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This commit is contained in:
ceriel 1988-09-28 16:47:47 +00:00
parent 391d115b4d
commit 6ae90c8f34
15 changed files with 2118 additions and 0 deletions
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15
mach/sun3/ce/.distr Normal file
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EM_table
Make.back
Makefile
as.c
as.h
as_table
do_close.c
do_open.c
end_back.c
lib
mach.c
mach.h
misc.c
output.c
relocation.c

805
mach/sun3/ce/EM_table Normal file
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#define small(x) ((x)>=1 && (x)<=8)
/******************************************************************************/
/* */
/* Group 1 : Load instructions */
/* */
/******************************************************************************/
/* a6 : local base.
* sp : stack pointer
*/
C_loc ==> "pea ($1)".
C_lol ==> "move.l ($1, a6), -(sp)".
C_loe.. ==> "move.l ($1+$2), -(sp)".
C_lil ==> "move.l ([$1,a6]), -(sp)".
C_lof ==> "move.l (sp)+, a0";
"move.l ($1,a0), -(sp)".
C_lal ==> "pea ($1,a6)".
C_lae.. ==> "pea ($1+$2)".
C_lxl
$1 == 0 ==> "move.l a6, -(sp)".
$1 == 1 ==> "move.l (8, a6), -(sp)".
default ==> "move.l (8, a6), a0";
"move.l #$1-2, d0";
"1: move.l (8,a0), a0";
"dbf d0, 1b";
"move.l a0, -(sp)".
C_lxa
$1 == 0 ==> "pea (8,a6)".
$1 == 1 ==> "pea ([8,a6],8)".
default ==> "move.l (8, a6), a0";
"move.l #$1-2, d0";
"1: move.l (8,a0), a0";
"dbf d0, 1b";
"pea (8,a0)".
C_loi
$1 == 1 ==> "move.l (sp)+, a0";
"clr.l -(sp)";
"move.b (a0), (3,sp)".
$1 == 2 ==> "move.l (sp)+, a0";
"clr.l -(sp)";
"move.w (a0), (2,sp)".
$1 == 4 ==> "move.l (sp)+, a0";
"move.l (a0), -(sp)".
$1 == 8 ==> "move.l (sp)+, a0";
"move.l (4,a0), -(sp)";
"move.l (a0), -(sp)".
$1 % 4 == 0 ==> "move.l (sp)+, a0";
"move.l #$1/4-1, d0";
"add.l #$1, a0";
"1:";
"move.l -(a0), -(sp)";
"dbf d0, 1b".
default ==> arg_error( "loi", $1).
C_los
$1 == 4 ==> "jsr (.los)".
default ==> arg_error( "los", $1).
C_ldl ==> "move.l ($1+4, a6), -(sp)";
"move.l ($1, a6), -(sp)".
C_lde.. ==> "move.l ($1+$2+4), -(sp)";
"move.l ($1+$2), -(sp)".
C_ldf ==> "move.l (sp)+, a0";
"move.l ($1+4,a0), -(sp)";
"move.l ($1,a0), -(sp)".
C_lpi ==> "pea ($1)".
/******************************************************************************/
/* */
/* Group 2 : Store instructions */
/* */
/******************************************************************************/
C_stl ==> "move.l (sp)+, ($1,a6)".
C_ste.. ==> "move.l (sp)+, ($1+$2)".
C_sil ==> "move.l (sp)+, ([$1,a6])".
C_stf ==> "move.l (sp)+, a0";
"move.l (sp)+, ($1,a0)".
C_sti
$1 == 1 ==> "move.l (sp)+, a0";
"move.l (sp)+, d0";
"move.b d0, (a0)".
$1 == 2 ==> "move.l (sp)+, a0";
"move.l (sp)+, d0";
"move.w d0, (a0)".
$1 == 4 ==> "move.l (sp)+, a0";
"move.l (sp)+, (a0)".
$1 % 4 == 0 ==> "move.l (sp)+, a0";
"move.l #$1/4-1, d0";
"1:move.l (sp)+, (a0)+";
"dbf d0, 1b".
default ==> arg_error( "sti", (arith) $1).
C_sts ==> "jsr (.sts)".
C_sdl ==> "move.l (sp)+, ($1,a6)";
"move.l (sp)+, ($1+4,a6)".
C_sde.. ==> "move.l (sp)+, ($1+$2)";
"move.l (sp)+, ($1+$2+4)".
C_sdf ==> "move.l (sp)+, a0";
"move.l (sp)+, ($1,a0)";
"move.l (sp)+, ($1+4,a0)".
/******************************************************************************/
/* */
/* Group 3 : Integer arithmetic */
/* */
/******************************************************************************/
C_adi
$1 == 4 ==> "move.l (sp)+, d0";
"add.l d0, (sp)".
default ==> arg_error( "adi", $1).
C_sbi
$1 == 4 ==> "move.l (sp)+, d0";
"sub.l d0, (sp)".
default ==> arg_error( "sbi", $1).
C_mli
$1 == 4 ==> "move.l (sp)+, d0";
"muls.l (sp)+, d0";
"move.l d0, -(sp)".
default ==> arg_error( "mli", $1).
C_dvi
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"divs.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "dvi", $1).
C_rmi
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"divsl.l d0, d2:d1";
"move.l d2, -(sp)".
default ==> arg_error( "rmi", $1).
C_ngi
$1 == 4 ==> "neg.l (sp)".
default ==> arg_error( "ngi", $1).
C_sli
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"asl.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "sli", $1).
C_sri
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"asr.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "sri", $1).
/******************************************************************************/
/* */
/* Group 4 : Unsigned arithmetic */
/* */
/******************************************************************************/
C_adu ==> C_adi( w).
C_sbu ==> C_sbi( w).
C_mlu
$1 == 4 ==> "move.l (sp)+, d0";
"mulu.l (sp)+, d0";
"move.l d0, -(sp)".
default ==> arg_error( "mlu", $1).
C_dvu
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"divu.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "dvu", $1).
C_rmu
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"divul.l d0, d2:d1";
"move.l d2, -(sp)".
default ==> arg_error( "rmu", $1).
C_slu ==> C_sli( w).
C_sru
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"lsr.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "sru", $1).
/******************************************************************************/
/* */
/* Group 5 : Floating point arithmetic */
/* */
/******************************************************************************/
C_adf
$1 == 4 ==> "jsr (adf4)".
$1 == 8 ==> "jsr (adf8)".
default ==> arg_error( "adf", $1).
C_sbf
$1 == 4 ==> "jsr (sbf4)".
$1 == 8 ==> "jsr (sbf8)".
default ==> arg_error( "sbf", $1).
C_mlf
$1 == 4 ==> "jsr (mlf4)".
$1 == 8 ==> "jsr (mlf8)".
default ==> arg_error( "mlf", $1).
C_dvf
$1 == 4 ==> "jsr (dvf4)".
$1 == 8 ==> "jsr (dvf8)".
default ==> arg_error( "dvf", $1).
C_ngf ==> "move.l #7,d0";
"bchg d0,(sp)".
C_fif
$1 == 4 ==> "jsr (fif4)".
$1 == 8 ==> "jsr (fif8)".
default ==> arg_error( "fif", $1).
C_fef
$1 == 4 ==> "jsr (fef4)".
$1 == 8 ==> "jsr (fef8)".
default ==> arg_error( "fef", $1).
/******************************************************************************/
/* */
/* Group 6 : Pointer arithmetic */
/* */
/******************************************************************************/
C_adp
$1 == 0 ==> .
default ==> "add.l #$1, (sp)".
C_ads
$1 == 4 ==> "move.l (sp)+, d0";
"add.l d0, (sp)".
default ==> arg_error( "ads", $1).
C_sbs
$1 == 4 ==> "move.l (sp)+, d0";
"sub.l d0, (sp)".
default ==> arg_error( "sbs", $1).
/******************************************************************************/
/* */
/* Group 7 : Increment/decrement/zero */
/* */
/******************************************************************************/
C_inc ==> "add.l #1, (sp)".
C_inl ==> "add.l #1, ($1, a6)".
C_ine.. ==> "add.l #1, ($1+$2)".
C_dec ==> "sub.l #1, (sp)".
C_del ==> "sub.l #1, ($1, a6)".
C_dee.. ==> "sub.l #1, ($1+$2)".
C_zrl ==> "clr.l ($1, a6)".
C_zre.. ==> "clr.l ($1+$2)".
C_zrf ==> C_zer( $1).
C_zer
$1 == 4 ==> "clr.l -(sp)".
$1 == 8 ==> "clr.l -(sp)";
"clr.l -(sp)".
default ==> "move.l #$1/4-1, d0";
"1:";
"clr.l -(sp)";
"dbf d0, 1b".
/******************************************************************************/
/* */
/* Group 8 : Convert */
/* */
/******************************************************************************/
C_cii ==> " move.l (sp), d0";
" move.l (4, sp), d1";
" cmp.l d1, d0";
" ble 4f";
" cmp.l #4, d1";
" bge 4f";
" move.l (8, sp), d2";
" cmp.l #1, d1";
" bne 2f";
" cmp.l #2, d0";
" bne 1f";
" ext.w d2";
" bra 3f";
"1: extl.l d2";
" bra 3f";
"2: ext.l d2";
"3: move.l d2, (8, sp)";
" move.l #4, (4, sp)";
"4: jsr (.cii)".
C_cuu ==> "lea (8,sp),sp".
C_ciu ==> C_cuu().
C_cui ==> C_cuu().
C_cfi ==> "jsr (cfi)".
C_cfu ==> "jsr (cfu)".
C_cff ==> "jsr (cff)".
C_cif ==> "jsr (cif)".
C_cuf ==> "jsr (cuf)".
/******************************************************************************/
/* */
/* Group 9 : Logical */
/* */
/******************************************************************************/
C_and
$1 == 4 ==> "move.l (sp)+, d0";
"and.l d0, (sp)".
default ==> "move.l #$1/4-1, d0";
"lea ($1, sp), a0";
"1:";
"move.l (sp)+, d1";
"and.l d1, (a0)+";
"dbf d0, 1b".
C_ior
$1 == 4 ==> "move.l (sp)+, d0";
"or.l d0, (sp)".
default ==> "move.l #$1/4-1, d0";
"lea ($1, sp), a0";
"1:";
"move.l (sp)+, d1";
"or.l d1, (a0)+";
"dbf d0, 1b".
C_xor
$1 == 4 ==> "move.l (sp)+, d0";
"eor.l d0, (sp)".
default ==> "move.l #$1/4-1, d0";
"lea ($1, sp), a0";
"1:";
"move.l (sp)+, d1";
"eor.l d1, (a0)+";
"dbf d0, 1b".
C_com
$1 == 4 ==> "not.l (sp)".
$1 == 8 ==> "not.l (sp)";
"not.l (4, sp)".
default ==> "move.l #$1/4-1, d0";
"move.l sp, a0";
"1:";
"not.l (a0)+";
"dbf d0, 1b".
C_rol
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"rol.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "rol", $1).
C_ror
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"ror.l d0, d1";
"move.l d1, -(sp)".
default ==> arg_error( "ror", $1).
/******************************************************************************/
/* */
/* Group 10 : Sets */
/* */
/******************************************************************************/
C_inn
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"btst d0, d1";
"sne d1";
"and.l #1, d1";
"move.l d1, -(sp)".
default ==> "move.l (sp)+, d0";
"move.l #$1, d1";
"jsr (.inn)";
"move.l d0, -(sp)".
C_inn_narg ==> "move.l (sp)+, d1";
"move.l (sp)+, d0";
"jsr (.inn)";
"move.l d0, -(sp)".
C_set
$1 == 4 ==> "move.l (sp)+, d0";
"clr.l d1";
"bset d0, d1";
"move.l d1, -(sp)".
default ==> "move.l (sp)+, d0";
"move.l #$1, d1";
"jsr (.set)".
C_set_narg ==> "move.l (sp)+, d1";
"move.l (sp)+, d0";
"jsr (.set)".
/******************************************************************************/
/* */
/* Group 11 : Array */
/* */
/******************************************************************************/
C_lar ==> "move.l #$1, d0";
"jsr (.lar)".
C_lar_narg ==> "move.l (sp)+, d0";
"jsr (.lar)".
C_sar ==> "move.l #$1, d0";
"jsr (.sar)".
C_sar_narg ==> "move.l (sp)+, d0";
"jsr (.sar)".
C_aar ==> "move.l #$1, d0";
"jsr (.aar)";
"move.l a0, -(sp)".
C_aar_narg ==> "move.l (sp)+, d0";
"jsr (.aar)";
"move.l a0, -(sp)".
/******************************************************************************/
/* */
/* Group 12 : Compare */
/* */
/******************************************************************************/
C_cmi
$1 == 4 ==> "clr.l d0";
"cmp.l (sp)+, (sp)+";
"beq 2f";
"blt 1f";
"add.l #1, d0";
"bra 2f";
"1 : sub.l #1, d0";
"2 : move.l d0, -(sp)".
default ==> "move.l #$1, d0";
"jsr (.cmi)";
"move.l d0, -(sp)".
C_cmu
$1 == 4 ==> "clr.l d0";
"cmp.l (sp)+, (sp)+";
"beq 2f";
"bcs 1f";
"add.l #1, d0";
"bra 2f";
"1 : sub.l #1, d0";
"2 : move.l d0, -(sp)".
default ==> "move.l #$1, d0";
"jsr (.cmu)";
"move.l d0, -(sp)".
C_cmu_narg ==> "move.l (sp)+, d0";
"jsr (.cmu)";
"move.l d0, -(sp)".
C_cms ==> "move.l #$1, d0";
"jsr (.cms)";
"move.l d0, -(sp)".
C_cms_narg ==> "move.l (sp)+, d0";
"jsr (.cms)";
"move.l d0, -(sp)".
C_cmp ==> C_cmu( (arith)4).
C_tlt ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"blt 1f";
"clr.l (sp)";
"1:".
C_tle ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"ble 1f";
"clr.l (sp)";
"1:".
C_teq ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"beq 1f";
"clr.l (sp)";
"1:".
C_tne ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"bne 1f";
"clr.l (sp)";
"1:".
C_tge ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"bge 1f";
"clr.l (sp)";
"1:".
C_tgt ==> "move.l (sp)+, d0";
"move.l #1, -(sp)";
"tst.l d0";
"bgt 1f";
"clr.l (sp)";
"1:".
C_cmf
$1 == 4 ==> "jsr (cmf4)".
$1 == 8 ==> "jsr (cmf8)".
default ==> arg_error("cmf", $1).
/******************************************************************************/
/* */
/* Group 13 : Branch */
/* */
/******************************************************************************/
C_bra ==> "bra $1".
C_blt ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"bgt $1".
C_ble ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"bge $1".
C_beq ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"beq $1".
C_bne ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"bne $1".
C_bge ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"ble $1".
C_bgt ==> "move.l (sp)+, d0";
"cmp.l (sp)+, d0";
"blt $1".
C_zlt ==> "tst.l (sp)+";
"blt $1".
C_zle ==> "tst.l (sp)+";
"ble $1".
C_zeq ==> "tst.l (sp)+";
"beq $1".
C_zne ==> "tst.l (sp)+";
"bne $1".
C_zge ==> "tst.l (sp)+";
"bge $1".
C_zgt ==> "tst.l (sp)+";
"bgt $1".
/******************************************************************************/
/* */
/* Group 14 : Procedure call instructions */
/* */
/******************************************************************************/
C_cai ==> "move.l (sp)+, a0";
"jsr (a0)".
C_cal ==> "jsr ($1)".
C_lfr
$1 == 4 ==> "move.l d0, -(sp)".
$1 == 8 ==> "move.l d1, -(sp)";
"move.l d0, -(sp)".
default ==> arg_error( "lfr", $1).
C_ret
$1 == 0 ==> "unlk a6";
"rts".
$1 == 4 ==> "move.l (sp)+, d0";
"unlk a6";
"rts".
$1 == 8 ==> "move.l (sp)+, d0";
"move.l (sp)+, d1";
"unlk a6";
"rts".
default ==> arg_error( "ret", $1).
/******************************************************************************/
/* */
/* Group 15 : Miscellaneous instructions */
/* */
/******************************************************************************/
C_asp
small( $1) ==> "add.l #$1, sp".
default ==> "lea ($1, sp), sp".
C_ass
$1 == 4 ==> "add.l (sp)+, sp".
default ==> arg_error( "ass", $1).
C_blm
$1 == 4 ==> "move.l (sp)+, a0";
"move.l (sp)+, a1";
"move.l (a1), (a0)".
$1 == 8 ==> "move.l (sp)+, a0";
"move.l (sp)+, a1";
"move.l (a1), (a0)";
"move.l (4, a1), (4, a0)".
default ==> "move.l (sp)+, a0";
"move.l (sp)+, a1";
"move.l #$1/4-1, d0";
"1:";
"move.l (a1)+, (a0)+";
"dbf d0, 1b".
C_bls
$1 == 4 ==> "move.l (sp)+, d0";
"move.l (sp)+, a0";
"move.l (sp)+, a1";
"asr.l #2, d1";
"beq 2f";
"1:";
"move.l (a1)+, (a0)+";
"dbf d0, 1b";
"2:".
default ==> arg_error( "bls", $1).
C_csa
$1 == 4 ==> "jmp (.csa)".
default ==> arg_error( "csa", $1).
C_csb
$1 == 4 ==> "jmp (.csb)".
default ==> arg_error( "csb", $1).
C_dch ==> C_loi( (arith)4).
C_dup
$1 == 4 ==> "move.l (sp), -(sp)".
$1 == 4 ==> "move.l (4, sp), -(sp)";
"move.l (4, sp), -(sp)".
default ==> "move.l #$1/4-1, d0";
"1:";
"move.l ($1-4, sp), -(sp)";
"dbf d0, 1b".
C_dus
$1 == 4 ==> "move.l (sp)+, d0";
"lea (0, sp, d0.l*1), a0";
"asr.l #2, d0";
"beq 2f";
"sub.l #1, d0";
"1:";
"move.l -(a0), -(sp)";
"dbf d0, 1b";
"2:".
default ==> arg_error( "dus", $1).
C_exg ==> "move.l #$1, d0";
"jsr (.exg)".
C_fil.. ==> "move.l #$1+$2, (.filn)".
C_gto.. ==> "move.l #$1+$2, a0";
"move.l (8, a0), a6";
"move.l (4, a0), sp";
"jmp ([0,a0], 0)".
C_lim ==> "move.l (.trpim), -(sp)".
C_lin ==> "move.l #$1, (.lino)".
C_lni ==> "add.l #1, (.lino)".
C_lor
$1 == 0 ==> "move.l a6, -(sp)".
$1 == 1 ==> "move.l sp, -(sp)".
$1 == 2 ==> "move.l (.reghp), -(sp)".
default ==> arg_error( "lor", $1).
C_lpb ==> C_adp( (arith)8).
C_mon ==> "jsr (.mon)".
C_nop ==> "jsr (.nop)".
C_rck
$1 == 4 ==> "move.l (sp)+, a0";
"move.l (sp)+, d0";
"cmp2.l (a0), d0";
"bcc 1f";
"pea (1)"; /* push constant 1 == ERANGE */
"jsr (.trp)";
"1: move.l d0, -(sp)".
default ==> arg_error( "rck", $1).
C_rtt ==> C_ret( (arith)0).
C_sig ==> "move.l (.trppc), a0";
"move.l (sp)+, (.trppc)";
"move.l a0, -(sp)".
C_sim ==> "move.l (sp)+, (.trpim)".
C_str
$1 == 0 ==> "move.l (sp)+, a6".
$1 == 1 ==> "move.l (sp)+, sp".
$1 == 2 ==> "jsr (.strhp)".
default ==> arg_error( "str", $1).
C_trp ==> "jsr (.trp)".
/*****************************************************************************/
..icon
$2 == 1 ==> gen1( (ONE_BYTE) atoi( $1)).
$2 == 2 ==> gen2( (TWO_BYTES) atoi( $1)).
$2 == 4 ==> gen4( (FOUR_BYTES) atol( $1)).
default ==> arg_error( "icon", $2).
..ucon
$2 == 1 ==> gen1( (ONE_BYTE) atoi( $1)).
$2 == 2 ==> gen2( (TWO_BYTES) atoi( $1)).
$2 == 4 ==> gen4( (FOUR_BYTES) atol( $1)).
default ==> arg_error( "icon", $2).
..fcon ==> con_float($1, $2).
/*****************************************************************************/
prolog ==> .
jump ==> "jmp $1".
locals ==> "link a6, #-$1".

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EMHOME=../../../..
CEG=$(EMHOME)/lib/ceg
SOURCE=$(CEG)/ce_back/obj_back
CFLAGS=-O
CC=cc
IDIRS=-I.\
-I..\
-I$(EMHOME)/h\
-I$(EMHOME)/modules/h
all : data.o con2.o con4.o relocation.o end_back.o gen1.o gen2.o\
gen4.o init_back.o mysprint.o output.o reloc1.o reloc2.o reloc4.o\
rom2.o rom4.o set_global.o set_local.o switchseg.o symboldef.o text2.o\
text4.o do_open.o do_close.o memory.o label.o misc.o extnd.o symtable.o\
common.o
data.o : data.h back.h header.h $(SOURCE)/data.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/data.c
memory.o :data.h back.h header.h $(SOURCE)/memory.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/memory.c
con2.o : data.h back.h header.h $(SOURCE)/con2.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/con2.c
con4.o : data.h back.h header.h $(SOURCE)/con4.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/con4.c
relocation.o : data.h back.h ../mach.h ../relocation.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../relocation.c
do_open.o : data.h back.h ../mach.h ../do_open.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../do_open.c
do_close.o : data.h back.h ../mach.h ../do_close.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../do_close.c
gen1.o : data.h back.h header.h $(SOURCE)/gen1.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/gen1.c
gen2.o : data.h back.h header.h $(SOURCE)/gen2.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/gen2.c
gen4.o : data.h back.h header.h $(SOURCE)/gen4.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/gen4.c
init_back.o : data.h back.h ../mach.h $(SOURCE)/init_back.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/init_back.c
end_back.o : data.h back.h ../mach.h ../end_back.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../end_back.c
mysprint.o : data.h back.h data.h $(SOURCE)/mysprint.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/mysprint.c
output.o : data.h back.h ../mach.h ../output.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../output.c
reloc1.o : data.h back.h header.h $(SOURCE)/reloc1.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/reloc1.c
reloc2.o : data.h back.h header.h $(SOURCE)/reloc2.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/reloc2.c
reloc4.o : data.h back.h header.h $(SOURCE)/reloc4.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/reloc4.c
rom2.o : data.h back.h header.h $(SOURCE)/rom2.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/rom2.c
rom4.o : data.h back.h header.h $(SOURCE)/rom4.c
$(CC) $(CFLAGS) -c $(IDIRS) $(SOURCE)/rom4.c
set_global.o : data.h back.h ../mach.h $(SOURCE)/set_global.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/set_global.c
set_local.o : data.h back.h ../mach.h $(SOURCE)/set_local.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/set_local.c
switchseg.o : data.h back.h ../mach.h $(SOURCE)/switchseg.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/switchseg.c
symboldef.o : data.h back.h ../mach.h $(SOURCE)/symboldef.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/symboldef.c
text2.o : data.h back.h ../mach.h $(SOURCE)/text2.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/text2.c
text4.o : data.h back.h ../mach.h $(SOURCE)/text4.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/text4.c
symtable.o : data.h back.h ../mach.h $(SOURCE)/symtable.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/symtable.c
extnd.o : data.h back.h ../mach.h $(SOURCE)/extnd.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/extnd.c
misc.o : data.h back.h ../mach.h $(SOURCE)/misc.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. ../misc.c
label.o : data.h back.h ../mach.h $(SOURCE)/label.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/label.c
common.o : data.h back.h ../mach.h $(SOURCE)/common.c
$(CC) $(CFLAGS) -c $(IDIRS) -I.. $(SOURCE)/common.c

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EMHOME=../../..
BACK=$(EMHOME)/lib/ceg/ce_back
install : back.a
install_ceg
clean:
rm -rf back.a back
back.a :
-mkdir back
cp $(BACK)/obj_back/*h back
cp Make.back back/Makefile
( cd back; make)
ar r back.a back/*o;
-ranlib back.a

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#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include "as.h"
#include "arg_type.h"
process_label() {}
process_mnemonic( m)
char *m;
{
for ( ; *m != '\0'; m++)
if ( *m == '.')
*m = '_';
}
process_operand( str, op)
char *str;
struct t_operand *op;
{
char *glob_lbl();
op->type = 0;
switch ( *str) {
case '#' : op->type = IS_IMMEDIATE;
op->expr = str+1;
if ( *(op->expr) != '$') { /* #1 */
op->val = atoi( str+1);
if ( 1 <= op->val && op->val <= 8 ) {
op->type = IS_QUICK;
op->lbl = NULL;
}
}
else
if ( arg_type( str+1) == STRING) { /* #$1+$2 */
op->lbl = op->expr;
*(op->lbl+2) = '\0';
op->expr = op->lbl+3;
}
else /* #$1 */
op->lbl = NULL;
break;
case '(' : if ( index( str+1, ',') == NULL)
if ( is_reg( str+1)) {
op->reg = reg_val( str+1);
if ( *(str+4) == '+') /* (sp)+ */
op->type = IS_INCR;
else /* (a0) */
op->type = IS_IND_REG;
}
else {
op->type = IS_IND_MEM;
op->expr = str+1;
for ( str++; *++str != ')';)
;
*str = '\0';
if ( *(op->expr) == '$')
if ( arg_type( op->expr) == STRING) {
/* ($1+$2) */
op->lbl = op->expr;
if ( strlen( op->lbl) == 2)
op->expr = "0";
else {
*(op->lbl+2) = '\0';
op->expr = op->lbl+3;
}
}
else /* ($1) */
op->lbl = NULL;
else if ( isdigit( *(op->expr))) /* (1) */
op->lbl = NULL;
else { /* (.trppc) */
op->lbl = glob_lbl( op->expr);
op->expr = "0";
}
}
else
if ( *(str+1) == '[') {
op->type = IS_IND_IND;
op->expr = str+2;
for ( str += 2; *++str != ',';)
;
*str++ = '\0';
for ( ; *str == ' '; str++)
;
op->reg = reg_val( str);
for ( ; *str++ != ']';)
;
if ( *str == ')') /* ([$1, a6]) */
op->expr2 = 0;
else { /* ([8,a6],8) */
for ( ; *str++ != ',';)
;
for ( ; *str == ' '; str++)
;
op->expr2 = atoi( str);
}
}
else {
op->expr = str+1;
for ( str++; *++str != ',';)
;
*str++ = '\0';
for ( ; *str == ' '; str++)
;
op->reg = reg_val( str);
if ( *(str+2) == ')') /* (4, a0) */
op->type = IS_IND_REG_DISPL;
else { /* (0, sp, d0.l*1) */
op->type = IS_3_OPS;
for ( str++; *++str != ',';)
;
for ( ; *str == ' '; str++)
;
op->reg2 = reg_val( str);
for ( ; *str++ != '*';)
;
op->scale = atoi( str);
}
}
break;
case '-' : op->type = IS_DECR; /* -(sp) */
op->reg = reg_val( str+2);
break;
case '$' : op->type = IS_GLOB_LBL; /* $1 */
op->lbl = str;
op->expr ="0";
break;
default : if ( is_reg( str)) {
op->reg = reg_val( str);
if ( *(str+2) == ':') { /* d2:d1 */
op->type = IS_REG_PAIR;
op->reg2 = reg_val( str+3);
}
else /* a6 */
op->type = ( *str == 'd' ? IS_D_REG : IS_A_REG);
}
else if ( isdigit( *str)) { /* 1f */
op->type = IS_LOC_LBL;
op->lbl = str;
op->expr = "0";
*(str+1) ='\0';
}
else { /* .strhp */
op->type = IS_GLOB_LBL;
op->lbl = glob_lbl( str);
*(str+1) ='\0';
op->expr = "0";
}
}
}
int reg_val( reg)
char *reg;
{
return( *reg == 's' ? 7 : atoi( reg+1));
}
int is_reg( str)
char *str;
{
switch ( *str) {
case 'a' :
case 'd' : return( isdigit( *(str+1)));
case 's' : return( *(str+1) == 'p');
default : return( 0);
}
}
char *glob_lbl( lbl)
char *lbl;
{
char *gl, *malloc();
gl = malloc( strlen( lbl) + 3);
sprintf( gl, "\"%s\"", lbl);
return( gl);
}
/******************************************************************************/
int mode_reg( eaddr)
struct t_operand *eaddr;
{
switch ( eaddr->type) {
case IS_A_REG : return( 0x08 | eaddr->reg);
case IS_D_REG : return( 0x00 | eaddr->reg);
case IS_IND_REG : return( 0x10 | eaddr->reg);
case IS_INCR : return( 0x18 | eaddr->reg);
case IS_DECR : return( 0x20 | eaddr->reg);
case IS_IND_MEM : return( 0x39);
case IS_IND_IND : return( 0x30 | eaddr->reg);
case IS_IND_REG_DISPL : return( 0x28 | eaddr->reg);
case IS_GLOB_LBL : return( 0x39);
case IS_3_OPS : if ( isdigit( *(eaddr->expr)) &&
atoi( eaddr->expr) < 128)
return( 0x30 | eaddr->reg);
else
fprintf( stderr, "FOUT in IS_3_OPS\n");
break;
case IS_QUICK :
case IS_IMMEDIATE : return( 0x3c);
default : fprintf( stderr,
"mode_reg(), verkeerde operand %d\n",
eaddr->type);
abort();
break;
}
}
code_extension( eaddr)
struct t_operand *eaddr;
{
switch ( eaddr->type) {
case IS_IND_MEM : if ( eaddr->lbl == NULL)
@text4( %$( eaddr->expr));
else
@reloc4( %$( eaddr->lbl),
%$( eaddr->expr),
ABSOLUTE);
break;
case IS_IND_IND : if ( eaddr->expr2 == 0) {
@text2( 0x161);
@text2( %$(eaddr->expr));
}
else {
@text2( 0x162);
@text2( %$(eaddr->expr));
@text2( %d(eaddr->expr2));
}
break;
case IS_IND_REG_DISPL : @text2( %$( eaddr->expr));
break;
case IS_GLOB_LBL : @reloc4( %$(eaddr->lbl),
%$(eaddr->expr),
ABSOLUTE);
break;
case IS_3_OPS : if ( isdigit( *(eaddr->expr)) &&
atoi( eaddr->expr) < 128) {
@text2( %d( 0x0800 |
( eaddr->reg2 << 12) |
( two_log( eaddr->scale)<<9) |
atoi( eaddr->expr)));
}
else
fprintf( stderr, "FOUT in IS_3_OPS\n");
break;
case IS_QUICK :
case IS_IMMEDIATE : if ( eaddr->lbl != NULL)
@reloc4( %$(eaddr->lbl),
%$(eaddr->expr),
ABSOLUTE);
else
@text4( %$(eaddr->expr));
}
}
int reg_mode( eaddr)
struct t_operand *eaddr;
{
int mr;
mr = mode_reg( eaddr);
return( ((mr & 0x7) << 3) | ((mr & 0x38) >> 3));
}
code_opcode( opcode, field1, field2, eaddr)
int opcode, field1, field2;
struct t_operand *eaddr;
{
@text2( %d(((opcode & 0xf) << 12) | ((field1 & 0x7) << 9) |
((field2 & 0x7) << 6) | (mode_reg(eaddr) & 0x3f)));
}
code_instr( opcode, field1, field2, eaddr)
int opcode, field1, field2;
struct t_operand *eaddr;
{
code_opcode( opcode, field1, field2, eaddr);
code_extension( eaddr);
}
code_move( size, src, dst)
int size;
struct t_operand *src, *dst;
{
@text2( %d( ((size & 0x3) << 12) | ((reg_mode( dst) & 0x3f) << 6) |
(mode_reg( src) & 0x3f)));
code_extension( src);
code_extension( dst);
}
code_dist4( dst)
struct t_operand *dst;
{
@reloc4( %$(dst->lbl), %$(dst->expr) + 4, PC_REL);
}
int two_log( nr)
int nr;
{
int log;
for ( log = 0; nr >= 2; nr >>= 1)
log++;
return( log);
}

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#define ARITH_FMT "%ld"
#define INT_FMT "%d"
struct t_operand {
unsigned type;
char *expr, *lbl;
int val, reg, reg2, scale, expr2;
};
#define IS_QUICK 1
#define IS_IMMEDIATE 2
#define IS_A_REG 3
#define IS_D_REG 4
#define IS_REG_PAIR 5
#define IS_INCR 6
#define IS_DECR 7
#define IS_3_OPS 8
#define IS_IND_MEM 9
#define IS_IND_IND 10
#define IS_GLOB_LBL 11
#define IS_LOC_LBL 12
#define IS_IND_REG 13
#define IS_IND_REG_DISPL 14
#define QUICK( op) (op->type == IS_QUICK)
#define IMMEDIATE( op) (op->type == IS_IMMEDIATE)
#define A_REG( op) (op->type == IS_A_REG)
#define D_REG( op) (op->type == IS_D_REG)
#define REG_PAIR( op) (op->type == IS_REG_PAIR)
#define INCR( op) (op->type == IS_INCR)
#define REG( op) (op->type == IS_A_REG || op->type == IS_D_REG)
#define LOC_LBL( op) (op->type == IS_LOC_LBL)
#define GLOB_LBL( op) (op->type == IS_GLOB_LBL)

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add_l src:QUICK, dst ==> code_instr( 0x5, src->val, 0x2, dst).
... src:IMMEDIATE, dst:A_REG ==> @if ( small( %$(src->expr)))
@text2( 0x5088 | (%d(dst->reg) & 0x7) |
((%$(src->expr) & 0x7) << 9)).
@else
code_instr( 0xd, dst->reg, 0x7, src).
@fi.
... src:IMMEDIATE, dst ==> code_opcode( 0x0, 0x3, 0x2, dst);
code_extension( src);
code_extension( dst).
... src, dst:D_REG ==> code_instr( 0xd, dst->reg, 0x6, src).
... src, dst:A_REG ==> code_instr( 0xd, dst->reg, 0x7, src).
... src:D_REG, dst ==> code_instr( 0xd, src->reg, 0x6, dst).
and_l src:QUICK, dst ==> code_opcode( 0x0, 0x1, 0x2, dst);
code_extension( src);
code_extension( dst).
... src:IMMEDIATE, dst ==> code_opcode( 0x0, 0x1, 0x2, dst);
code_extension( src);
code_extension( dst).
... src:D_REG, dst ==> code_instr( 0xc, src->reg, 0x6, dst).
asl_l cnt:D_REG, dst:D_REG ==> @text2( %d( 0xe1a0 | (cnt->reg << 9) |
dst->reg)).
asr_l cnt:QUICK, dst:D_REG ==> @text2( %d( 0xe080 | (cnt->val << 9) |
dst->reg)).
... cnt:D_REG, dst:D_REG ==> @text2( %d( 0xe0a0 | (cnt->reg << 9) |
dst->reg)).
bcc dst:LOC_LBL ==> @text2( 0x6400 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x64ff);
code_dist4( dst).
bcs dst:LOC_LBL ==> @text2( 0x6500 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x65ff);
code_dist4( dst).
beq dst:LOC_LBL ==> @text2( 0x6700 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x67ff);
code_dist4( dst).
bge dst:LOC_LBL ==> @text2( 0x6c00 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x6cff);
code_dist4( dst).
bgt dst:LOC_LBL ==> @text2( 0x6e00 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x6eff);
code_dist4( dst).
ble dst:LOC_LBL ==> @text2( 0x6f00 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x6fff);
code_dist4( dst).
bls dst:LOC_LBL ==> @text2( 0x6300 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x63ff);
code_dist4( dst).
blt dst:LOC_LBL ==> @text2( 0x6d00 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x6dff);
code_dist4( dst).
bmi dst:LOC_LBL ==> @text2( 0x6b00 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x6bff);
code_dist4( dst).
bne dst:LOC_LBL ==> @text2( 0x6600 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x66ff);
code_dist4( dst).
bra dst:LOC_LBL ==> @text2( 0x6000 | %dist( dst->lbl)).
... dst:GLOB_LBL ==> @text2( 0x60ff);
code_dist4( dst).
bset nr:D_REG, dst ==> code_instr( 0x0, nr->reg, 0x7, dst).
btst nr:D_REG, dst ==> code_instr( 0x0, nr->reg, 0x4, dst).
bchg nr:D_REG, dst ==> code_instr( 0x0, nr->reg, 0x5, dst).
clr_l dst ==> code_instr( 0x4, 0x1, 0x2, dst).
cmp_l src:INCR, dst:INCR ==> @text2( 0xb188 | %d( src->reg << 9) |
%d( dst->reg)).
... src, dst:D_REG ==> code_instr( 0xb, dst->reg, 0x2, src).
cmp2_l src, reg:D_REG ==> code_opcode( 0x0, 0x2, 0x3, src);
@text2( (%d(reg->reg) & 0x7) << 12);
code_extension( src).
dbf reg:D_REG, dst:LOC_LBL ==> @text2( 0x51c8 | (%d(reg->reg) & 0x7));
@text2( %dist(dst->lbl) + 2).
divs_l src, dst:D_REG ==> code_opcode( 0x4, 0x6, 0x1, src);
@text2( 0x800 | (%d(dst->reg) & 0x7) |
((%d(dst->reg) & 0x7) << 12));
code_extension( src).
divsl_l src, dst:REG_PAIR ==> code_opcode( 0x4, 0x6, 0x1, src);
@text2( 0x800 | (%d(dst->reg) & 0x7) |
((%d(dst->reg2) & 0x7) << 12));
code_extension( src).
divu_l src, dst:D_REG ==> code_opcode( 0x4, 0x6, 0x1, src);
@text2( (%d(dst->reg) & 0x7) |
((%d(dst->reg) & 0x7) << 12));
code_extension( src).
divul_l src, dst:REG_PAIR ==> code_opcode( 0x4, 0x6, 0x1, src);
@text2( (%d(dst->reg) & 0x7) |
((%d(dst->reg2) & 0x7) << 12));
code_extension( src).
eor_l src:D_REG, dst ==> code_instr( 0xb, src->reg, 0x6, dst).
ext_w dst:D_REG ==> @text2( 0x4880 | (%d(dst->reg) & 0x7)).
ext_l dst:D_REG ==> @text2( 0x48c0 | (%d(dst->reg) & 0x7)).
extl_l dst:D_REG ==> @text2( 0x49c0 | (%d(dst->reg) & 0x7)).
jmp dst ==> code_instr( 0x4, 0x7, 0x3, dst).
jsr dst ==> code_instr( 0x4, 0x7, 0x2, dst).
lea src, dst:A_REG ==> code_instr( 0x4, dst->reg, 0x7, src).
link reg:A_REG, displ:IMMEDIATE ==> @text2( 0x4e50 | %d(reg->reg));
@text2( %$(displ->expr)).
lsr_l cnt:D_REG, dst:D_REG ==> @text2( 0xe0a8 | (%d(dst->reg) & 0x7) |
((%d(cnt->reg) & 0x7) << 9)).
move_b src, dst ==> code_move( 0x1, src, dst).
move_l src, dst:A_REG ==> code_instr( 0x2, dst->reg, 0x1, src).
... src, dst ==> code_move( 0x2, src, dst).
move_w src, dst ==> code_move( 0x3, src, dst).
muls_l src, dst:D_REG ==> code_opcode( 0x4, 0x6, 0x0, src);
@text2( 0x800 | (%d(dst->reg) & 0x7) |
((%d(dst->reg) & 0x7) << 12));
code_extension( src).
mulu_l src, dst:D_REG ==> code_opcode( 0x4, 0x6, 0x0, src);
@text2( (%d(dst->reg) & 0x7) |
((%d(dst->reg) & 0x7) << 12));
code_extension( src).
neg_l dst ==> code_instr( 0x4, 0x2, 0x2, dst).
not_l dst ==> code_instr( 0x4, 0x3, 0x2, dst).
or_l src:D_REG, dst ==> code_instr( 0x8, src->reg, 0x6, dst).
pea src ==> code_instr( 0x4, 0x4, 0x1, src).
rol_l cnt:D_REG, dst:D_REG ==> @text2( 0xe1b8 | (%d(dst->reg) & 0x7) |
((%d(cnt->reg) & 0x7) << 9)).
ror_l cnt:D_REG, dst:D_REG ==> @text2( 0xe0b8 | (%d(dst->reg) & 0x7) |
((%d(cnt->reg) & 0x7) << 9)).
rts ==> @text2( 0x4e75).
sne dst ==> code_instr( 0x5, 0x3, 0x3, dst).
sub_l src:IMMEDIATE, dst ==> code_opcode( 0x0, 0x2, 0x2, dst);
code_extension( src);
code_extension( dst).
... src:QUICK, dst ==> code_instr( 0x5, src->val, 0x6, dst).
... src:D_REG, dst ==> code_instr( 0x9, src->reg, 0x6, dst).
tst_l dst ==> code_instr( 0x4, 0x5, 0x2, dst).
unlk reg:A_REG ==> @text2( 0x4e58 | %d(reg->reg)).

8
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#include <system.h>
extern File *out_file;
close_back()
{
sys_close( out_file);
}

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#include <system.h>
File *out_file;
open_back( filename)
char *filename;
{
if ( filename == (char *) '\0')
return( 0);
else
return( sys_open( filename, OP_WRITE, &out_file));
}

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#include <out.h>
#include "mach.h"
#include "data.h"
#include "back.h"
#include "header.h"
static do_algn();
end_back()
{
do_algn();
do_local_relocation();
output();
}
static
do_algn()
{
while ( ( text - text_area) % EM_WSIZE != 0 )
text1( '\0');
while ( ( data - data_area) % EM_WSIZE != 0 )
con1( '\0');
}

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#include "mach.h"
#include <back.h>
#include <stdio.h>
#include <out.h>
arg_error( s, arg)
char *s;
int arg;
{
fprintf( stderr, "arg_error %s %d\n", s, arg);
}
/*
do_open( filename)
char *filename;
{
if ( filename == (char *)0 || !sys_open( filename, OP_WRITE, &codefile))
return( 0);
fprint( codefile, ".sect .text; .sect .rom; .sect .data; .sect .bss\n");
return( 1);
}
*/
#define OWNFLOAT /* compile on SUN, generate code for SUN FP ... */
con_float(str, argval)
char *str;
int argval;
{
#ifdef NOFLOAT
static int been_here;
if (argval != 4 && argval != 8)
arg_error("fcon", argval);
if (argval == 8)
gen4((FOUR_BYTES) 0);
gen4((FOUR_BYTES) 0);
if ( !been_here++)
{
fputs("Warning : dummy float-constant(s)\n", stderr);
}
#else
#define IEEEFLOAT
double f;
double atof();
int i;
int j;
double frexp();
#ifndef OWNFLOAT
int sign = 0;
int fraction[4] ;
#else OWNFLOAT
float fl;
char *p;
#endif OWNFLOAT
if (argval!= 4 && argval!= 8) {
arg_error("fcon", argval);
argval = 8;
}
f = atof(str);
if (f == 0) {
if (argval == 8) gen4((FOUR_BYTES) 0);
gen4((FOUR_BYTES) 0);
return;
}
#ifdef OWNFLOAT
if (argval == 4) {
/* careful: avoid overflow */
double ldexp();
f = frexp(f, &i);
fl = f;
fl = frexp(fl,&j);
if (i+j > 127) {
/* overflow situation */
gen1(f<0?0377:0177);
gen1(0377);
gen1(0377);
gen1(0377);
return;
}
if (i+j < -127) {
/* underflow situation */
gen1(f<0?0200:0);
gen1(0200);
gen1(0);
gen1(0);
return;
}
fl = ldexp(fl, i+j);
p = (char *) &fl;
}
else {
p = (char *) &f;
}
gen1(*p++&0377);
for (i = argval-1; i; i--) {
gen1(*p++&0377);
}
#else OWNFLOAT
f = frexp(f, &i);
if (f < 0) {
f = -f;
sign = 1;
}
while (f < 0.5) {
f += f;
i --;
}
f = 2*f - 1.0; /* hidden bit */
i--; /* exponent is one lower for SUN floating point! */
#ifdef IEEEFLOAT
if (argval == 4) {
#endif IEEEFLOAT
i = (i + 128) & 0377;
fraction[0] = (sign << 15) | (i << 7);
for (j = 6; j>= 0; j--) {
f *= 2;
if (f >= 1.0) {
f -= 1.0;
fraction[0] |= (1 << j);
}
}
#ifdef IEEEFLOAT
}
else {
i = (i + 1024) & 03777;
fraction[0] = (sign << 15) | (i << 4);
for (j = 3; j>= 0; j--) {
f *= 2;
if (f >= 1.0) {
fraction[0] |= (1 << j);
f -= 1.0;
}
}
}
#endif IEEEFLOAT
for (i = 1; i < argval / 2; i++) {
fraction[i] = 0;
for (j = 15; j>= 0; j--) {
f *= 2;
if (f >= 1.0) {
fraction[i] |= (1 << j);
f -= 1.0;
}
}
}
if (f >= 0.5) {
for (i = argval/2 - 1; i >= 0; i--) {
for (j = 0; j < 16; j++) {
if (fraction[i] & (1 << j)) {
fraction[i] &= ~(1 << j);
}
else {
fraction[i] |= (1 << j);
break;
}
}
if (j != 16) break;
}
}
for (i = 0; i < argval/2; i++) {
gen1((fraction[i]>>8)&0377);
gen1(fraction[i]&0377);
}
#endif OWNFLOAT
#endif
}
#define CODE_EXPANDER
#include <em.h>
#if EM_WSIZE == 1
#define conEM_WSIZE con1
#define romEM_WSIZE rom1
#define CAST_WSIZE ONE_BYTE
#endif
#if EM_WSIZE == 2
#define conEM_WSIZE con2
#define romEM_WSIZE rom2
#define CAST_WSIZE TWO_BYTES
#endif
#if EM_WSIZE == 4
#define conEM_WSIZE con4
#define romEM_WSIZE rom4
#define CAST_WSIZE FOUR_BYTES
#endif
#if EM_PSIZE == 1
#define relocEM_PSIZE reloc1
#endif
#if EM_PSIZE == 2
#define relocEM_PSIZE reloc2
#endif
#if EM_PSIZE == 4
#define relocEM_PSIZE reloc4
#endif

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#define BYTES_REVERSED
#define WORDS_REVERSED
#define ONE_BYTE int
#define TWO_BYTES int
#define FOUR_BYTES long
#define EM_WSIZE 4
#define EM_PSIZE 4
#define EM_BSIZE 8
#define BSS_INIT 0
#define NAME_FMT "_%s"
#define DNAM_FMT "_%s"
#define DLB_FMT "_%ld"
#define ILB_FMT "I%x_%lx"
#define HOL_FMT "hol%d"
#define ALIGN_FMT ".align\n"
#define BYTE_FMT ".data1 %ld\n"
#define WORD_FMT ".data2 %ld\n"
#define LONG_FMT ".data4 %ld\n"
#define BSS_FMT ".space %ld\n"
#define SEGTXT_FMT ".sect .text\n"
#define SEGDAT_FMT ".sect .data\n"
#define SEGBSS_FMT ".sect .bss\n"
#define SYMBOL_DEF_FMT "%s :\n"
#define GLOBAL_FMT ".extern %s\n"
#define LOCAL_FMT ""
#define RELOC1_FMT ".data1 %s + %ld\n"
#define RELOC2_FMT ".data2 %s + %ld\n"
#define RELOC4_FMT ".data4 %s + %ld\n"
#define small( x) ( 1 <= (x) && (x) <= 8)

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#include <system.h>
#include "mach.h"
#include "back.h"
/* The following functions are called from reloc1(), reloc2(), reloc4(),
* dump_label().
*/
align_word()
/* Do word allignment.
*/
{
switch ( cur_seg) {
case SEGTXT : return;
case SEGCON : if ( (data - data_area) % 2 != 0)
con1( '\0');
return;
case SEGROM : if ( (data - data_area) % 2 != 0)
rom1( '\0');
return;
case SEGBSS : if ( nbss % 2 != 0)
nbss++;
return;
default : fprint( STDERR, "align_word() : unknown seg\n");
return;
}
}
long cur_value()
/* Return the index of the first free entry.
*/
{
switch( cur_seg) {
case SEGTXT: return text - text_area;
case SEGCON: return data - data_area;
case SEGROM: return data - data_area;
case SEGBSS: return nbss;
default : fprint( STDERR, "cur_value() : unknown seg\n");
return -1L;
}
}

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#include <system.h>
#include <em.h>
#include <out.h>
#include "mach.h"
#include "back.h"
#include "data.h"
/* Unportable code. Written for SUN, meant to be run on a SUN.
*/
#ifndef sun
Read above comment ...
#endif
extern File *out_file;
#include <a.out.h>
#include <alloc.h>
struct exec u_header;
long ntext, ndata, nrelo, nchar, base_address();
int trsize=0, drsize=0;
output()
{
register int i;
struct relocation_info *u_reloc;
struct nlist *u_name;
/*
* first, convert relocation data structures. This also requires
* some re-ordering, as SUN .o format needs has text relocation
* structures in front of the data relocation structures, whereas in
* ACK they can be in any order.
*/
nrelo = relo - reloc_info;
u_reloc = (struct relocation_info *)
Malloc((unsigned)nrelo*sizeof(struct relocation_info));
for (i = 0; i < nrelo; i++) {
if ( ( reloc_info[i].or_sect-S_MIN) == SEGTXT) {
convert_reloc( &reloc_info[i], u_reloc++);
trsize++;
}
}
for (i = 0; i < nrelo; i++) {
if ( ( reloc_info[i].or_sect-S_MIN) != SEGTXT) {
convert_reloc( &reloc_info[i], u_reloc++);
drsize++;
}
}
u_reloc -= nrelo;
init_unixheader();
putbuf( (char *) &u_header, sizeof(struct exec));
putbuf( (char *) text_area, ntext);
putbuf( (char *) data_area, ndata);
putbuf((char *) u_reloc, sizeof(struct relocation_info)*nrelo);
free(u_reloc);
u_name = (struct nlist *)
Malloc((unsigned)nname * sizeof(struct nlist));
for (i = 0; i < nname ; i++) { /* The segment names can be omitted */
convert_name( &symbol_table[i], u_name++);
}
u_name -= nname;
putbuf((char *) u_name, sizeof(struct nlist)*nname);
free(u_name);
/* print( "size string_area %d\n", nchar); */
put_stringtablesize( nchar + 4);
putbuf((char *) string_area, nchar);
}
init_unixheader()
{
ntext = text - text_area;
ndata = data - data_area;
nchar = string - string_area;
u_header.a_magic = OMAGIC;
u_header.a_machtype = M_68020;
u_header.a_text = ntext;
u_header.a_data = ndata;
u_header.a_bss = nbss;
u_header.a_syms = nname * sizeof(struct nlist);
u_header.a_entry = 0;
u_header.a_trsize = trsize * sizeof(struct relocation_info);
u_header.a_drsize = drsize * sizeof(struct relocation_info);
/* print( "header %o %d %d %d %d %d %d %d\n",
u_header.a_magic, u_header.a_text, u_header.a_data,
u_header.a_bss, u_header.a_syms, u_header.a_entry,
u_header.a_trsize, u_header.a_drsize);
*/
}
convert_reloc( a_relo, u_relo)
struct outrelo *a_relo;
struct relocation_info *u_relo;
{
u_relo->r_address = a_relo->or_addr;
u_relo->r_symbolnum = a_relo->or_nami;
u_relo->r_pcrel = (a_relo->or_type & RELPC) >> 3;
u_relo->r_length = 2;
if ( symbol_table[ a_relo->or_nami].on_valu == -1 ||
(symbol_table[ a_relo->or_nami].on_type & S_COM))
u_relo->r_extern = 1;
else
u_relo->r_extern = 0;
if ( u_relo->r_extern == 0) {
switch ( (symbol_table[ a_relo->or_nami].on_type & S_TYP) - S_MIN) {
case SEGTXT : u_relo->r_symbolnum = N_TEXT;
break;
case SEGCON : u_relo->r_symbolnum = N_DATA;
break;
case SEGBSS : u_relo->r_symbolnum = N_BSS;
break;
default : fprint( STDERR,
"convert_relo(): bad segment %d\n",
(symbol_table[ a_relo->or_nami].on_type & S_TYP) - S_MIN);
}
}
}
/*
int convert_length( length)
int length;
{
if ( length & RELO1)
return( 0);
else if ( length & RELO2)
return( 1);
else if ( length & RELO4)
return( 2);
else
fprint( STDERR, "convert_length(): size is impossible %d\n",
length);
}
*/
#define n_mptr n_un.n_name
#define n_str n_un.n_strx
convert_name( a_name, u_name)
struct outname *a_name;
struct nlist *u_name;
{
/* print( "naam is %s\n", a_name->on_foff + string_area); */
u_name->n_str = a_name->on_foff + 4;
fill_type( &(u_name->n_type), &(a_name->on_type), a_name->on_valu);
u_name->n_other = '\0';
u_name->n_desc = 0;
if (a_name->on_type & S_COM)
u_name->n_value = a_name->on_valu;
else if ( a_name->on_valu != -1)
u_name->n_value = a_name->on_valu +
base_address( ( a_name->on_type & S_TYP) - S_MIN);
else
u_name->n_value = 0;
}
fill_type( u_type, a_type, valu)
unsigned char *u_type;
ushort *a_type;
long valu;
{
int sect;
*u_type = '\0';
*u_type |= ( *a_type & S_EXT) ? N_EXT : N_UNDF;
if ( valu != -1 && (! (*a_type & S_COM))) {
sect = ( *a_type & S_TYP ) - S_MIN;
switch ( sect) {
case SEGTXT: *u_type |= N_TEXT;
break;
case SEGCON : *u_type |= N_DATA;
break;
case SEGBSS : *u_type |= N_BSS;
break;
default: fprint(STDERR,
"fill_type() : bad section %d\n", sect);
}
}
}
long base_address( seg)
int seg;
{
switch ( seg) {
case SEGTXT : return( 0);
break;
case SEGCON : return( text - text_area);
break;
case SEGBSS : return( text - text_area + data - data_area);
break;
default : fprint( STDERR,
"base_adres() : bad section %d\n", seg);
}
}
put_stringtablesize( n)
long n;
{
putbuf( (char *)&n, 4L);
}
putbuf(buf,n)
char *buf;
long n;
{
sys_write( out_file, buf, n);
}

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#include <system.h>
#include <out.h>
#include "data.h"
#include "back.h"
long get4();
extern long base_address();
extern short get2();
extern char get1();
static do_relo();
do_local_relocation()
{
register struct outrelo *ptr;
register int s;
/* print( "n relocation records %d\n", relo - reloc_info); */
for ( ptr = reloc_info; ptr < relo; ptr++) {
s = ptr->or_nami;
if ( symbol_table[ s].on_valu != -1 &&
! (symbol_table[s].on_type & S_COM))
do_relo(&symbol_table[ s], ptr);
}
}
static
do_relo(np,rp)
struct outname *np;
struct outrelo *rp;
{
long oldval,newval;
char *sect;
switch( rp->or_sect - S_MIN) {
case SEGTXT:
sect = text_area;
break;
case SEGCON:
sect = data_area;
break;
default:
fprint( STDERR,
"do_local_relo(): bad section %d\n",
rp->or_sect - S_MIN);
break;
}
oldval = get4( sect, rp->or_addr);
newval = oldval + np->on_valu +
base_address( (np->on_type & S_TYP) -S_MIN);
if ( rp->or_type & RELO4)
put4( sect, rp->or_addr, newval);
/*
else if ( rp->or_type & RELO2)
put2( sect, rp->or_addr, (int) newval);
else if ( rp->or_type & RELO1)
put1( sect, rp->or_addr, (char) newval);
*/
else
print( STDERR, "do_relo() : bad relocation size\n");
/* print( "reloc %s adrr=%ld sect=%ld oldval=%ld newval=%ld def = %ld\n",
np->on_foff + string_area, rp->or_addr, rp->or_sect-S_MIN, oldval, newval,
np->on_valu);
*/
}