| Rev |
Log message |
Author |
Age |
Path |
| 108 |
Just to clarify expectations ... this makefile hardly builds anything. |
dgisselq |
2965d 08h |
/zipcpu |
| 107 |
Adding a missing file. |
dgisselq |
2966d 00h |
/zipcpu |
| 106 |
Updated to allow building without the sources for the graphics used in the
document. |
dgisselq |
2966d 03h |
/zipcpu |
| 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 |
2971d 07h |
/zipcpu |
| 104 |
An updated build script, actually builds zip-gcc. |
dgisselq |
2972d 07h |
/zipcpu |
| 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 |
2972d 12h |
/zipcpu |
| 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 |
2974d 20h |
/zipcpu |
| 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 |
2976d 23h |
/zipcpu |
| 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 |
2976d 23h |
/zipcpu |
| 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 |
2976d 23h |
/zipcpu |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
2976d 23h |
/zipcpu |
| 97 |
Added longjump instructions. |
dgisselq |
2976d 23h |
/zipcpu |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
2976d 23h |
/zipcpu |
| 95 |
Fixed a bug whereby a mistaken code for CLR was masking a valid LDI of a large
integer value. |
dgisselq |
2979d 05h |
/zipcpu |
| 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 |
3004d 02h |
/zipcpu |
| 93 |
A BINUTILS BACKEND IS NOW AVAILABLE!!!! |
dgisselq |
3012d 00h |
/zipcpu |
| 92 |
Adjustments made to match the simplified early branching. |
dgisselq |
3012d 00h |
/zipcpu |
| 91 |
Minor updates. |
dgisselq |
3012d 00h |
/zipcpu |
| 90 |
Removed MOV x(PC),PC from the list of possible early branching instructions.
ADD X,PC and LDI X,PC are now the only recognized early branching instructions.
This was done to spare logic, although I don't think I spared more than a
LUT or two. |
dgisselq |
3012d 00h |
/zipcpu |
| 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 |
3012d 00h |
/zipcpu |
