mirror of http://shamusworld.gotdns.org/git/rmac
2087 lines
36 KiB
C
2087 lines
36 KiB
C
//
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// RMAC - Reboot's Macro Assembler for all Atari computers
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// DIRECT.C - Directive Handling
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// Copyright (C) 199x Landon Dyer, 2011-2019 Reboot and Friends
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// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
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// Source utilised with the kind permission of Landon Dyer
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//
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#include "direct.h"
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#include "6502.h"
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#include "amode.h"
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#include "error.h"
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#include "expr.h"
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#include "fltpoint.h"
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#include "listing.h"
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#include "mach.h"
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#include "macro.h"
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#include "mark.h"
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#include "procln.h"
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#include "riscasm.h"
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#include "sect.h"
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#include "symbol.h"
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#include "token.h"
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#define DEF_KW
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#include "kwtab.h"
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TOKEN exprbuf[128]; // Expression buffer
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SYM * symbolPtr[1000000]; // Symbol pointers table
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static long unused; // For supressing 'write' warnings
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char buffer[256]; // Scratch buffer for messages
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int largestAlign[3] = { 2, 2, 2 }; // Largest alignment value seen per section
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// Function prototypes
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int d_unimpl(void);
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int d_68000(void);
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int d_68020(void);
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int d_68030(void);
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int d_68040(void);
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int d_68060(void);
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int d_68881(void);
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int d_68882(void);
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int d_56001(void);
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int d_nofpu(void);
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int d_bss(void);
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int d_data(void);
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int d_text(void);
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int d_abs(void);
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int d_comm(void);
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int d_dc(WORD);
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int d_ds(WORD);
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int d_dcb(WORD);
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int d_globl(void);
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int d_gpu(void);
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int d_dsp(void);
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int d_assert(void);
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int d_include(void);
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int d_list(void);
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int d_nlist(void);
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int d_error(char *);
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int d_warn(char *);
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int d_org(void);
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int d_init(WORD);
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int d_cargs(void);
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int d_undmac(void);
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int d_regbank0(void);
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int d_regbank1(void);
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int d_incbin(void);
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int d_noclear(void);
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int d_equrundef(void);
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int d_ccundef(void);
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int d_print(void);
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int d_gpumain(void);
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int d_jpad(void);
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int d_nojpad(void);
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int d_fail(void);
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int d_cstruct(void);
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int d_prgflags(void);
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int d_opt(void);
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int d_dsp(void);
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int d_objproc(void);
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void SetLargestAlignment(int);
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// Directive handler table
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int (*dirtab[])() = {
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d_org, // 0 org
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d_even, // 1 even
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d_6502, // 2 .6502
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d_68000, // 3 .68000
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d_bss, // 4 bss
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d_data, // 5 data
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d_text, // 6 text
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d_abs, // 7 abs
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d_comm, // 8 comm
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(void *)d_init, // 9 init
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d_cargs, // 10 cargs
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(void *)d_goto, // 11 goto
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(void *)d_dc, // 12 dc
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(void *)d_ds, // 13 ds
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d_undmac, // 14 undefmac
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d_gpu, // 15 .gpu
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d_dsp, // 16 .dsp
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(void *)d_dcb, // 17 dcb
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d_unimpl, // 18* set
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d_unimpl, // 19* reg
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d_unimpl, // 20 dump
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d_incbin, // 21 .incbin //load
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d_unimpl, // 22 disable
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d_unimpl, // 23 enable
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d_globl, // 24 globl
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d_regbank0, // 25 .regbank0
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d_regbank1, // 26 .regbank1
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d_unimpl, // 27 xdef
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d_assert, // 28 assert
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d_unimpl, // 29* if
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d_unimpl, // 30* endif
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d_unimpl, // 31* endc
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d_unimpl, // 32* iif
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d_include, // 33 include
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fpop, // 34 end
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d_unimpl, // 35* macro
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ExitMacro, // 36* exitm
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d_unimpl, // 37* endm
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d_list, // 38 list
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d_nlist, // 39 nlist
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d_long, // 40* rept
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d_phrase, // 41* endr
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d_dphrase, // 42 struct
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d_qphrase, // 43 ends
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d_title, // 44 title
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d_subttl, // 45 subttl
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eject, // 46 eject
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d_error, // 47 error
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d_warn, // 48 warn
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d_noclear, // 49 .noclear
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d_equrundef, // 50 .equrundef/.regundef
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d_ccundef, // 51 .ccundef
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d_print, // 52 .print
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d_cstruct, // 53 .cstruct
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d_jpad, // 54 .jpad (deprecated)
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d_nojpad, // 55 .nojpad (deprecated)
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d_gpumain, // 56 .gpumain (deprecated)
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d_prgflags, // 57 .prgflags
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d_68020, // 58 .68020
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d_68030, // 59 .68030
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d_68040, // 60 .68040
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d_68060, // 61 .68060
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d_68881, // 62 .68881
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d_68882, // 63 .68882
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d_56001, // 64 .56001
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d_nofpu, // 65 nofpu
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d_opt, // 66 .opt
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d_objproc, // 67 .objproc
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};
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//
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// Set the largest alignment seen in the current section
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//
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void SetLargestAlignment(int size)
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{
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if ((scattr & TEXT) && (largestAlign[0] < size))
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largestAlign[0] = size;
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else if ((scattr & DATA) && (largestAlign[1] < size))
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largestAlign[1] = size;
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else if ((scattr & BSS) && (largestAlign[2] < size))
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largestAlign[2] = size;
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}
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//
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// .error - Abort compilation, printing an error message
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//
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int d_error(char *str)
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{
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if (*tok == EOL)
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return error("error directive encountered - aborting assembling");
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else
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{
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switch(*tok)
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{
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case STRING:
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return error(string[tok[1]]);
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break;
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default:
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return error("error directive encountered--aborting assembly");
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}
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}
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}
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//
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// .warn - Just display a warning on screen
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//
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int d_warn(char *str)
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{
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if (*tok == EOL)
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return warn("WARNING WARNING WARNING");
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else
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{
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switch(*tok)
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{
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case STRING:
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return warn(string[tok[1]]);
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break;
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default:
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return warn("WARNING WARNING WARNING");
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}
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}
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}
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//
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// .org - Set origin
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//
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int d_org(void)
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{
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uint64_t address;
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if (!rgpu && !rdsp && !robjproc && !m6502 && !dsp56001)
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return error(".org permitted only in GPU/DSP/OP, 56001 and 6502 sections");
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// M56K can leave the expression off the org for some reason :-/
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if ((abs_expr(&address) == ERROR) && !dsp56001)
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{
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error("cannot determine org'd address");
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return ERROR;
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}
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if (rgpu | rdsp | robjproc)
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{
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orgaddr = address;
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orgactive = 1;
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}
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else if (m6502)
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{
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// 6502. We also kludge 'lsloc' so the listing generator doesn't try
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// to spew out megabytes.
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if (address > 0xFFFF)
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return error(range_error);
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if (sloc != currentorg[0])
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{
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currentorg[1] = sloc;
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currentorg += 2;
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}
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currentorg[0] = address;
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ch_size = 0;
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lsloc = sloc = address;
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chptr = scode->chptr + address;
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orgaddr = address;
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orgactive = 1;
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}
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else if (dsp56001)
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{
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}
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at_eol();
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return 0;
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}
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//
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// Print directive
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//
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int d_print(void)
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{
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char prntstr[LNSIZ]; // String for PRINT directive
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char format[LNSIZ]; // Format for PRINT directive
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int formatting = 0; // Formatting on/off
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int wordlong = 0; // WORD = 0, LONG = 1
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int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
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uint64_t eval; // Expression value
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WORD eattr; // Expression attributes
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SYM * esym; // External symbol involved in expr.
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TOKEN r_expr[EXPRSIZE];
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while (*tok != EOL)
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{
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switch (*tok)
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{
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case STRING:
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sprintf(prntstr, "%s", string[tok[1]]);
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printf("%s", prntstr);
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if (list_fd)
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unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
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tok += 2;
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break;
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case '/':
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formatting = 1;
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// "X" & "L" get tokenized now... :-/ Probably should look into preventing this kind of thing from happening (was added with DSP56K code)
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if ((tok[1] != SYMBOL) && (tok[1] != KW_L) && (tok[1] != KW_X))
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goto token_err;
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if (tok[1] == KW_L)
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{
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wordlong = 1;
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tok += 2;
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}
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else if (tok[1] == KW_X)
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{
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outtype = 0;
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tok += 2;
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}
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else
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{
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strcpy(prntstr, string[tok[2]]);
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switch (prntstr[0])
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{
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case 'l': case 'L': wordlong = 1; break;
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case 'w': case 'W': wordlong = 0; break;
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case 'x': case 'X': outtype = 0; break;
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case 'd': case 'D': outtype = 1; break;
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case 'u': case 'U': outtype = 2; break;
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default:
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error("unknown print format flag");
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return ERROR;
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}
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tok += 3;
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}
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break;
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case ',':
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tok++;
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break;
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default:
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if (expr(r_expr, &eval, &eattr, &esym) != OK)
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goto token_err;
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else
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{
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switch(outtype)
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{
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case 0: strcpy(format, "%X"); break;
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case 1: strcpy(format, "%d" ); break;
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case 2: strcpy(format, "%u" ); break;
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}
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if (wordlong)
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sprintf(prntstr, format, eval);
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else
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sprintf(prntstr, format, eval & 0xFFFF);
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printf("%s", prntstr);
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if (list_fd)
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unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
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formatting = 0;
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wordlong = 0;
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outtype = 0;
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}
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break;
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}
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}
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printf("\n");
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return 0;
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token_err:
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error("illegal print token [@ '%s']", prntstr);
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return ERROR;
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}
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//
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// Undefine an equated condition code
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//
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int d_ccundef(void)
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{
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SYM * ccname;
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// Check that we are in a RISC section
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if (!rgpu && !rdsp)
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{
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error(".ccundef must be defined in .gpu/.dsp section");
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return ERROR;
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}
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if (*tok != SYMBOL)
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{
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error("syntax error; expected symbol");
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return ERROR;
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}
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ccname = lookup(string[tok[1]], LABEL, 0);
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// Make sure symbol is a valid ccdef
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if (!ccname || !(ccname->sattre & EQUATEDCC))
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{
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error("invalid equated condition name specified");
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return ERROR;
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}
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ccname->sattre |= UNDEF_CC;
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return 0;
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}
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//
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// Undefine an equated register
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//
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int d_equrundef(void)
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{
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SYM * regname;
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// Check that we are in a RISC section
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if (!rgpu && !rdsp)
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return error(".equrundef/.regundef must be defined in .gpu/.dsp section");
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while (*tok != EOL)
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{
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// Skip preceeding or seperating commas (if any)
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if (*tok == ',')
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tok++;
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// Check we are dealing with a symbol
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if (*tok != SYMBOL)
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return error("syntax error; expected symbol");
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// Lookup and undef if equated register
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regname = lookup(string[tok[1]], LABEL, 0);
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if (regname && (regname->sattre & EQUATEDREG))
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{
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// Reset the attributes of this symbol...
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regname->sattr = 0;
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regname->sattre &= ~(EQUATEDREG | BANK_0 | BANK_1);
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regname->sattre |= UNDEF_EQUR;
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}
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// Skip over symbol token and address
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tok += 2;
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}
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return 0;
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}
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//
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// Do not allow use of the CLR.L opcode
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//
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int d_noclear(void)
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{
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warn("CLR.L opcode ignored...");
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return 0;
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}
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//
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// Include binary file
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//
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int d_incbin(void)
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{
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int fd;
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int bytes = 0;
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long pos, size, bytesRead;
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char buf1[256];
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int i;
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// Check to see if we're in BSS, and, if so, throw an error
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if (scattr & SBSS)
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{
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error("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
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return ERROR;
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}
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if (*tok != STRING)
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{
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error("syntax error; file to include missing");
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return ERROR;
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}
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// Attempt to open the include file in the current directory, then (if that
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// failed) try list of include files passed in the enviroment string or by
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// the "-d" option.
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if ((fd = open(string[tok[1]], _OPEN_INC)) < 0)
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{
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for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
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{
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fd = strlen(buf1);
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// Append path char if necessary
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if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
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strcat(buf1, SLASHSTRING);
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strcat(buf1, string[tok[1]]);
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if ((fd = open(buf1, _OPEN_INC)) >= 0)
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goto allright;
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}
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return error("cannot open: \"%s\"", string[tok[1]]);
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}
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allright:
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size = lseek(fd, 0L, SEEK_END);
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pos = lseek(fd, 0L, SEEK_SET);
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chcheck(size);
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DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size); }
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char * fileBuffer = (char *)malloc(size);
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bytesRead = read(fd, fileBuffer, size);
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if (bytesRead != size)
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{
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error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[tok[1]], size);
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return ERROR;
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}
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memcpy(chptr, fileBuffer, size);
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chptr += size;
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sloc += size;
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ch_size += size;
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if (orgactive)
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orgaddr += size;
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free(fileBuffer);
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close(fd);
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return 0;
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}
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//
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// Set RISC register banks
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//
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int d_regbank0(void)
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{
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// Set active register bank zero
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regbank = BANK_0;
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return 0;
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}
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int d_regbank1(void)
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{
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// Set active register bank one
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regbank = BANK_1;
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return 0;
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}
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//
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// Helper function, to cut down on mistakes & typing
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//
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static inline void SkipBytes(unsigned bytesToSkip)
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{
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if (!bytesToSkip)
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return;
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if ((scattr & SBSS) == 0)
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{
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chcheck(bytesToSkip);
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D_ZEROFILL(bytesToSkip);
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}
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else
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{
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sloc += bytesToSkip;
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if (orgactive)
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orgaddr += bytesToSkip;
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}
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}
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//
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// Adjust location to an EVEN value
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//
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int d_even(void)
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{
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if (m6502)
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return error(in_6502mode);
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|
|
unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
|
|
|
|
if (skip)
|
|
{
|
|
if ((scattr & SBSS) == 0)
|
|
{
|
|
chcheck(1);
|
|
D_byte(0);
|
|
}
|
|
else
|
|
{
|
|
sloc++;
|
|
|
|
if (orgactive)
|
|
orgaddr++;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Adjust location to a LONG value
|
|
//
|
|
int d_long(void)
|
|
{
|
|
unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
|
|
unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
|
|
SkipBytes(bytesToSkip);
|
|
SetLargestAlignment(4);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Adjust location to a PHRASE value
|
|
//
|
|
// N.B.: We have to handle the GPU/DSP cases separately because you can embed
|
|
// RISC code in the middle of a regular 68K section. Also note that all
|
|
// of the alignment pseudo-ops will have to be fixed this way.
|
|
//
|
|
// This *must* behave differently when in a RISC section, as following sloc
|
|
// (instead of orgaddr) will fuck things up royally. Note that we do it this
|
|
// way because you can embed RISC code in a 68K section, and have the origin
|
|
// pointing to a different alignment in the RISC section than the 68K section.
|
|
//
|
|
int d_phrase(void)
|
|
{
|
|
unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
|
|
unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
|
|
SkipBytes(bytesToSkip);
|
|
SetLargestAlignment(8);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Adjust location to a DPHRASE value
|
|
//
|
|
int d_dphrase(void)
|
|
{
|
|
unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
|
|
unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
|
|
SkipBytes(bytesToSkip);
|
|
SetLargestAlignment(16);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Adjust location to a QPHRASE value
|
|
//
|
|
int d_qphrase(void)
|
|
{
|
|
unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
|
|
unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
|
|
SkipBytes(bytesToSkip);
|
|
SetLargestAlignment(32);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Do auto-even. This must be called ONLY if 'sloc' is odd.
|
|
//
|
|
// This is made hairy because, if there was a label on the line, we also have
|
|
// to adjust its value. This won't work with more than one label on the line,
|
|
// which is OK since multiple labels are only allowed in AS68 kludge mode, and
|
|
// the C compiler is VERY paranoid and uses ".even" whenever it can
|
|
//
|
|
// N.B.: This probably needs the same fixes as above...
|
|
//
|
|
void auto_even(void)
|
|
{
|
|
if (cursect != M6502)
|
|
{
|
|
if (scattr & SBSS)
|
|
sloc++; // Bump BSS section
|
|
else
|
|
D_byte(0); // Deposit 0.b in non-BSS
|
|
|
|
if (lab_sym != NULL) // Bump label if we have to
|
|
lab_sym->svalue++;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Unimplemened directive error
|
|
//
|
|
int d_unimpl(void)
|
|
{
|
|
return error("unimplemented directive");
|
|
}
|
|
|
|
|
|
//
|
|
// Return absolute (not TDB) and defined expression or return an error
|
|
//
|
|
int abs_expr(uint64_t * a_eval)
|
|
{
|
|
WORD eattr;
|
|
|
|
if (expr(exprbuf, a_eval, &eattr, NULL) < 0)
|
|
return ERROR;
|
|
|
|
if (!(eattr & DEFINED))
|
|
return error(undef_error);
|
|
|
|
if (eattr & TDB)
|
|
return error(rel_error);
|
|
|
|
return OK;
|
|
}
|
|
|
|
|
|
//
|
|
// Hand symbols in a symbol-list to a function (kind of like mapcar...)
|
|
//
|
|
int symlist(int(* func)())
|
|
{
|
|
const char * em = "symbol list syntax";
|
|
|
|
for(;;)
|
|
{
|
|
if (*tok != SYMBOL)
|
|
return error(em);
|
|
|
|
if ((*func)(string[tok[1]]) != OK)
|
|
break;
|
|
|
|
tok += 2;
|
|
|
|
if (*tok == EOL)
|
|
break;
|
|
|
|
if (*tok != ',')
|
|
return error(em);
|
|
|
|
tok++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .include "filename"
|
|
//
|
|
int d_include(void)
|
|
{
|
|
int j;
|
|
int i;
|
|
char * fn;
|
|
char buf[128];
|
|
char buf1[128];
|
|
|
|
if (*tok == STRING) // Leave strings ALONE
|
|
fn = string[*++tok];
|
|
else if (*tok == SYMBOL) // Try to append ".s" to symbols
|
|
{
|
|
strcpy(buf, string[*++tok]);
|
|
fext(buf, ".s", 0);
|
|
fn = &buf[0];
|
|
}
|
|
else // Punt if no STRING or SYMBOL
|
|
return error("missing filename");
|
|
|
|
// Make sure the user didn't try anything like:
|
|
// .include equates.s
|
|
if (*++tok != EOL)
|
|
return error("extra stuff after filename--enclose it in quotes");
|
|
|
|
// Attempt to open the include file in the current directory, then (if that
|
|
// failed) try list of include files passed in the enviroment string or by
|
|
// the "-i" option.
|
|
if ((j = open(fn, 0)) < 0)
|
|
{
|
|
for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
|
|
{
|
|
j = strlen(buf1);
|
|
|
|
// Append path char if necessary
|
|
if (j > 0 && buf1[j - 1] != SLASHCHAR)
|
|
strcat(buf1, SLASHSTRING);
|
|
|
|
strcat(buf1, fn);
|
|
|
|
if ((j = open(buf1, 0)) >= 0)
|
|
goto allright;
|
|
}
|
|
|
|
return error("cannot open: \"%s\"", fn);
|
|
}
|
|
|
|
allright:
|
|
include(j, fn);
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .assert expression [, expression...]
|
|
//
|
|
int d_assert(void)
|
|
{
|
|
WORD eattr;
|
|
uint64_t eval;
|
|
|
|
for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
|
|
{
|
|
if (!(eattr & DEFINED))
|
|
return error("forward or undefined .assert");
|
|
|
|
if (!eval)
|
|
return error("assert failure");
|
|
|
|
if (*tok != ',')
|
|
break;
|
|
}
|
|
|
|
at_eol();
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .globl symbol [, symbol] <<<cannot make local symbols global>>>
|
|
//
|
|
int globl1(char * p)
|
|
{
|
|
SYM * sy;
|
|
|
|
if (*p == '.')
|
|
return error("cannot .globl local symbol");
|
|
|
|
if ((sy = lookup(p, LABEL, 0)) == NULL)
|
|
{
|
|
sy = NewSymbol(p, LABEL, 0);
|
|
sy->svalue = 0;
|
|
sy->sattr = GLOBAL;
|
|
//printf("glob1: Making global symbol: attr=%04X, eattr=%08X, %s\n", sy->sattr, sy->sattre, sy->sname);
|
|
}
|
|
else
|
|
sy->sattr |= GLOBAL;
|
|
|
|
return OK;
|
|
}
|
|
|
|
|
|
int d_globl(void)
|
|
{
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
symlist(globl1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .prgflags expression
|
|
//
|
|
int d_prgflags(void)
|
|
{
|
|
uint64_t eval;
|
|
|
|
if (*tok == EOL)
|
|
return error("PRGFLAGS requires value");
|
|
else if (abs_expr(&eval) == OK)
|
|
{
|
|
PRGFLAGS = (uint32_t)eval;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return error("PRGFLAGS requires value");
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// .abs [expression]
|
|
//
|
|
int d_abs(void)
|
|
{
|
|
uint64_t eval;
|
|
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
SaveSection();
|
|
|
|
if (*tok == EOL)
|
|
eval = 0;
|
|
else if (abs_expr(&eval) != OK)
|
|
return 0;
|
|
|
|
SwitchSection(ABS);
|
|
sloc = (uint32_t)eval;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Switch segments
|
|
//
|
|
int d_text(void)
|
|
{
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
else if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (cursect != TEXT)
|
|
{
|
|
SaveSection();
|
|
SwitchSection(TEXT);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int d_data(void)
|
|
{
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
else if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (cursect != DATA)
|
|
{
|
|
SaveSection();
|
|
SwitchSection(DATA);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int d_bss(void)
|
|
{
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
else if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (cursect != BSS)
|
|
{
|
|
SaveSection();
|
|
SwitchSection(BSS);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .ds[.size] expression
|
|
//
|
|
int d_ds(WORD siz)
|
|
{
|
|
DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
|
|
|
|
uint64_t eval;
|
|
|
|
if ((cursect & (M6502 | M56KPXYL)) == 0)
|
|
{
|
|
if ((siz != SIZB) && (sloc & 1)) // Automatic .even
|
|
auto_even();
|
|
}
|
|
|
|
if (abs_expr(&eval) != OK)
|
|
return 0;
|
|
|
|
// Check to see if the value being passed in is negative (who the hell does
|
|
// that?--nobody does; it's the code gremlins, or rum, that does it)
|
|
// N.B.: Since 'eval' is of type uint32_t, if it goes negative, it will have
|
|
// its high bit set.
|
|
if (eval & 0x80000000)
|
|
return error("negative sizes not allowed");
|
|
|
|
// In non-TDB section (BSS, ABS and M6502) just advance the location
|
|
// counter appropriately. In TDB sections, deposit (possibly large) chunks
|
|
// of zeroed memory....
|
|
if ((scattr & SBSS) || cursect == M6502)
|
|
{
|
|
listvalue((uint32_t)eval);
|
|
eval *= siz;
|
|
sloc += (uint32_t)eval;
|
|
|
|
if (cursect == M6502)
|
|
chptr += eval;
|
|
|
|
just_bss = 1; // No data deposited (8-bit CPU mode)
|
|
}
|
|
else
|
|
{
|
|
dep_block(eval, siz, 0, (WORD)(DEFINED | ABS), NULL);
|
|
}
|
|
|
|
at_eol();
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d
|
|
//
|
|
int d_dc(WORD siz)
|
|
{
|
|
WORD eattr;
|
|
uint64_t eval;
|
|
uint8_t * p;
|
|
|
|
if ((scattr & SBSS) != 0)
|
|
return error("illegal initialization of section");
|
|
|
|
// Do an auto_even if it's not BYTE sized (hmm, should we be doing this???)
|
|
if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
|
|
auto_even();
|
|
|
|
// Check to see if we're trying to set LONGS on a non 32-bit aligned
|
|
// address in a GPU or DSP section, in their local RAM
|
|
if ((siz == SIZL) && (orgaddr & 0x03)
|
|
&& ((rgpu && (orgaddr >= 0xF03000) && (orgaddr <= 0xF03FFFF))
|
|
|| (rdsp && (orgaddr >= 0xF1B000) && (orgaddr <= 0xF1CFFFF))))
|
|
warn("depositing LONGs on a non-long address in local RAM");
|
|
|
|
for(;; tok++)
|
|
{
|
|
// dc.b 'string' [,] ...
|
|
if (siz == SIZB && (*tok == STRING || *tok == STRINGA8) && (tok[2] == ',' || tok[2] == EOL))
|
|
{
|
|
uint32_t i = strlen(string[tok[1]]);
|
|
|
|
if ((challoc - ch_size) < i)
|
|
chcheck(i);
|
|
|
|
if (*tok == STRING)
|
|
{
|
|
for(p=string[tok[1]]; *p!=EOS; p++)
|
|
D_byte(*p);
|
|
}
|
|
else if (*tok == STRINGA8)
|
|
{
|
|
for(p=string[tok[1]]; *p!=EOS; p++)
|
|
D_byte(strtoa8[*p]);
|
|
}
|
|
else
|
|
{
|
|
error("String format not supported... yet");
|
|
}
|
|
|
|
tok += 2;
|
|
goto comma;
|
|
}
|
|
|
|
int movei = 0; // MOVEI flag for dc.i
|
|
|
|
if (*tok == DOTI)
|
|
{
|
|
movei = 1;
|
|
tok++;
|
|
siz = SIZL;
|
|
}
|
|
|
|
// dc.x <expression>
|
|
SYM * esym = 0;
|
|
|
|
if (expr(exprbuf, &eval, &eattr, &esym) != OK)
|
|
return 0;
|
|
|
|
uint16_t tdb = eattr & TDB;
|
|
uint16_t defined = eattr & DEFINED;
|
|
|
|
switch (siz)
|
|
{
|
|
case SIZB:
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
|
|
D_byte(0);
|
|
}
|
|
else
|
|
{
|
|
if (tdb)
|
|
return error("non-absolute byte value");
|
|
|
|
if (eval + 0x100 >= 0x200)
|
|
return error("%s (value = $%X)", range_error, eval);
|
|
|
|
D_byte(eval);
|
|
}
|
|
|
|
break;
|
|
case SIZW:
|
|
case SIZN:
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
|
|
D_word(0);
|
|
}
|
|
else
|
|
{
|
|
if (eval + 0x10000 >= 0x20000)
|
|
return error(range_error);
|
|
|
|
if (tdb)
|
|
MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
|
|
|
|
// Deposit 68000 or 6502 (byte-reversed) word
|
|
if (cursect != M6502)
|
|
D_word(eval)
|
|
else
|
|
D_rword(eval)
|
|
}
|
|
|
|
break;
|
|
case SIZL:
|
|
// Shamus: Why can't we do longs in 6502 mode?
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (!defined)
|
|
{
|
|
if (movei)
|
|
AddFixup(FU_LONG | FU_MOVEI, sloc, exprbuf);
|
|
else
|
|
AddFixup(FU_LONG, sloc, exprbuf);
|
|
|
|
D_long(0);
|
|
}
|
|
else
|
|
{
|
|
if (tdb)
|
|
MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
|
|
|
|
if (movei)
|
|
eval = WORDSWAP32(eval);
|
|
|
|
D_long(eval);
|
|
}
|
|
|
|
break;
|
|
case SIZQ:
|
|
// 64-bit size
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
// Shamus: We only handle DC.Q type stuff, will have to add fixups
|
|
// and stuff later (maybe... might not be needed...)
|
|
// DEFINITELY NEED FIXUPS HERE!
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_QUAD, sloc, exprbuf);
|
|
D_quad(0LL);
|
|
}
|
|
else
|
|
{
|
|
D_quad(eval);
|
|
}
|
|
|
|
break;
|
|
case SIZS:
|
|
// 32-bit float size
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_FLOATSING, sloc, exprbuf);
|
|
D_long(0);
|
|
}
|
|
else
|
|
{
|
|
//Would this *ever* happen?
|
|
// if (tdb)
|
|
// MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
|
|
|
|
PTR ptr;
|
|
ptr.u64 = &eval;
|
|
uint32_t ieee754 = FloatToIEEE754((float)*ptr.dp);
|
|
D_long(ieee754);
|
|
}
|
|
|
|
break;
|
|
case SIZD:
|
|
// 64-bit double size
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_FLOATDOUB, sloc, exprbuf);
|
|
D_quad(0LL);
|
|
}
|
|
else
|
|
{
|
|
//Would this *ever* happen?
|
|
// if (tdb)
|
|
// MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
|
|
|
|
PTR ptr;
|
|
ptr.u64 = &eval;
|
|
uint64_t ieee754 = DoubleToIEEE754(*ptr.dp);
|
|
D_quad(ieee754);
|
|
}
|
|
|
|
break;
|
|
case SIZX:
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
uint8_t extDbl[12];
|
|
memset(extDbl, 0, 12);
|
|
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_FLOATEXT, sloc, exprbuf);
|
|
D_extend(extDbl);
|
|
}
|
|
else
|
|
{
|
|
//Would this *ever* happen?
|
|
// if (tdb)
|
|
// MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
|
|
|
|
PTR ptr;
|
|
ptr.u64 = &eval;
|
|
DoubleToExtended(*ptr.dp, extDbl);
|
|
D_extend(extDbl);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
comma:
|
|
if (*tok != ',')
|
|
break;
|
|
}
|
|
|
|
at_eol();
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2'
|
|
//
|
|
int d_dcb(WORD siz)
|
|
{
|
|
uint64_t evalc, eval;
|
|
WORD eattr;
|
|
|
|
DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
|
|
|
|
if ((scattr & SBSS) != 0)
|
|
return error("illegal initialization of section");
|
|
|
|
if (abs_expr(&evalc) != OK)
|
|
return 0;
|
|
|
|
if (*tok++ != ',')
|
|
return error("missing comma");
|
|
|
|
if (expr(exprbuf, &eval, &eattr, NULL) < 0)
|
|
return 0;
|
|
|
|
if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
|
|
auto_even();
|
|
|
|
dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Generalized initialization directive
|
|
//
|
|
// .init[.siz] [#count,] expression [.size] , ...
|
|
//
|
|
// The size suffix on the ".init" directive becomes the default size of the
|
|
// objects to deposit. If an item is preceeded with a sharp (immediate) sign
|
|
// and an expression, it specifies a repeat count. The value to be deposited
|
|
// may be followed by a size suffix, which overrides the default size.
|
|
//
|
|
int d_init(WORD def_siz)
|
|
{
|
|
uint64_t count;
|
|
uint64_t eval;
|
|
WORD eattr;
|
|
WORD siz;
|
|
|
|
if ((scattr & SBSS) != 0)
|
|
return error(".init not permitted in BSS or ABS");
|
|
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
|
|
for(;;)
|
|
{
|
|
// Get repeat count (defaults to 1)
|
|
if (*tok == '#')
|
|
{
|
|
tok++;
|
|
|
|
if (abs_expr(&count) != OK)
|
|
return 0;
|
|
|
|
if (*tok++ != ',')
|
|
return error(comma_error);
|
|
}
|
|
else
|
|
count = 1;
|
|
|
|
// Evaluate expression to deposit
|
|
if (expr(exprbuf, &eval, &eattr, NULL) < 0)
|
|
return 0;
|
|
|
|
switch (*tok++)
|
|
{ // Determine size of object to deposit
|
|
case DOTB: siz = SIZB; break;
|
|
case DOTW: siz = SIZB; break;
|
|
case DOTL: siz = SIZL; break;
|
|
default:
|
|
siz = def_siz;
|
|
tok--;
|
|
break;
|
|
}
|
|
|
|
dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
|
|
|
|
switch (*tok)
|
|
{
|
|
case EOL:
|
|
return 0;
|
|
case ',':
|
|
tok++;
|
|
continue;
|
|
default:
|
|
return error(comma_error);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Deposit 'count' values of size 'siz' in the current (non-BSS) segment
|
|
//
|
|
int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
|
|
{
|
|
WORD tdb;
|
|
WORD defined;
|
|
|
|
tdb = (WORD)(eattr & TDB);
|
|
defined = (WORD)(eattr & DEFINED);
|
|
|
|
while (count--)
|
|
{
|
|
if ((challoc - ch_size) < 4)
|
|
chcheck(4L);
|
|
|
|
switch(siz)
|
|
{
|
|
case SIZB:
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
|
|
D_byte(0);
|
|
}
|
|
else
|
|
{
|
|
if (tdb)
|
|
return error("non-absolute byte value");
|
|
|
|
if (eval + 0x100 >= 0x200)
|
|
return error(range_error);
|
|
|
|
D_byte(eval);
|
|
}
|
|
|
|
break;
|
|
case SIZW:
|
|
case SIZN:
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
|
|
D_word(0);
|
|
}
|
|
else
|
|
{
|
|
if (tdb)
|
|
MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
|
|
|
|
if (eval + 0x10000 >= 0x20000)
|
|
return error(range_error);
|
|
|
|
// Deposit 68000 or 6502 (byte-reversed) word
|
|
if (cursect != M6502)
|
|
D_word(eval)
|
|
else
|
|
D_rword(eval)
|
|
|
|
}
|
|
|
|
break;
|
|
case SIZL:
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (!defined)
|
|
{
|
|
AddFixup(FU_LONG, sloc, exprbuf);
|
|
D_long(0);
|
|
}
|
|
else
|
|
{
|
|
if (tdb)
|
|
MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
|
|
|
|
D_long(eval);
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .comm symbol, size
|
|
//
|
|
int d_comm(void)
|
|
{
|
|
SYM * sym;
|
|
char * p;
|
|
uint64_t eval;
|
|
|
|
if (m6502)
|
|
return error(in_6502mode);
|
|
|
|
if (*tok != SYMBOL)
|
|
return error("missing symbol");
|
|
|
|
p = string[tok[1]];
|
|
tok += 2;
|
|
|
|
if (*p == '.') // Cannot .comm a local symbol
|
|
return error(locgl_error);
|
|
|
|
if ((sym = lookup(p, LABEL, 0)) == NULL)
|
|
sym = NewSymbol(p, LABEL, 0);
|
|
else
|
|
{
|
|
if (sym->sattr & DEFINED)
|
|
return error(".comm symbol already defined");
|
|
}
|
|
|
|
sym->sattr = GLOBAL | COMMON | BSS;
|
|
|
|
if (*tok++ != ',')
|
|
return error(comma_error);
|
|
|
|
if (abs_expr(&eval) != OK) // Parse size of common region
|
|
return 0;
|
|
|
|
sym->svalue = eval; // Install common symbol's size
|
|
at_eol();
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .list - Turn listing on
|
|
//
|
|
int d_list(void)
|
|
{
|
|
if (list_flag)
|
|
listing++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .nlist - Turn listing off
|
|
//
|
|
int d_nlist(void)
|
|
{
|
|
if (list_flag)
|
|
listing--;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68000 - Back to 68000 TEXT segment
|
|
//
|
|
int d_68000(void)
|
|
{
|
|
rgpu = rdsp = robjproc = dsp56001 = 0;
|
|
// Switching from gpu/dsp sections should reset any ORG'd Address
|
|
orgactive = 0;
|
|
orgwarning = 0;
|
|
SaveSection();
|
|
SwitchSection(TEXT);
|
|
activecpu = CPU_68000;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68020 - Back to 68000 TEXT segment and select 68020
|
|
//
|
|
int d_68020(void)
|
|
{
|
|
d_68000();
|
|
activecpu = CPU_68020;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68030 - Back to 68000 TEXT segment and select 68030
|
|
//
|
|
int d_68030(void)
|
|
{
|
|
d_68000();
|
|
activecpu = CPU_68030;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68040 - Back to 68000 TEXT segment and select 68040
|
|
//
|
|
int d_68040(void)
|
|
{
|
|
d_68000();
|
|
activecpu = CPU_68040;
|
|
activefpu = FPU_68040;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68060 - Back to 68000 TEXT segment and select 68060
|
|
//
|
|
int d_68060(void)
|
|
{
|
|
d_68000();
|
|
activecpu = CPU_68060;
|
|
activefpu = FPU_68060;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68881 - Back to 680x0 TEXT segment and select 68881 FPU
|
|
//
|
|
int d_68881(void)
|
|
{
|
|
//d_68000();
|
|
activefpu = FPU_68881;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .68882 - Back to 680x0 TEXT segment and select 68882 FPU
|
|
//
|
|
int d_68882(void)
|
|
{
|
|
//d_68000();
|
|
activefpu = FPU_68882;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// nofpu - Deselect FPUs.
|
|
//
|
|
int d_nofpu(void)
|
|
{
|
|
activefpu = FPU_NONE;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .56001 - Switch to DSP56001 assembler
|
|
//
|
|
int d_56001(void)
|
|
{
|
|
dsp56001 = 1;
|
|
rgpu = rdsp = robjproc = 0;
|
|
SaveSection();
|
|
|
|
if (obj_format == LOD || obj_format == P56)
|
|
SwitchSection(M56001P);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .gpu - Switch to GPU assembler
|
|
//
|
|
int d_gpu(void)
|
|
{
|
|
if ((cursect != TEXT) && (cursect != DATA))
|
|
{
|
|
error(".gpu can only be used in the TEXT or DATA segments");
|
|
return ERROR;
|
|
}
|
|
|
|
// If previous section was DSP or 68000 then we need to reset ORG'd Addresses
|
|
if (!rgpu)
|
|
{
|
|
orgactive = 0;
|
|
orgwarning = 0;
|
|
}
|
|
|
|
rgpu = 1; // Set GPU assembly
|
|
rdsp = 0; // Unset DSP assembly
|
|
robjproc = 0; // Unset OP assembly
|
|
dsp56001 = 0; // Unset 56001 assembly
|
|
regbank = BANK_N; // Set no default register bank
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .dsp - Switch to DSP assembler
|
|
//
|
|
int d_dsp(void)
|
|
{
|
|
if ((cursect != TEXT) && (cursect != DATA))
|
|
{
|
|
error(".dsp can only be used in the TEXT or DATA segments");
|
|
return ERROR;
|
|
}
|
|
|
|
// If previous section was gpu or 68000 then we need to reset ORG'd Addresses
|
|
if (!rdsp)
|
|
{
|
|
orgactive = 0;
|
|
orgwarning = 0;
|
|
}
|
|
|
|
rdsp = 1; // Set DSP assembly
|
|
rgpu = 0; // Unset GPU assembly
|
|
robjproc = 0; // Unset OP assembly
|
|
dsp56001 = 0; // Unset 56001 assembly
|
|
regbank = BANK_N; // Set no default register bank
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .cargs [#offset], symbol[.size], ...
|
|
//
|
|
// Lists of registers may also be mentioned; they just take up space. Good for
|
|
// "documentation" purposes:
|
|
//
|
|
// .cargs a6, .arg1, .arg2, .arg3...
|
|
//
|
|
// Symbols thus created are ABS and EQUATED.
|
|
//
|
|
int d_cargs(void)
|
|
{
|
|
uint64_t eval = 4; // Default to 4 if no offset specified (to account for
|
|
// return address)
|
|
WORD rlist;
|
|
SYM * symbol;
|
|
char * p;
|
|
int env;
|
|
int i;
|
|
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
|
|
if (*tok == '#')
|
|
{
|
|
tok++;
|
|
|
|
if (abs_expr(&eval) != OK)
|
|
return 0;
|
|
|
|
// Eat the comma, if it's there
|
|
if (*tok == ',')
|
|
tok++;
|
|
}
|
|
|
|
for(;;)
|
|
{
|
|
if (*tok == SYMBOL)
|
|
{
|
|
p = string[tok[1]];
|
|
|
|
// Set env to either local (dot prefixed) or global scope
|
|
env = (*p == '.' ? curenv : 0);
|
|
symbol = lookup(p, LABEL, env);
|
|
|
|
if (symbol == NULL)
|
|
{
|
|
symbol = NewSymbol(p, LABEL, env);
|
|
symbol->sattr = 0;
|
|
}
|
|
else if (symbol->sattr & DEFINED)
|
|
return error("multiply-defined label '%s'", p);
|
|
|
|
// Put symbol in "order of definition" list
|
|
AddToSymbolDeclarationList(symbol);
|
|
|
|
symbol->sattr |= (ABS | DEFINED | EQUATED);
|
|
symbol->svalue = eval;
|
|
tok += 2;
|
|
|
|
// What this does is eat any dot suffixes attached to a symbol. If
|
|
// it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
|
|
// there is no dot suffix, it assumes a size of 2.
|
|
switch ((int)*tok)
|
|
{
|
|
case DOTL:
|
|
eval += 2;
|
|
case DOTB:
|
|
case DOTW:
|
|
tok++;
|
|
}
|
|
|
|
eval += 2;
|
|
}
|
|
else if (*tok >= KW_D0 && *tok <= KW_A7)
|
|
{
|
|
if (reglist(&rlist) < 0)
|
|
return 0;
|
|
|
|
for(i=0; i<16; i++, rlist>>=1)
|
|
{
|
|
if (rlist & 1)
|
|
eval += 4;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch ((int)*tok)
|
|
{
|
|
case KW_USP:
|
|
case KW_SSP:
|
|
case KW_PC:
|
|
eval += 2;
|
|
// FALLTHROUGH
|
|
case KW_SR:
|
|
case KW_CCR:
|
|
eval += 2;
|
|
tok++;
|
|
break;
|
|
case EOL:
|
|
return 0;
|
|
default:
|
|
return error(".cargs syntax");
|
|
}
|
|
}
|
|
|
|
// Eat commas in between each argument, if they exist
|
|
if (*tok == ',')
|
|
tok++;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// .cstruct [#offset], symbol[.size], ...
|
|
//
|
|
// Lists of registers may also be mentioned; they just take up space. Good for
|
|
// "documentation" purposes:
|
|
//
|
|
// .cstruct a6, .arg1, .arg2, .arg3...
|
|
//
|
|
// Symbols thus created are ABS and EQUATED. Note that this is for
|
|
// compatibility with VBCC and the Remover's library. Thanks to GroovyBee for
|
|
// the suggestion.
|
|
//
|
|
int d_cstruct(void)
|
|
{
|
|
uint64_t eval = 0; // Default, if no offset specified, is zero
|
|
WORD rlist;
|
|
SYM * symbol;
|
|
char * symbolName;
|
|
int env;
|
|
int i;
|
|
|
|
if (rgpu || rdsp)
|
|
return error("directive forbidden in gpu/dsp mode");
|
|
|
|
if (*tok == '#')
|
|
{
|
|
tok++;
|
|
|
|
if (abs_expr(&eval) != OK)
|
|
return 0;
|
|
|
|
// Eat the comma, if it's there
|
|
if (*tok == ',')
|
|
tok++;
|
|
}
|
|
|
|
for(;;)
|
|
{
|
|
if (*tok == SYMBOL)
|
|
{
|
|
symbolName = string[tok[1]];
|
|
|
|
// Set env to either local (dot prefixed) or global scope
|
|
env = (symbolName[0] == '.' ? curenv : 0);
|
|
symbol = lookup(symbolName, LABEL, env);
|
|
|
|
// If the symbol wasn't found, then define it. Otherwise, throw an
|
|
// error.
|
|
if (symbol == NULL)
|
|
{
|
|
symbol = NewSymbol(symbolName, LABEL, env);
|
|
symbol->sattr = 0;
|
|
}
|
|
else if (symbol->sattr & DEFINED)
|
|
return error("multiply-defined label '%s'", symbolName);
|
|
|
|
// Put symbol in "order of definition" list
|
|
AddToSymbolDeclarationList(symbol);
|
|
|
|
tok += 2;
|
|
|
|
// Adjust label start address if it's a word or a long, as a byte
|
|
// label might have left us on an odd address.
|
|
switch ((int)*tok)
|
|
{
|
|
case DOTW:
|
|
case DOTL:
|
|
eval += eval & 0x01;
|
|
}
|
|
|
|
symbol->sattr |= (ABS | DEFINED | EQUATED);
|
|
symbol->svalue = eval;
|
|
|
|
// Check for dot suffixes and adjust space accordingly (longs and
|
|
// words on an odd boundary get bumped to the next word aligned
|
|
// address). If no suffix, then throw an error.
|
|
switch ((int)*tok)
|
|
{
|
|
case DOTL:
|
|
eval += 4;
|
|
break;
|
|
case DOTW:
|
|
eval += 2;
|
|
break;
|
|
case DOTB:
|
|
eval += 1;
|
|
break;
|
|
default:
|
|
return error("Symbol missing dot suffix in .cstruct construct");
|
|
}
|
|
|
|
tok++;
|
|
}
|
|
else if (*tok >= KW_D0 && *tok <= KW_A7)
|
|
{
|
|
if (reglist(&rlist) < 0)
|
|
return 0;
|
|
|
|
for(i=0; i<16; i++, rlist>>=1)
|
|
{
|
|
if (rlist & 1)
|
|
eval += 4;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch ((int)*tok)
|
|
{
|
|
case KW_USP:
|
|
case KW_SSP:
|
|
case KW_PC:
|
|
eval += 2;
|
|
// FALLTHROUGH
|
|
case KW_SR:
|
|
case KW_CCR:
|
|
eval += 2;
|
|
tok++;
|
|
break;
|
|
case EOL:
|
|
return 0;
|
|
default:
|
|
return error(".cstruct syntax");
|
|
}
|
|
}
|
|
|
|
// Eat commas in between each argument, if they exist
|
|
if (*tok == ',')
|
|
tok++;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Define start of OP object list (allows the use of ORG)
|
|
//
|
|
int d_objproc(void)
|
|
{
|
|
if ((cursect != TEXT) && (cursect != DATA))
|
|
{
|
|
error(".objproc can only be used in the TEXT or DATA segments");
|
|
return ERROR;
|
|
}
|
|
|
|
// If previous section was DSP or 68000 then we need to reset ORG'd
|
|
// Addresses
|
|
if (!robjproc)
|
|
{
|
|
orgactive = 0;
|
|
orgwarning = 0;
|
|
}
|
|
|
|
robjproc = 1; // Set OP assembly
|
|
rgpu = 0; // Unset GPU assembly
|
|
rdsp = 0; // Unset DSP assembly
|
|
dsp56001 = 0; // Unset 56001 assembly
|
|
return OK;
|
|
}
|
|
|
|
|
|
//
|
|
// Undefine a macro - .undefmac macname [, macname...]
|
|
//
|
|
int undmac1(char * p)
|
|
{
|
|
SYM * symbol = lookup(p, MACRO, 0);
|
|
|
|
// If the macro symbol exists, cause it to disappear
|
|
if (symbol != NULL)
|
|
symbol->stype = (BYTE)SY_UNDEF;
|
|
|
|
return OK;
|
|
}
|
|
|
|
|
|
int d_undmac(void)
|
|
{
|
|
symlist(undmac1);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int d_jpad(void)
|
|
{
|
|
warn("JPAD directive is deprecated/non-functional");
|
|
return OK;
|
|
}
|
|
|
|
|
|
int d_nojpad(void)
|
|
{
|
|
warn("NOJPAD directive is deprecated/non-functional");
|
|
return OK;
|
|
}
|
|
|
|
|
|
int d_gpumain(void)
|
|
{
|
|
return error("What the hell? Do you think we adhere to the Goof standard?");
|
|
}
|
|
|
|
|
|
//
|
|
// .opt - turn a specific (or all) optimisation on or off
|
|
//
|
|
int d_opt(void)
|
|
{
|
|
while (*tok != EOL)
|
|
{
|
|
if (*tok == STRING)
|
|
{
|
|
tok++;
|
|
char * tmpstr = string[*tok++];
|
|
|
|
if (ParseOptimization(tmpstr) != OK)
|
|
return error("unknown optimization flag '%s'", tmpstr);
|
|
}
|
|
else
|
|
return error(".opt directive needs every switch enclosed inside quotation marks");
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
|
|
//
|
|
// .if, Start conditional assembly
|
|
//
|
|
int d_if(void)
|
|
{
|
|
WORD eattr;
|
|
uint64_t eval;
|
|
SYM * esym;
|
|
IFENT * rif = f_ifent;
|
|
|
|
// Alloc an IFENTRY
|
|
if (rif == NULL)
|
|
rif = (IFENT *)malloc(sizeof(IFENT));
|
|
else
|
|
f_ifent = rif->if_prev;
|
|
|
|
rif->if_prev = ifent;
|
|
ifent = rif;
|
|
|
|
if (!disabled)
|
|
{
|
|
if (expr(exprbuf, &eval, &eattr, &esym) != OK)
|
|
return 0;
|
|
|
|
if ((eattr & DEFINED) == 0)
|
|
return error(undef_error);
|
|
|
|
disabled = !eval;
|
|
}
|
|
|
|
rif->if_state = (WORD)disabled;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .else, Do alternate case for .if
|
|
//
|
|
int d_else(void)
|
|
{
|
|
IFENT * rif = ifent;
|
|
|
|
if (rif->if_prev == NULL)
|
|
return error("mismatched .else");
|
|
|
|
if (disabled)
|
|
disabled = rif->if_prev->if_state;
|
|
else
|
|
disabled = 1;
|
|
|
|
rif->if_state = (WORD)disabled;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// .endif, End of conditional assembly block
|
|
// This is also called by fpop() to pop levels of IFENTs in case a macro or
|
|
// include file exits early with `exitm' or `end'.
|
|
//
|
|
int d_endif(void)
|
|
{
|
|
IFENT * rif = ifent;
|
|
|
|
if (rif->if_prev == NULL)
|
|
return error("mismatched .endif");
|
|
|
|
ifent = rif->if_prev;
|
|
disabled = rif->if_prev->if_state;
|
|
rif->if_prev = f_ifent;
|
|
f_ifent = rif;
|
|
return 0;
|
|
}
|
|
|