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[/] [zipcpu/] [trunk/] - Rev 149

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Rev Log message Author Age Path
129 Bug fix. Fixes some ugly race conditions that would cause code from the wrong
address to be executed.		 dgisselq 2926d 17h /zipcpu/trunk/
128 Cleaned up some comments. dgisselq 2926d 17h /zipcpu/trunk/
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 2926d 17h /zipcpu/trunk/
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 2926d 17h /zipcpu/trunk/
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 2935d 01h /zipcpu/trunk/
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 2936d 15h /zipcpu/trunk/
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2936d 15h /zipcpu/trunk/
122 This represents a major rewrite of the machine definition file, gcc/config/zip/
zip.md. In particular, the architecture has been changed from a "cc0"
architecture to one with a specific CC_REG and CCmode. Instructions in the
machine definition file must now explicitly set this register with their
results. The result is better condition code handling, better usage of the
conditional execution modes of certain instructions, and even some decent
optimizations.		 dgisselq 2941d 19h /zipcpu/trunk/
121 Fixed the bug whereby BGE instructions dissassembled as BGT instructions and
vice versa. Loads and stores of absolute addresses now show those addresses
in ($<>). The assembler also accepts integer offsets to symbols, although
it isn't clear that it does the "right" thing with them yet.		 dgisselq 2941d 19h /zipcpu/trunk/
120 Should've regression tested that last build. This one fixes what that last
fix broke: Registers with offsets (i.e. operand-B) now work (again).		 dgisselq 2945d 15h /zipcpu/trunk/

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