" Vim syntax file
" Language:	FRISC assembler	
" Maintainer:	Goran Jakovljevic <goran.jakovljevic@fer.hr>
" Last Change:	2002 April 15

" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
	syntax clear
elseif exists("b:current_syntax")
	finish
endif

syn case match

"identifiers
"syn match friscIdentifier	"[a-zA-Z][0-9a-zA-Z]*"

"comments
syn match friscComment		";.*$"

"numbers
syn match friscNumber		"\<[0-9]\+\>"
syn match friscNumber		"[-+][0-9]\+\>"
syn match friscNumber		"\<[0-9a-fA-F]\+\>"
syn match friscNumber		"[-+][0-9a-fA-F]\+\>"

"operators
syn match friscOperator		"[(),]"

"registers
syn match friscRegister		"\<R[0-7]" contains=friscNumber

"instructions
syn keyword friscSpecialKeyword	PUSH POP RDST WRST
syn match friscArithmKeyword	"\<ADD\(\|cc\|nc\)\>"
syn match friscArithmKeyword	"\<ADC\(\|cc\|nc\)\>"
syn match friscArithmKeyword	"\<SUB\(\|cc\|nc\)\>"
syn match friscArithmKeyword	"\<SBC\(\|cc\|nc\)\>"
syn match friscArithmKeyword	"\<CMP\(\|cc\|nc\)\>"
syn match friscLogicKeyword	"\<AND\(\|cc\|nc\)\>"
syn match friscLogicKeyword	"\<OR\(\|cc\|nc\)\>"
syn match friscLogicKeyword	"\<XOR\(\|cc\|nc\)\>"
syn match friscLogicKeyword	"\<ROTR\(\|cc\|nc\)\>"
syn match friscLogicKeyword	"\<ROTL\(\|cc\|nc\)\>"
syn match friscMemoryKeyword	"\<LOAD\(\|cc\|nc\)\>"
syn match friscMemoryKeyword	"\<STORE\(\|cc\|nc\)\>"
syn match friscSpecialKeyword	"\<LOADL\(\|cc\|nc\)\>"
syn match friscSpecialKeyword	"\<LOADH\(\|cc\|nc\)\>"

syn match friscCondition	"\(\|_\(UC\|\(\(\|N\)\(C\|V\|N\|Z\)\)\|M\|P\|EQ\|NE\|[US]\(LE\|LT\|GE\|GT\)\)\)\s"
syn match friscFlowKeyword	"\<J[PR]\(\|_\(UC\|\(\(\|N\)\(C\|V\|N\|Z\)\)\|M\|P\|EQ\|NE\|[US]\(LE\|LT\|GE\|GT\)\)\)\>" contains=friscCondition
syn match friscFlowKeyword	"\<\(CALL\|RET\|RET[IN]\)\(\|_\(UC\|\(\(\|N\)\(C\|V\|N\|Z\)\)\|M\|P\|EQ\|NE\|[US]\(LE\|LT\|GE\|GT\)\)\)\>" contains=friscCondition

"assembly translated instructions
syn keyword friscAsmKeyword	NOP HALT
syn match friscAsmKeyword	"\<CLEAR\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<COMPL\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<NEG\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<SUBR\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<INC\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<DEC\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<TEST\(\|cc\|nc\)\>"
syn match friscAsmKeyword	"\<MOVE\(\|cc\|nc\)\>"


"pseudo instructions
syn match friscPseudoKeyword	"`\(ORG\|DW\|\DB\|DS\|EQU\|END\|BASE\)"
syn match friscPseudoKeyword	"%[HDOB]"
syn match friscPseudoKeyword	"#\(LO\|HI\)"


syn case ignore

" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_frisc_syntax_inits")
	if version < 508
		let did_frisc_syntax_inits = 1
		command -nargs=+ HiLink hi link <args>
	else
		command -nargs=+ HiLink hi def link <args>
	endif

	HiLink	friscSpecialKeyword	Statement
	HiLink	friscArithmKeyword	Statement
	HiLink	friscLogicKeyword	Statement
	HiLink	friscFlowKeyword	Statement
	HiLink	friscMemoryKeyword	Statement
	HiLink	friscRegister		Type
	HiLink	friscCondition		Constant
	HiLink	friscAsmKeyword		Statement
	"HiLink	friscIdentifier		Identifier
	HiLink	friscComment		Comment
	HiLink	friscPseudoKeyword	Special
	HiLink	friscNumber		Number
	HiLink	friscOperator		Operator

	
	delcommand HiLink
endif

let b:current_syntax = "frisc"

" vim: ts=8