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[/] [zipcpu/] - Rev 115

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Rev Log message Author Age Path
115 A bug fix, applies to when there are more than 9 interrupt lines into the CPU. dgisselq 2973d 06h /zipcpu/
114 Fixes a bug that killed make binutils before the build-gas directory
was created.
dgisselq 2978d 07h /zipcpu/
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 2978d 10h /zipcpu/
112 Removed some debugging code from the compiler. dgisselq 2981d 06h /zipcpu/
111 Bug fix compiler update! This fixes a lot of the bugs associated with the
previous compiler release.
dgisselq 2981d 06h /zipcpu/
110 The makefile no longer requires (or supports) building the obsolete machine
code test file optest.
dgisselq 2981d 07h /zipcpu/
109 This file is now marked as obsolete. dgisselq 2981d 07h /zipcpu/
108 Just to clarify expectations ... this makefile hardly builds anything. dgisselq 2991d 08h /zipcpu/
107 Adding a missing file. dgisselq 2991d 23h /zipcpu/
106 Updated to allow building without the sources for the graphics used in the
document.
dgisselq 2992d 03h /zipcpu/
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 2997d 07h /zipcpu/
104 An updated build script, actually builds zip-gcc. dgisselq 2998d 07h /zipcpu/
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 2998d 11h /zipcpu/
102 Updated bugfix version of the binutils patch, and a first patch of GCC.
The GCC patch is undergoing ongoing and active development. It is also known to
continue to contain active bugs. (It's not done yet.)
dgisselq 3000d 20h /zipcpu/
101 Adjusted the "BREAK" instruction so that it will now disassemble properly
with an operand. This was necessary to create a (trap_if ...) instruction
for the GCC compiler.
dgisselq 3002d 23h /zipcpu/
100 Some changes to support early branching: branches are now ADD #x,PC instructions
instead of MOV #x(PC),PC--providing greater range to the CPU. When that range
is insufficient, ZPARSER now recognizes long jump instructions coded as
LOD (PC),PC followed by the jump address. (This change was made necessary by
the need to build an assembler/linker that could create instructions that would
jump to any address in the 32-bit address space. In short, a part of the
ongoing GCC upgrade and rework.)
dgisselq 3002d 23h /zipcpu/
99 Added big-endian versus little-endian functionality. You can now specify which
your input file is as a command line parameter, and zdump will properly
disassemble the file.
dgisselq 3002d 23h /zipcpu/
98 Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality.
dgisselq 3002d 23h /zipcpu/
97 Added longjump instructions. dgisselq 3002d 23h /zipcpu/
96 Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses.
dgisselq 3002d 23h /zipcpu/

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