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 This file describes the implementation notes of the GNU C Compiler for
 the Texas Instruments Floating Point Digital Signal Processor
 families, TMS320C3x and TMS320C4x (including the C30, C31, C32, C40,
 and C44 chips).


 Currently, only two code variants are generated---those for the C3x
 and C4x architectures.  Note that the new operand combinations for
 parallel instructions, included in newer silicon revisions, are not
 yet supported.  These should be trivial to add for someone with the
 newer chips and the inclination.


 While the generated assembly code is fairly similar to that recognised
 by the TI assembler, there are a few differences (currently the machine
 option -mti, designed to enfore compatibility, is not fully
 implemented).  The major difference is the use of the ^ operator to
 load the 16 MSBs of an address or constant for the C4x.


 The generated assembly code requires the GNU assembler (GAS).  This is
 not currently included as part of the binutils package, due to the
 many hacks required to be compatible with TI's kludged COFF
 implementation, and the binutils not being designed for 32-bit bytes.
 Patches against binutils-2.7.2 can be obtained from
 http://www.elec.canterbury.ac.nz/c4x.  This site also has patches for
 the GNU debugger (GDB), incoporating a cycle accurate simulator that
 can display profiles and histories of code execution, detailing
 pipeline conflicts etc.


 GCC can be configured as a cross compiler for both the C3x and C4x
 architectures on the same system.  Use `configure --target=c4x' to
 configure GCC for both the C3x and C4x.  Then use the -m30 option to
 generate code for the C30 or -m40 (the default) for the C40.


 Further installation notes and other optimization patches for the C4x
 target can also be obtained from http://www.elec.canterbury.ac.nz/c4x.


 A Majordomo mailing list, gcc_c40@atlantek.com.au, exists to discuss
 related issues and suggestions for further optimizations.  To
 subscribe send a message with `subscribe gcc_c40' in the body to
 majordomo@atlantek.com.au.


 Michael Hayes,  26 Nov 98
	This file describes the implementation notes of the GNU C Compiler for
	the Texas Instruments Floating Point Digital Signal Processor
	families, TMS320C3x and TMS320C4x (including the C30, C31, C32, C40,
	and C44 chips).


	Currently, only two code variants are generated---those for the C3x
	and C4x architectures. Note that the new operand combinations for
	parallel instructions, included in newer silicon revisions, are not
	yet supported. These should be trivial to add for someone with the
	newer chips and the inclination.


	While the generated assembly code is fairly similar to that recognised
	by the TI assembler, there are a few differences (currently the machine
	option -mti, designed to enfore compatibility, is not fully
	implemented). The major difference is the use of the ^ operator to
	load the 16 MSBs of an address or constant for the C4x.


	The generated assembly code requires the GNU assembler (GAS). This is
	not currently included as part of the binutils package, due to the
	many hacks required to be compatible with TI's kludged COFF
	implementation, and the binutils not being designed for 32-bit bytes.
	Patches against binutils-2.7.2 can be obtained from
	http://www.elec.canterbury.ac.nz/c4x. This site also has patches for
	the GNU debugger (GDB), incoporating a cycle accurate simulator that
	can display profiles and histories of code execution, detailing
	pipeline conflicts etc.


	GCC can be configured as a cross compiler for both the C3x and C4x
	architectures on the same system. Use `configure --target=c4x' to
	configure GCC for both the C3x and C4x. Then use the -m30 option to
	generate code for the C30 or -m40 (the default) for the C40.


	Further installation notes and other optimization patches for the C4x
	target can also be obtained from http://www.elec.canterbury.ac.nz/c4x.


	A Majordomo mailing list, gcc_c40@atlantek.com.au, exists to discuss
	related issues and suggestions for further optimizations. To
	subscribe send a message with `subscribe gcc_c40' in the body to
	majordomo@atlantek.com.au.


	Michael Hayes, 26 Nov 98