Rev |
Log message |
Author |
Age |
Path |
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 |
2950d 06h |
/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 |
2950d 06h |
/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 |
2954d 02h |
/zipcpu/trunk |
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 |
2954d 02h |
/zipcpu/trunk |
118 |
Fixes two bugs: 1) in the early branching code within the instruction decoder.
This prevented the early branching from working when built with Xilinx's tools,
while the code worked with Verilator. 2) The CPU was not working with the
traditional cache and early branching disabled. These two bugs masked each
other. The replacement code is simpler. |
dgisselq |
2954d 05h |
/zipcpu/trunk |
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 |
2954d 12h |
/zipcpu/trunk |
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 |
2954d 12h |
/zipcpu/trunk |
115 |
A bug fix, applies to when there are more than 9 interrupt lines into the CPU. |
dgisselq |
2954d 12h |
/zipcpu/trunk |
114 |
Fixes a bug that killed make binutils before the build-gas directory
was created. |
dgisselq |
2959d 13h |
/zipcpu/trunk |
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 |
2959d 17h |
/zipcpu/trunk |
112 |
Removed some debugging code from the compiler. |
dgisselq |
2962d 12h |
/zipcpu/trunk |
111 |
Bug fix compiler update! This fixes a lot of the bugs associated with the
previous compiler release. |
dgisselq |
2962d 13h |
/zipcpu/trunk |
110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
2962d 13h |
/zipcpu/trunk |
109 |
This file is now marked as obsolete. |
dgisselq |
2962d 13h |
/zipcpu/trunk |
108 |
Just to clarify expectations ... this makefile hardly builds anything. |
dgisselq |
2972d 14h |
/zipcpu/trunk |
107 |
Adding a missing file. |
dgisselq |
2973d 06h |
/zipcpu/trunk |
106 |
Updated to allow building without the sources for the graphics used in the
document. |
dgisselq |
2973d 09h |
/zipcpu/trunk |
105 |
Fixed some nasty early branching bugs. Adjusted the Makefile to declare that
cpudefs.h was automatically generated from cpudefs.v, and made sure that
zipbones included the cpudefs.v so it could get the DEBUG_SCOPE define.
In addition, the test.S was updated to test long jumps, the early branching
bug we found, and all three early branching instructions: ADD #x,PC, LOC(PC),PC,
and LDI #x,PC. |
dgisselq |
2978d 13h |
/zipcpu/trunk |
104 |
An updated build script, actually builds zip-gcc. |
dgisselq |
2979d 13h |
/zipcpu/trunk |
103 |
A barely functional, but somewhat working, version of GCC to check in.
If the Lord is willing, it should be accompanied by a newlib port soon.
That port should move the GCC status from barely functional but somewhat
working to functional and working, although not (yet) complete. |
dgisselq |
2979d 18h |
/zipcpu/trunk |