--- /dev/null
+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
--- /dev/null
+#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, #-$1".
--- /dev/null
+EMHOME=../../../..
+CEG=$(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.. $(SOURCE)/common.c
--- /dev/null
+EMHOME=../../..
+BACK=$(EMHOME)/lib/ceg/ce_back
+
+install : back.a
+ install_ceg
+
+clean:
+ rm -rf back.a back
+
+back.a :
+ -mkdir back
+ cp $(BACK)/obj_back/*h back
+ cp Make.back back/Makefile
+ ( cd back; make)
+ ar r back.a back/*o;
+ -ranlib back.a
--- /dev/null
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+#include "as.h"
+#include "arg_type.h"
+
+
+process_label() {}
+
+
+process_mnemonic( m)
+char *m;
+{
+ for ( ; *m != '\0'; m++)
+ if ( *m == '.')
+ *m = '_';
+}
+
+
+process_operand( str, op)
+char *str;
+struct t_operand *op;
+{
+ char *glob_lbl();
+
+ op->type = 0;
+
+ switch ( *str) {
+ case '#' : op->type = IS_IMMEDIATE;
+ op->expr = str+1;
+
+ if ( *(op->expr) != '$') { /* #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);
+}
--- /dev/null
+#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)
--- /dev/null
+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)).
--- /dev/null
+#include <system.h>
+
+extern File *out_file;
+
+close_back()
+{
+ sys_close( out_file);
+}
--- /dev/null
+#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));
+}
+
--- /dev/null
+#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');
+}
--- /dev/null
+#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
--- /dev/null
+#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)
--- /dev/null
+#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;
+ }
+}
+
--- /dev/null
+#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);
+}
--- /dev/null
+#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);
+ */
+}
public / ack.git / commitdiff