mirror of https://github.com/uffejakobsen/acme.git
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
// ACME - a crossassembler for producing 6502/65c02/65816/65ce02 code.
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// Copyright (C) 1998-2020 Marco Baye
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// Have a look at "acme.c" for further info
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//
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// Output stuff (FIXME - split into outbuf, outfile/format and vcpu parts)
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#ifndef output_H
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#define output_H
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#include <stdio.h>
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#include "config.h"
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// constants
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#define MEMINIT_USE_DEFAULT 256
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// segment flags
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#define SEGMENT_FLAG_OVERLAY (1u << 0) // do not warn about this segment overwriting another one
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#define SEGMENT_FLAG_INVISIBLE (1u << 1) // do not warn about other segments overwriting this one
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// current CPU state
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// FIXME - move vcpu struct definition to .c file and change other .c files' accesses to fn calls. then replace "struct number" with minimized version.
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struct vcpu {
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const struct cpu_type *type; // current CPU type (default 6502) (FIXME - move out of struct again?)
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struct number pc; // current program counter (pseudo value)
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int add_to_pc; // add to PC after statement
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boolean a_is_long;
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boolean xy_are_long;
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};
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// variables
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extern struct vcpu CPU_state; // current CPU state FIXME - restrict visibility to .c file
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// Prototypes
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// clear segment list and disable output
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//TODO - does this belong to outbuf stuff?
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extern void Output_passinit(void);
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// outbuf stuff:
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// alloc and init mem buffer (done later)
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extern void Output_init(signed long fill_value, boolean use_large_buf);
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// skip over some bytes in output buffer without starting a new segment
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// (used by "!skip", and also called by "!binary" if really calling
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// Output_byte would be a waste of time)
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extern void output_skip(int size);
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// Send low byte of arg to output buffer and advance pointer
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// FIXME - replace by output_sequence(char *src, size_t size)
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extern void (*Output_byte)(intval_t);
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// define default value for empty memory ("!initmem" pseudo opcode)
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// returns zero if ok, nonzero if already set
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extern int output_initmem(char content);
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// outfile stuff:
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// try to set output format held in DynaBuf. Returns zero on success.
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extern int outputfile_set_format(void);
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extern const char outputfile_formats[]; // string to show if outputfile_set_format() returns nonzero
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// if file format was already chosen, returns zero.
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// if file format isn't set, chooses CBM and returns 1.
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extern int outputfile_prefer_cbm_format(void);
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// try to set output file name held in DynaBuf. Returns zero on success.
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extern int outputfile_set_filename(void);
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// write smallest-possible part of memory buffer to file
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extern void Output_save_file(FILE *fd);
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// change output pointer and enable output
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extern void Output_start_segment(intval_t address_change, bits segment_flags);
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// Show start and end of current segment
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extern void Output_end_segment(void);
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extern char output_get_xor(void);
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extern void output_set_xor(char xor);
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// set program counter to defined value (TODO - allow undefined!)
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extern void vcpu_set_pc(intval_t new_pc, bits flags);
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// get program counter
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extern void vcpu_read_pc(struct number *target);
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// get size of current statement (until now) - needed for "!bin" verbose output
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extern int vcpu_get_statement_size(void);
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// adjust program counter (called at end of each statement)
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extern void vcpu_end_statement(void);
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struct pseudopc;
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// start offset assembly
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extern void pseudopc_start(struct number *new_pc);
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// end offset assembly
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extern void pseudopc_end(void);
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// this is only for old, deprecated, obsolete, stupid "realpc":
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extern void pseudopc_end_all(void);
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// un-pseudopc a label value by given number of levels
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// returns nonzero on error (if level too high)
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extern int pseudopc_unpseudo(struct number *target, struct pseudopc *context, unsigned int levels);
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// return pointer to current "pseudopc" struct (may be NULL!)
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// this gets called when parsing label definitions
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extern struct pseudopc *pseudopc_get_context(void);
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#endif
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