| Rev |
Log message |
Author |
Age |
Path |
| 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 |
2953d 01h |
/zipcpu/trunk/sw/ |
| 112 |
Removed some debugging code from the compiler. |
dgisselq |
2955d 21h |
/zipcpu/trunk/sw/ |
| 111 |
Bug fix compiler update! This fixes a lot of the bugs associated with the
previous compiler release. |
dgisselq |
2955d 21h |
/zipcpu/trunk/sw/ |
| 110 |
The makefile no longer requires (or supports) building the obsolete machine
code test file optest. |
dgisselq |
2955d 21h |
/zipcpu/trunk/sw/ |
| 109 |
This file is now marked as obsolete. |
dgisselq |
2955d 21h |
/zipcpu/trunk/sw/ |
| 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 |
2971d 21h |
/zipcpu/trunk/sw/ |
| 104 |
An updated build script, actually builds zip-gcc. |
dgisselq |
2972d 21h |
/zipcpu/trunk/sw/ |
| 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 |
2973d 02h |
/zipcpu/trunk/sw/ |
| 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 |
2975d 10h |
/zipcpu/trunk/sw/ |
| 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 |
2977d 13h |
/zipcpu/trunk/sw/ |
| 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 |
2977d 13h |
/zipcpu/trunk/sw/ |
| 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 |
2977d 13h |
/zipcpu/trunk/sw/ |
| 98 |
Added justed longjump instructions from the previous (not used, broken)
functionality to the new LOD (PC),PC functionality. |
dgisselq |
2977d 13h |
/zipcpu/trunk/sw/ |
| 97 |
Added longjump instructions. |
dgisselq |
2977d 13h |
/zipcpu/trunk/sw/ |
| 96 |
Added the longjump functionality, so that the assembler will properly assemble
instructions to arbitrary 32-bit addresses. |
dgisselq |
2977d 13h |
/zipcpu/trunk/sw/ |
| 95 |
Fixed a bug whereby a mistaken code for CLR was masking a valid LDI of a large
integer value. |
dgisselq |
2979d 19h |
/zipcpu/trunk/sw/ |
| 94 |
These changes make it possible to build binutils-2.25/ here in this
directory. "make binutils" should be all that is necessary to build the
entire binutils package for the Zip CPU.
The default configure script, run from gas-script.sh below, will build and
install these utilities in an install/ subdirectory made below sw/. |
dgisselq |
3004d 16h |
/zipcpu/trunk/sw/ |
| 93 |
A BINUTILS BACKEND IS NOW AVAILABLE!!!! |
dgisselq |
3012d 14h |
/zipcpu/trunk/sw/ |
| 89 |
Minor changes, to include making default branching an ADD.[condition] X,PC
instruction, rather than allowing both MOV X(PC),PC and ADD X,PC instructions.
Further zopcodes.cpp contains several bug fixes. |
dgisselq |
3012d 14h |
/zipcpu/trunk/sw/ |
| 70 |
Updated the assembler support files, zopcodes in particular, to handle
the disassembly of the new very long instruction word codes. |
dgisselq |
3043d 16h |
/zipcpu/trunk/sw/ |
| 69 |
This implements the "new Instruction Set" architecture for the Zip CPU. It's
a massive change set, that touches just about everything but probably not
enough of everything. Please see the spec.pdf for a description of this
new architecture. |
dgisselq |
3049d 20h |
/zipcpu/trunk/sw/ |
| 60 |
Fixed assembler processing of jump instructions, so that the new fast
return instruction can be used. The test file was modified to test
pipelined value passing within the CPU. That's where the value gets
(re)used before being stored back in the register file. As of this release,
all tests work. |
dgisselq |
3110d 21h |
/zipcpu/trunk/sw/ |
| 59 |
Adjusted these library routines to use the new stack frame and calling
conventions. |
dgisselq |
3110d 21h |
/zipcpu/trunk/sw/ |
| 55 |
A test was added to double check whether carry following right shifts worked.
This was a necessary part of getting two cycle linear feedback shift register
operations working for a memory test on a XuLA2 board. With this, I can now
verify that such feedback registers work for pseudorandom number purposes. |
dgisselq |
3120d 23h |
/zipcpu/trunk/sw/ |
| 54 |
This builds on the support for backslash character escapes in both single
and multicharacter expressions. Backslash character escapes are now
possible with quotations and backslashes, and the same code to interpret
the escapes is applied to both single and multicharacter sequences. |
dgisselq |
3120d 23h |
/zipcpu/trunk/sw/ |
| 53 |
Updated the #include/#define directives to work properly for nested includes.
(They were supposed to work properly for nested includes before ... and didn't)
This fixes those bugs. |
dgisselq |
3120d 23h |
/zipcpu/trunk/sw/ |
| 52 |
Added the capability to "see" character's encoded within a binary file,
by printing the character value(s) of each opcode (if they are printable)
on each line. |
dgisselq |
3120d 23h |
/zipcpu/trunk/sw/ |
| 51 |
Added the capability to look at binary files and 'see' characters as they
are encoded in memory. |
dgisselq |
3120d 23h |
/zipcpu/trunk/sw/ |
| 46 |
A series of updates associated with getting Dhrystone to work. Includes
updates to getting multiple files to link/work together within the assembler,
as well as getting quoted quotations to work in the lexer, and better
include file support in the preprocessor. |
dgisselq |
3130d 15h |
/zipcpu/trunk/sw/ |
| 45 |
Library routines for 32-bit multiply and divide, both signed and unsigned. |
dgisselq |
3130d 15h |
/zipcpu/trunk/sw/ |
