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[/] [zipcpu/] [trunk/] [sw] - Rev 202

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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 2929d 05h /zipcpu/trunk/sw
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2929d 05h /zipcpu/trunk/sw
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 2934d 09h /zipcpu/trunk/sw
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 2934d 09h /zipcpu/trunk/sw
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 2938d 04h /zipcpu/trunk/sw
119 Fixed some limits bugs. Now LDI.Z 1 produces LDIHI.Z 0, LDOLO.Z 1 as desired
instead of the erroneous BREV.Z 0. Likewise, loading 0x80000000 no longer
produces a clear instruction, but actually loads the value of interest.		 dgisselq 2938d 05h /zipcpu/trunk/sw
117 Bug fixes: This adds the zip_ucc() instruction as a builtin, fixes the zip_cc()
builtin (both are now unspec_volatile) together with fixing the *_context(int*)
builtins so that they use five registers, never four. Further, this fixes the
negative stack space offset bug. Many of the GCC files now have Zip debugging
hooks within them as well, to simplify further debugging of the compiler.		 dgisselq 2938d 15h /zipcpu/trunk/sw
116 Updated binutils. This fixes problems with linking global variables, fixes
the map file report, adjusts the LJMP instruction disassembly to display the
resulting address, as well as in general fixing up link problems when
sizeof(byte) is 32-bits.		 dgisselq 2938d 15h /zipcpu/trunk/sw
114 Fixes a bug that killed make binutils before the build-gas directory
was created.		 dgisselq 2943d 16h /zipcpu/trunk/sw
113 Bug fix: the Makefile wasn't building gcc, and the binutils would not allocate
space for common variables or zero'd (bss) variables properly. Several binutils
bugs were fixed to get variables to be allocated properly. Those are
reflected in this updated patch.		 dgisselq 2943d 20h /zipcpu/trunk/sw

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