|
M: ppc %unbox ( n reg-class func -- )
|
|
! Value must be in r3
|
|
! Call the unboxer
|
|
f %alien-invoke
|
|
! Store the return value on the C stack
|
|
over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
|
|
|
|
M: ppc %unbox-long-long ( n func -- )
|
|
! Value must be in r3:r4
|
|
! Call the unboxer
|
|
f %alien-invoke
|
|
! Store the return value on the C stack
|
|
[
|
|
3 1 pick local@ STW
|
|
4 1 rot cell + local@ STW
|
|
] when* ;
|
|
|
|
M: ppc %unbox-large-struct ( n size -- )
|
|
! Value must be in r3
|
|
! Compute destination address
|
|
4 1 roll local@ ADDI
|
|
! Load struct size
|
|
5 LI
|
|
! Call the function
|
|
"to_value_struct" f %alien-invoke ;
|
|
|
|
M: ppc %box ( n reg-class func -- )
|
|
! If the source is a stack location, load it into freg #0.
|
|
! If the source is f, then we assume the value is already in
|
|
! freg #0.
|
|
>r
|
|
over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if
|
|
r> f %alien-invoke ;
|
|
|
|
M: ppc %box-long-long ( n func -- )
|
|
>r [
|
|
3 1 pick local@ LWZ
|
|
4 1 rot cell + local@ LWZ
|
|
] when* r> f %alien-invoke ;
|
|
|
|
: temp@ stack-frame* factor-area-size - swap - ;
|
|
|
|
: struct-return@ ( size n -- n ) [ local@ ] [ temp@ ] ?if ;
|
|
|
|
M: ppc %prepare-box-struct ( size -- )
|
|
#! Compute target address for value struct return
|
|
3 1 rot f struct-return@ ADDI
|
|
3 1 0 local@ STW ;
|
|
|
|
M: ppc %box-large-struct ( n size -- )
|
|
#! If n = f, then we're boxing a returned struct
|
|
[ swap struct-return@ ] keep
|
|
! Compute destination address
|
|
3 1 roll ADDI
|
|
! Load struct size
|
|
4 LI
|
|
! Call the function
|
|
"box_value_struct" f %alien-invoke ;
|
|
|
|
M: ppc %prepare-alien-invoke
|
|
#! Save Factor stack pointers in case the C code calls a
|
|
#! callback which does a GC, which must reliably trace
|
|
#! all roots.
|
|
"stack_chain" f 11 %load-dlsym
|
|
11 11 0 LWZ
|
|
1 11 0 STW
|
|
ds-reg 11 8 STW
|
|
rs-reg 11 12 STW ;
|
|
|
|
M: ppc %alien-invoke ( symbol dll -- )
|
|
11 %load-dlsym (%call) ;
|
|
|
|
M: ppc %alien-callback ( quot -- )
|
|
3 load-indirect "c_to_factor" f %alien-invoke ;
|
|
|
|
M: ppc %prepare-alien-indirect ( -- )
|
|
"unbox_alien" f %alien-invoke
|
|
3 1 cell temp@ STW ;
|
|
|
|
M: ppc %alien-indirect ( -- )
|
|
11 1 cell temp@ LWZ (%call) ;
|
|
|
|
M: ppc %callback-value ( ctype -- )
|
|
! Save top of data stack
|
|
3 ds-reg 0 LWZ
|
|
3 1 0 local@ STW
|
|
! Restore data/call/retain stacks
|
|
"unnest_stacks" f %alien-invoke
|
|
! Restore top of data stack
|
|
3 1 0 local@ LWZ
|
|
! Unbox former top of data stack to return registers
|
|
unbox-return ;
|
|
|
|
M: ppc %cleanup ( alien-node -- ) drop ;
|
|
|
|
: %untag ( src dest -- ) 0 0 31 tag-bits get - RLWINM ;
|
|
|
|
: %tag-fixnum ( src dest -- ) tag-bits get SLWI ;
|
|
|
|
: %untag-fixnum ( dest src -- ) tag-bits get SRAWI ;
|
|
|
|
M: ppc value-structs?
|
|
#! On Linux/PPC, value structs are passed in the same way
|
|
#! as reference structs, we just have to make a copy first.
|
|
os linux? not ;
|
|
|
|
M: ppc fp-shadows-int? ( -- ? ) os macosx? ;
|
|
|
|
M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
|
|
|
|
M: ppc struct-small-enough? ( size -- ? ) drop f ;
|
|
|
|
M: ppc %box-small-struct
|
|
drop "No small structs" throw ;
|
|
|
|
M: ppc %unbox-small-struct
|
|
drop "No small structs" throw ;
|
|
|
|
! Alien intrinsics
|
|
M: ppc %unbox-byte-array ( dst src -- )
|
|
[ v>operand ] bi@ byte-array-offset ADDI ;
|
|
|
|
M: ppc %unbox-alien ( dst src -- )
|
|
[ v>operand ] bi@ alien-offset LWZ ;
|
|
|
|
M: ppc %unbox-f ( dst src -- )
|
|
drop 0 swap v>operand LI ;
|
|
|
|
M: ppc %unbox-any-c-ptr ( dst src -- )
|
|
{ "is-byte-array" "end" "start" } [ define-label ] each
|
|
! Address is computed in R12
|
|
0 12 LI
|
|
! Load object into R11
|
|
11 swap v>operand MR
|
|
! We come back here with displaced aliens
|
|
"start" resolve-label
|
|
! Is the object f?
|
|
0 11 f v>operand CMPI
|
|
! If so, done
|
|
"end" get BEQ
|
|
! Is the object an alien?
|
|
0 11 header-offset LWZ
|
|
0 0 alien type-number tag-fixnum CMPI
|
|
"is-byte-array" get BNE
|
|
! If so, load the offset
|
|
0 11 alien-offset LWZ
|
|
! Add it to address being computed
|
|
12 12 0 ADD
|
|
! Now recurse on the underlying alien
|
|
11 11 underlying-alien-offset LWZ
|
|
"start" get B
|
|
"is-byte-array" resolve-label
|
|
! Add byte array address to address being computed
|
|
12 12 11 ADD
|
|
! Add an offset to start of byte array's data area
|
|
12 12 byte-array-offset ADDI
|
|
"end" resolve-label
|
|
! Done, store address in destination register
|
|
v>operand 12 MR ;
|