David Given
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8105281534
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Make sure li works properly when loading fixed up values which end up as 0. Use
lui rather than li to load high values.
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2018-09-12 22:28:40 +02:00 |
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David Given
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8379969b6f
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Fix an unsubtle bug where subtractions were done backwards...
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2018-09-11 23:16:50 +02:00 |
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David Given
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8230ec42ac
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Fix a subtle thinko which was causing bits 2-3 of jump targets to be reset.
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2018-09-11 23:16:30 +02:00 |
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David Given
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0ce368324e
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Add the bitset helpers. We now have enough helpers for the tests to run (and
massively fail).
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2018-09-10 23:37:28 +02:00 |
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David Given
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2f8fe3ce6e
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Do some cleanup; ha16[] and friends can now be used with li.
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2018-09-10 23:37:04 +02:00 |
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David Given
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3122946a6f
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Replaced some incorrect hi16s with ha16s.
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2018-09-10 23:21:54 +02:00 |
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David Given
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008737ed19
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Added some more very untested helper functions.
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2018-09-10 23:20:52 +02:00 |
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David Given
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a1747ac916
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Add the .dataf4 and .dataf8 directives to the assembler --- manually converting
floats and doubles to bytes is not fun. It might even work!
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2018-09-10 22:56:18 +02:00 |
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David Given
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185e910246
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Lots more untested helper functions.
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2018-09-10 01:08:25 +02:00 |
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David Given
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f8f6fa9fc1
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Added some more incredibly untested helper functions.
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2018-09-10 00:21:16 +02:00 |
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David Given
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bb15c03339
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Remember to preserve input registers if we're going to be reading from them
after writing to the output register.
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2018-09-09 18:53:49 +02:00 |
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David Given
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e88670dad4
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Yikes! Turns out that FPU registers are only 32 bits wide, and doubles are
stored in pairs, just like on the PowerPC!
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2018-09-09 18:25:00 +02:00 |
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David Given
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5dfef6f180
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Rework relocations again: add RELO2HI and RELO2HISAD for the high two bytes of
a word.
|
2018-09-09 14:11:11 +02:00 |
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David Given
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95dd6f0141
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Fix some niggling issues --- we have our first binary now!
|
2018-09-09 12:24:22 +02:00 |
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David Given
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b3b7c684c6
|
Simplify MIPS relocations. Add RELS2 (for generic high-word relocations). Add
support for MIPS branch-and-jump relocations.
|
2018-09-09 12:23:59 +02:00 |
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David Given
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d2a1d4dcda
|
Added some very untested csa and csb implementations, based on the PowerPC
ones.
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2018-09-08 23:12:57 +02:00 |
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David Given
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75308901bc
|
Added hi[] and lo[] functions to the assembler; fix things enough that we now
get to the point of failing to link programs.
|
2018-09-08 22:42:06 +02:00 |
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David Given
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379c1a4a3c
|
Rework floating point conversion. Bash enough of the table into workingness
that the libraries build now.
|
2018-09-08 22:06:38 +02:00 |
|
David Given
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d2c14ca44f
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Precisely one stack hreg gets allocated for each vreg/congruence group for
eviction; this prevents us from having to worry about moving values from stack
slot to stack slot, which is hard.
|
2018-09-08 18:59:55 +02:00 |
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David Given
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b7a1c96986
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MIPS appears to hate converting unsigneds to floats and vice versa.
|
2018-09-05 23:53:38 +02:00 |
|
David Given
|
7fbce066f8
|
We attempt to compile the first library function; we fail.
|
2018-09-05 00:13:01 +02:00 |
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David Given
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26fe3f7530
|
Added library skeletons.
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2018-09-05 00:07:07 +02:00 |
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David Given
|
26c0228b14
|
The examples all compile now (probably incorrectly, and the libc doesn't
compile yet).
|
2018-09-04 23:55:28 +02:00 |
|
David Given
|
9d80756253
|
Lots of assembler and rule bugfixing.
|
2018-09-04 23:43:24 +02:00 |
|
David Given
|
fe5ca5a85f
|
Added li and la instructions.
|
2018-09-03 22:47:41 +02:00 |
|
David Given
|
26f9b4ceae
|
Add in floating point support to the code generator.
|
2018-09-03 22:06:05 +02:00 |
|
David Given
|
f8e71d888b
|
Add some painfully untested FPU instructions.
|
2018-09-02 21:36:09 +02:00 |
|
David Given
|
1d6ecddcf4
|
The MIPS backend is still full of holes, and cut-and-pasted PowerPC code, but
is beginning to look like an actual code generator.
|
2018-09-02 18:57:25 +02:00 |
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David Given
|
4741ed8e14
|
Add a completely non-tested table-based MIPS assembler.
|
2018-09-01 19:35:31 +02:00 |
|