2004-01-11 Vangelis Rokas <vrokas@otenet.gr>

2004-01-11 Vangelis Rokas <vrokas@otenet.gr>

	SDCC source changes:
	* src/SDCCopt.c (cntToFcall, cnvToFloatCast, cnvFromFloatCast,
	convilong): modified to inform the pic16 port that builtin functions
	are external

	PIC16 PORT specific changes:
	* src/pic16/device.c pic16_dump_equates() added,
	processor registers declared internally by the port are emitted in
	the translation as equates,
	* src/pic16/gen.c: inline code is passed unprocessed to the
	translation,
	* (pic16_popGetLit2): fnuction modified to take second operand as
	pCodeOp pointer and not as literal,
	* (popRegFromIdx): prefixed with pic16_,
	* (pic16_popCombine2): modified to receive already allocated pCode
	operands,
	* (pic16_pushpCodeOpReg, pic16_poppCodeOpReg): added
	* (genFunction): initializes local stack frame and pushes on stack
	all the registers used by this function,
	* (genEndFunction): restores all registers from stack and restores
	stack frame,
	* src/pic16/glue.c (pic16emitRegularMap): various changes and
	improvements,
	* (pic16glue): changed the program startup sequence,
	* added new dbName code 'A' for functions placed in absolute section
	* src/pic16/main.c: added function attribute _naked,
	* added pragma 'code' to place a fnuction at an absolute address,
	* added command line arguments --debug-ralloc and --pcode-verbose,
	* (_pic16_finiliseOptions): options.all_callee_saves is set by default
	* src/pic16/pcode.c (pic16_pBlockConvert2Absolute) added,
	* (pic16_newpCodeOpLit2): modified to take the second operand as
	pCodeOp pointer,
	* (pic16_printpBlock): modified to emit each function in a separate
	section,
	* (pic16_get_op): modified to use the gpasm modifiers LOW,HIGH and
	UPPER for immediate operands,
	* src/pic16/pcodepeeph.c: added peephole support for the LFSR
	instruction,
	* src/pic16/peeph.def: all peepholes with movff are commented out,
	because there is a problem in the pcode peep optimizer,
	* src/pic16/ralloc.c: the register allocator can now reuse local
	function symbols for another function. This saves register usage.
	* src/pic16/ralloc.h: added flag isLocal in structure regs,

	Added file src/pic16/NOTES with information about program writing on
	the current port version.

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3112 4a8a32a2-be11-0410-ad9d-d568d2c75423