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[/] [zipcpu/] [trunk/] [sw/] - Rev 112

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Rev Log message Author Age Path
112 Removed some debugging code from the compiler. dgisselq 2892d 20h /zipcpu/trunk/sw/
111 Bug fix compiler update! This fixes a lot of the bugs associated with the
previous compiler release.
dgisselq 2892d 21h /zipcpu/trunk/sw/
110 The makefile no longer requires (or supports) building the obsolete machine
code test file optest.
dgisselq 2892d 21h /zipcpu/trunk/sw/
109 This file is now marked as obsolete. dgisselq 2892d 21h /zipcpu/trunk/sw/
105 Fixed some nasty early branching bugs. Adjusted the Makefile to declare that
cpudefs.h was automatically generated from cpudefs.v, and made sure that
zipbones included the cpudefs.v so it could get the DEBUG_SCOPE define.
In addition, the test.S was updated to test long jumps, the early branching
bug we found, and all three early branching instructions: ADD #x,PC, LOC(PC),PC,
and LDI #x,PC.
dgisselq 2908d 21h /zipcpu/trunk/sw/
104 An updated build script, actually builds zip-gcc. dgisselq 2909d 21h /zipcpu/trunk/sw/
103 A barely functional, but somewhat working, version of GCC to check in.
If the Lord is willing, it should be accompanied by a newlib port soon.
That port should move the GCC status from barely functional but somewhat
working to functional and working, although not (yet) complete.
dgisselq 2910d 02h /zipcpu/trunk/sw/
102 Updated bugfix version of the binutils patch, and a first patch of GCC.
The GCC patch is undergoing ongoing and active development. It is also known to
continue to contain active bugs. (It's not done yet.)
dgisselq 2912d 10h /zipcpu/trunk/sw/
101 Adjusted the "BREAK" instruction so that it will now disassemble properly
with an operand. This was necessary to create a (trap_if ...) instruction
for the GCC compiler.
dgisselq 2914d 13h /zipcpu/trunk/sw/
100 Some changes to support early branching: branches are now ADD #x,PC instructions
instead of MOV #x(PC),PC--providing greater range to the CPU. When that range
is insufficient, ZPARSER now recognizes long jump instructions coded as
LOD (PC),PC followed by the jump address. (This change was made necessary by
the need to build an assembler/linker that could create instructions that would
jump to any address in the 32-bit address space. In short, a part of the
ongoing GCC upgrade and rework.)
dgisselq 2914d 13h /zipcpu/trunk/sw/
99 Added big-endian versus little-endian functionality. You can now specify which
your input file is as a command line parameter, and zdump will properly
disassemble the file.
dgisselq 2914d 13h /zipcpu/trunk/sw/
98 Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality.
dgisselq 2914d 13h /zipcpu/trunk/sw/
97 Added longjump instructions. dgisselq 2914d 13h /zipcpu/trunk/sw/
96 Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses.
dgisselq 2914d 13h /zipcpu/trunk/sw/
95 Fixed a bug whereby a mistaken code for CLR was masking a valid LDI of a large
integer value.
dgisselq 2916d 19h /zipcpu/trunk/sw/
94 These changes make it possible to build binutils-2.25/ here in this
directory. "make binutils" should be all that is necessary to build the
entire binutils package for the Zip CPU.

The default configure script, run from gas-script.sh below, will build and
install these utilities in an install/ subdirectory made below sw/.
dgisselq 2941d 16h /zipcpu/trunk/sw/
93 A BINUTILS BACKEND IS NOW AVAILABLE!!!! dgisselq 2949d 14h /zipcpu/trunk/sw/
89 Minor changes, to include making default branching an ADD.[condition] X,PC
instruction, rather than allowing both MOV X(PC),PC and ADD X,PC instructions.

Further zopcodes.cpp contains several bug fixes.
dgisselq 2949d 14h /zipcpu/trunk/sw/
70 Updated the assembler support files, zopcodes in particular, to handle
the disassembly of the new very long instruction word codes.
dgisselq 2980d 16h /zipcpu/trunk/sw/
69 This implements the "new Instruction Set" architecture for the Zip CPU. It's
a massive change set, that touches just about everything but probably not
enough of everything. Please see the spec.pdf for a description of this
new architecture.
dgisselq 2986d 20h /zipcpu/trunk/sw/

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