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[/] [zipcpu/] [trunk/] [sw/] [zasm/] - Rev 200

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200 Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified.
dgisselq 2034d 23h /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 2110d 13h /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 2171d 18h /zipcpu/trunk/sw/zasm/
156 Fixed a compiler warning for an unused result. dgisselq 2203d 10h /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 2236d 09h /zipcpu/trunk/sw/zasm/
137 This should (again) fix the bug of trying to build optest.cpp. dgisselq 2256d 13h /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 2257d 10h /zipcpu/trunk/sw/zasm/
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2267d 08h /zipcpu/trunk/sw/zasm/
110 The makefile no longer requires (or supports) building the obsolete machine
code test file optest.
dgisselq 2284d 19h /zipcpu/trunk/sw/zasm/
109 This file is now marked as obsolete. dgisselq 2284d 19h /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 2300d 19h /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 2302d 00h /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 2306d 11h /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 2306d 11h /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 2306d 11h /zipcpu/trunk/sw/zasm/
98 Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality.
dgisselq 2306d 11h /zipcpu/trunk/sw/zasm/
97 Added longjump instructions. dgisselq 2306d 11h /zipcpu/trunk/sw/zasm/
96 Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses.
dgisselq 2306d 11h /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 2308d 17h /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 2341d 12h /zipcpu/trunk/sw/zasm/

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