| Commit message (Collapse) | Author | Age |
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Be permissive when signed argument is defined
as unsigned value near 2^32 because it is usual
way how the negative arguments are encoded
on 32-bit system.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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The labels are parsed and stored into symbol table
but expressions dependent on symbols values are not evaluated.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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There are some singletons left which are allocated/created
during main window content population.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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notification added.
This change together with use of PhysAddrSpace as the memory
content source for memory and program view allows to access
and monitor contents of peripheral registers and frame-buffer
memory from graphic user interface.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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under some circumstances.
It seems that under Emscripten build and sometimes even under Windows
build the conversion QString.toLatin1().data() does not guarantee
well formed null terminated C string.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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This allows to test simple instruction sequences without
need to install compiler.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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This allows to easier identify unused pipeline stages.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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When instructions are visualized then it is even more
misleading to keep old instruction in decode phase delay buffer.
The single cycle core with delay slot is upgraded
to the variant with fetch and execute phases.
This way the structure is logical and delay slot
has purpose.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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The word index (column) has been erroneously used
for set index value.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Ubuntu Trusty.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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library changes.
I have not found a way how to pass additional CONFIG options
to Debian package build (dpkg-buildpackage) when qmake is invoked from
debian/rules with debian helper based (dh) build.
The way how qmake solves dependencies between program and libraries
comes from stone age. It is necessary to include complete path
to the library in PRE_TARGETDEPS definition including lib prefix
and .a suffix. This is non portable and cannot be easily used
when static and dynamic libraries build alternatives are considered.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Problem reported by Jakub Broz.
Correct behaviour according to
MIPS Architecture for Programmers Volume II-A:
The MIPS32 Instruction Set Manual
which describes DIV instruction
Format: DIV rs, rt
No arithmetic exception occurs under any circumstances.
Restrictions:
If the divisor in GPR rt is zero, the arithmetic result value
is UNPREDICTABLE.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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option.
When operating system emulation root directory (fs_root) are selected
then open() syscall opens real host system files in this limited
subtree. When fs_root is not set then console is mapped to all
read, write, open and close calls.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Some instructions can have fields to be used by operating system
or for error reporting by user.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Instructions description in instruction.cpp has been
pragmatically augmented by tool based on Python MIPS simulator,
hazards analyzer
https://github.com/ppisa/apo-simarch
That code has been originally distilled from from GNU
binutils sources.
Implementation is now inline with my original proposal
Previous solution gets untenable with more complex
instructions and its complexity would grow extremely.
MIPS instruction set with coprocessor instructions
which use sel field, rd used as index, rt as destination
and other peculiarities in newer versions cannot
be processed based on basic CPU control signals.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Jump to address 0x8000180 by default and to EBase + 0x180
when EBase is set to be compatible with real MIPS CPU.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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exception.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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