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192 Fixed a bug with constant alignment in the assembler. dgisselq 2070d 12h /zipcpu/trunk/sw/
191 Updated toolchain, more information on the example debugger. dgisselq 2085d 16h /zipcpu/trunk/sw/
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 2119d 10h /zipcpu/trunk/sw/
171 This fixes the problem whereby the ZipCPU didn't properly access more than
5 word-sized function parameters.
dgisselq 2121d 16h /zipcpu/trunk/sw/
166 Bugfix version. This fixes a problem whereby function addresses with offsets
were not properly calculated, together with properly setting up pcrelative
offsets when using the move function together with a label.
dgisselq 2180d 14h /zipcpu/trunk/sw/
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 2180d 14h /zipcpu/trunk/sw/
156 Fixed a compiler warning for an unused result. dgisselq 2212d 06h /zipcpu/trunk/sw/
146 Fixes a problem where the assembler complained the compiler was trying to
move .org backwards. This is now fixed.
dgisselq 2245d 05h /zipcpu/trunk/sw/
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 2245d 05h /zipcpu/trunk/sw/
142 Bug fix--fixes some problems with conditional execution, as well as removing
an unnecessary peephole optimization.
dgisselq 2246d 06h /zipcpu/trunk/sw/
141 Fixes two bugs: one causing merged strings in the read only string section to
be referenced at the wrong address, and the second which caused the assembler
to fail at SYMBOL-OFFSET references.
dgisselq 2246d 06h /zipcpu/trunk/sw/
138 This updates the CPU multiply instruction into a set of three instructions.
MPY is a 32x32-bit multiply instruction, returning the low 32-bit result,
MPYUHI returns the upper 32-bits assuming the result was unsigned and MPYSHI
returns the upper 32-bits assuming the result was signed.
dgisselq 2251d 16h /zipcpu/trunk/sw/
137 This should (again) fix the bug of trying to build optest.cpp. dgisselq 2265d 09h /zipcpu/trunk/sw/
136 Oops --- missed a couple HOST_WIDE_INT values in a printf. This casts them
to (long), so that we can work on both PC's and ARMs.
dgisselq 2265d 10h /zipcpu/trunk/sw/
135 Replaced all occurrences of INTVAL(...) on printf lines with (long)INTVAL(...).
This should fix the problems zip-gcc was having while running on the ARM.
dgisselq 2265d 10h /zipcpu/trunk/sw/
127 Lots of changes and bugfixes. The disassembler produces more readable output.
The assembler and linker will no longer automatically use LDIHI--in preparation
for switching to LONG_MPY. LDIHI/LDILO pairs have been changed to BREV/LDILO
pairs. Within the compiler, conditional moves have been rebuilt. They're not
perfect yet, but they are better. Lots of peephole optimizations, etc.
dgisselq 2266d 07h /zipcpu/trunk/sw/
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 2266d 07h /zipcpu/trunk/sw/
125 This patch contains minor updates. Two are important to mention: 1) It turns
the compare optimizations back on within the zip.md file, and 2) it fixes an
internal compiler fault that was causing the compiler to such up all of my
memory in an infinite recursion.
dgisselq 2274d 14h /zipcpu/trunk/sw/
124 Lots of changes, lots of bugfixes--both to the compiler as well as to the
assembler. (Ex: the assembler will now properly execute a LDI _sym+5,R0).
Many compiler optimizations have been turned off, however. They will probably
be turned back on in the near future--once I get this version proven without
them.
dgisselq 2276d 04h /zipcpu/trunk/sw/
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2276d 04h /zipcpu/trunk/sw/

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