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[/] [zipcpu/] [trunk/] [sw/] - Rev 139

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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 2252d 12h /zipcpu/trunk/sw/
137 This should (again) fix the bug of trying to build optest.cpp. dgisselq 2266d 06h /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 2266d 06h /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 2266d 06h /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 2267d 03h /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 2267d 03h /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 2275d 11h /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 2277d 01h /zipcpu/trunk/sw/
123 This test now catches and tests some of the pipeline bugs I've been chasing. dgisselq 2277d 01h /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 2282d 05h /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 2282d 05h /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 2286d 01h /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 2286d 01h /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 2286d 11h /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 2286d 11h /zipcpu/trunk/sw/
114 Fixes a bug that killed make binutils before the build-gas directory
was created.
dgisselq 2291d 12h /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 2291d 16h /zipcpu/trunk/sw/
112 Removed some debugging code from the compiler. dgisselq 2294d 12h /zipcpu/trunk/sw/
111 Bug fix compiler update! This fixes a lot of the bugs associated with the
previous compiler release.
dgisselq 2294d 12h /zipcpu/trunk/sw/
110 The makefile no longer requires (or supports) building the obsolete machine
code test file optest.
dgisselq 2294d 12h /zipcpu/trunk/sw/

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