| Rev |
Log message |
Author |
Age |
Path |
| 209 |
8b bytes, + formal verification throughout + dcache |
dgisselq |
1901d 06h |
/zipcpu/trunk/sw |
| 206 |
Updated assembler, fixes several bugs, adds better bug detection and reporting (fixes some segfaults on bugs) |
dgisselq |
2621d 18h |
/zipcpu/trunk/sw |
| 203 |
Removed the (now unused) old GCC compiler, v5.3.0 |
dgisselq |
2640d 14h |
/zipcpu/trunk/sw |
| 202 |
Additional ZipCPU changes associated w 8b upgrade |
dgisselq |
2640d 15h |
/zipcpu/trunk/sw |
| 200 |
Lots of GCC bugs fixed, some new features added, longs should work now. The
build scripts have also been updated and simplified. |
dgisselq |
2739d 22h |
/zipcpu/trunk/sw |
| 192 |
Fixed a bug with constant alignment in the assembler. |
dgisselq |
2766d 15h |
/zipcpu/trunk/sw |
| 191 |
Updated toolchain, more information on the example debugger. |
dgisselq |
2781d 19h |
/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 |
2815d 13h |
/zipcpu/trunk/sw |
| 171 |
This fixes the problem whereby the ZipCPU didn't properly access more than
5 word-sized function parameters. |
dgisselq |
2817d 19h |
/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 |
2876d 17h |
/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 |
2876d 17h |
/zipcpu/trunk/sw |
| 156 |
Fixed a compiler warning for an unused result. |
dgisselq |
2908d 09h |
/zipcpu/trunk/sw |
| 146 |
Fixes a problem where the assembler complained the compiler was trying to
move .org backwards. This is now fixed. |
dgisselq |
2941d 08h |
/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 |
2941d 08h |
/zipcpu/trunk/sw |
| 142 |
Bug fix--fixes some problems with conditional execution, as well as removing
an unnecessary peephole optimization. |
dgisselq |
2942d 09h |
/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 |
2942d 09h |
/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 |
2947d 19h |
/zipcpu/trunk/sw |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
2961d 12h |
/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 |
2961d 13h |
/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 |
2961d 13h |
/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 |
2962d 10h |
/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 |
2962d 10h |
/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 |
2970d 18h |
/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 |
2972d 07h |
/zipcpu/trunk/sw |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
2972d 07h |
/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 |
2977d 11h |
/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 |
2977d 11h |
/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 |
2981d 07h |
/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 |
2981d 07h |
/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 |
2981d 18h |
/zipcpu/trunk/sw |
