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[/] [zipcpu/] [trunk/] [sw/] [zasm] - Rev 209

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209 8b bytes, + formal verification throughout + dcache dgisselq 989d 00h /zipcpu/trunk/sw/zasm
202 Additional ZipCPU changes associated w 8b upgrade dgisselq 1728d 08h /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 1827d 16h /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 1903d 07h /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 1964d 11h /zipcpu/trunk/sw/zasm
156 Fixed a compiler warning for an unused result. dgisselq 1996d 03h /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 2029d 02h /zipcpu/trunk/sw/zasm
137 This should (again) fix the bug of trying to build optest.cpp. dgisselq 2049d 06h /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 2050d 04h /zipcpu/trunk/sw/zasm
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2060d 01h /zipcpu/trunk/sw/zasm
110 The makefile no longer requires (or supports) building the obsolete machine
code test file optest.
dgisselq 2077d 12h /zipcpu/trunk/sw/zasm
109 This file is now marked as obsolete. dgisselq 2077d 12h /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 2093d 12h /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 2094d 17h /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 2099d 04h /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 2099d 04h /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 2099d 04h /zipcpu/trunk/sw/zasm
98 Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality.
dgisselq 2099d 04h /zipcpu/trunk/sw/zasm
97 Added longjump instructions. dgisselq 2099d 04h /zipcpu/trunk/sw/zasm
96 Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses.
dgisselq 2099d 04h /zipcpu/trunk/sw/zasm

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