; zasm
;
; Reads input from specified blkdev ID, assemble the binary in two passes and
; spit the result in another specified blkdev ID.
;
; We don't buffer the whole source in memory, so we need our input blkdev to
; support Seek so we can read the file a second time. So, for input, we need
; GetC and Seek.
;
; For output, we only need PutC. Output doesn't start until the second pass.
;
; The goal of the second pass is to assign values to all symbols so that we
; can have forward references (instructions referencing a label that happens
; later).
;
; Labels and constants are both treated the same way, that is, they can be
; forward-referenced in instructions. ".equ" directives, however, are evaluated
; during the first pass so forward references are not allowed.
;
; *** Requirements ***
; strncmp
; addDE
; addHL
; upcase
; unsetZ
; intoDE
; intoHL
; writeHLinDE
; findchar
; parseHex
; parseHexPair
; blkSel
; blkSet
; fsFindFN
; fsOpen
; fsGetC
; cpHLDE
; parseArgs
; _blkGetC
; _blkPutC
; _blkSeek
; _blkTell
; printstr
; FS_HANDLE_SIZE
; BLOCKDEV_SIZE

#include "user.h"

; *** Overridable consts ***
; Maximum number of symbols we can have in the global and consts registry
.equ	ZASM_REG_MAXCNT		0xff

; Maximum number of symbols we can have in the local registry
.equ	ZASM_LREG_MAXCNT	0x40

; Size of the symbol name buffer size. This is a pool. There is no maximum name
; length for a single symbol, just a maximum size for the whole pool.
; Global labels and consts have the same buf size
.equ	ZASM_REG_BUFSZ		0x1000

; Size of the names buffer for the local context registry
.equ	ZASM_LREG_BUFSZ		0x200

; ******

#include "err.h"
.org	USER_CODE

jp	zasmMain

#include "zasm/const.asm"
#include "lib/util.asm"
#include "zasm/util.asm"
.equ	IO_RAMSTART	USER_RAMSTART
#include "zasm/io.asm"
.equ	TOK_RAMSTART	IO_RAMEND
#include "zasm/tok.asm"
#include "lib/parse.asm"
#include "zasm/parse.asm"
#include "zasm/expr.asm"
#include "zasm/instr.asm"
.equ	DIREC_RAMSTART	TOK_RAMEND
#include "zasm/directive.asm"
.equ	SYM_RAMSTART	DIREC_RAMEND
#include "zasm/symbol.asm"
.equ	ZASM_RAMSTART	SYM_RAMEND
#include "zasm/main.asm"