| Rev |
Log message |
Author |
Age |
Path |
| 140 |
Minor changes, but fixes build of zippy_tb.cpp. |
dgisselq |
3102d 14h |
/zipcpu/ |
| 139 |
Changes necessary to document the changed instruction set: LDIHI became MPY,
and MPYU and MPYS became MPYUHI and MPYSHI respectively. See the specification
for more details. |
dgisselq |
3105d 12h |
/zipcpu/ |
| 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 |
3105d 12h |
/zipcpu/ |
| 137 |
This should (again) fix the bug of trying to build optest.cpp. |
dgisselq |
3119d 05h |
/zipcpu/ |
| 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 |
3119d 06h |
/zipcpu/ |
| 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 |
3119d 06h |
/zipcpu/ |
| 134 |
Working updates, to keep this up to date with the RTL code. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 133 |
Changes preceding an instruction set update, which will change the multiply
operation from a 16x16 bit multiply to three types of 32x32-bit multiplies. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 132 |
Lots of minor bug fixes. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 131 |
Fixed a variable use before declaration error. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 130 |
Simplified the lock logic, and removed it when pipelining was not defined. This
also means the file is now dependent upon cpudefs.v. In another change, brev
was modified so as not to update the flags. This makes it useable with GCC
as a potential move or load immediate instruction. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 129 |
Bug fix. Fixes some ugly race conditions that would cause code from the wrong
address to be executed. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 128 |
Cleaned up some comments. |
dgisselq |
3120d 02h |
/zipcpu/ |
| 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 |
3120d 02h |
/zipcpu/ |
| 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 |
3120d 03h |
/zipcpu/ |
| 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 |
3128d 10h |
/zipcpu/ |
| 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 |
3130d 00h |
/zipcpu/ |
| 123 |
This test now catches and tests some of the pipeline bugs I've been chasing. |
dgisselq |
3130d 00h |
/zipcpu/ |
| 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 |
3135d 04h |
/zipcpu/ |
| 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 |
3135d 04h |
/zipcpu/ |
