| Rev |
Log message |
Author |
Age |
Path |
| 200 |
Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified. |
dgisselq |
2851d 04h |
/zipcpu/trunk/sw/zasm |
| 188 |
Adjusted the opcodes to match the binutils port: added RTN instructions, and
allowed BREAK instructions to include an immediate--to be interpreted by the
debugger. |
dgisselq |
2926d 18h |
/zipcpu/trunk/sw/zasm |
| 165 |
Added a test to make certain that the arithmetic right shift was properly
propagating the high order bit. (The test works under verilator, but didn't
initially work in Xilinx -- thus a difference between the two.) |
dgisselq |
2987d 23h |
/zipcpu/trunk/sw/zasm |
| 156 |
Fixed a compiler warning for an unused result. |
dgisselq |
3019d 15h |
/zipcpu/trunk/sw/zasm |
| 143 |
This section belatedly adjusts the zasm assembler so that it can handle
the LONG_MPY changes that have taken place. However, the test.S assembler
test script is still not properly testing the multiplies--at least it will
succeed on everything else. |
dgisselq |
3052d 14h |
/zipcpu/trunk/sw/zasm |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
3072d 18h |
/zipcpu/trunk/sw/zasm |
| 126 |
Lots of changes preparing the assembly for an instruction set change. While
implemented, they are still commented out via #ifdef LONG_MPY. By defining
LONG_MPY, this new change set will take place. |
dgisselq |
3073d 15h |
/zipcpu/trunk/sw/zasm |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
3083d 13h |
/zipcpu/trunk/sw/zasm |
| 110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
3101d 00h |
/zipcpu/trunk/sw/zasm |
| 109 |
This file is now marked as obsolete. |
dgisselq |
3101d 00h |
/zipcpu/trunk/sw/zasm |
| 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 |
3117d 00h |
/zipcpu/trunk/sw/zasm |
| 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 |
3118d 05h |
/zipcpu/trunk/sw/zasm |
| 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 |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 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 |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 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 |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 97 |
Added longjump instructions. |
dgisselq |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
3122d 16h |
/zipcpu/trunk/sw/zasm |
| 95 |
Fixed a bug whereby a mistaken code for CLR was masking a valid LDI of a large
integer value. |
dgisselq |
3124d 22h |
/zipcpu/trunk/sw/zasm |
| 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 |
3157d 17h |
/zipcpu/trunk/sw/zasm |
