| Rev |
Log message |
Author |
Age |
Path |
| 202 |
Additional ZipCPU changes associated w 8b upgrade |
dgisselq |
2612d 11h |
/zipcpu/trunk/sw/zasm/ |
| 200 |
Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified. |
dgisselq |
2711d 19h |
/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 |
2787d 09h |
/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 |
2848d 14h |
/zipcpu/trunk/sw/zasm/ |
| 156 |
Fixed a compiler warning for an unused result. |
dgisselq |
2880d 06h |
/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 |
2913d 05h |
/zipcpu/trunk/sw/zasm/ |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
2933d 09h |
/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 |
2934d 06h |
/zipcpu/trunk/sw/zasm/ |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
2944d 04h |
/zipcpu/trunk/sw/zasm/ |
| 110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
2961d 15h |
/zipcpu/trunk/sw/zasm/ |
| 109 |
This file is now marked as obsolete. |
dgisselq |
2961d 15h |
/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 |
2977d 15h |
/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 |
2978d 20h |
/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 |
2983d 07h |
/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 |
2983d 07h |
/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 |
2983d 07h |
/zipcpu/trunk/sw/zasm/ |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
2983d 07h |
/zipcpu/trunk/sw/zasm/ |
| 97 |
Added longjump instructions. |
dgisselq |
2983d 07h |
/zipcpu/trunk/sw/zasm/ |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
2983d 07h |
/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 |
2985d 13h |
/zipcpu/trunk/sw/zasm/ |
