David Given
c4e3d0903e
Bugfix rck.
2018-09-14 00:38:31 +02:00
David Given
8c0b2f8aee
Fix csa and csb.
2018-09-14 00:15:43 +02:00
David Given
9b0a1c1c10
Make work with clang.
2018-09-14 00:04:25 +02:00
David Given
57338b1991
Fix an incorrect instruction, and incredibly broken li handling.
2018-09-12 23:59:09 +02:00
David Given
ecb3395aba
Converting floats and doubles to integers now works, as much as these ever do
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on MIPS; turns out that it can't (or at least can't in qemu) reliably turn
INT_MIN from a double to an int.
2018-09-12 23:58:48 +02:00
David Given
642956fa2f
mcg now uses dataf4 and dataf8 to emit floating point constants, and so doesn't
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need flt_arith any more. (And also generates them correctly on little-endian
systems.) as now parses numbers properly, doesn't trash memory all over the
place, and can handle negative numbers.
2018-09-12 23:19:32 +02:00
David Given
8105281534
Make sure li works properly when loading fixed up values which end up as 0. Use
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lui rather than li to load high values.
2018-09-12 22:28:40 +02:00
David Given
a8df9721d3
Adding new tokens to the assembler isn't quite as easy as I thought: ensure
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that NUMBERF is stored properly in the temporary file.
2018-09-12 22:27:39 +02:00
David Given
5264db860d
Values are more useful shown in hex.
2018-09-11 23:17:09 +02:00
David Given
8379969b6f
Fix an unsubtle bug where subtractions were done backwards...
2018-09-11 23:16:50 +02:00
David Given
8230ec42ac
Fix a subtle thinko which was causing bits 2-3 of jump targets to be reset.
2018-09-11 23:16:30 +02:00
David Given
b81e060372
Add huge numbers of failing tests.
2018-09-10 23:40:03 +02:00
David Given
0ce368324e
Add the bitset helpers. We now have enough helpers for the tests to run (and
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massively fail).
2018-09-10 23:37:28 +02:00
David Given
2f8fe3ce6e
Do some cleanup; ha16[] and friends can now be used with li.
2018-09-10 23:37:04 +02:00
David Given
3122946a6f
Replaced some incorrect hi16s with ha16s.
2018-09-10 23:21:54 +02:00
David Given
008737ed19
Added some more very untested helper functions.
2018-09-10 23:20:52 +02:00
David Given
a1747ac916
Add the .dataf4 and .dataf8 directives to the assembler --- manually converting
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floats and doubles to bytes is not fun. It might even work!
2018-09-10 22:56:18 +02:00
David Given
53f7de794a
Ansify.
2018-09-10 22:55:05 +02:00
David Given
9733454d8e
Clang-format before editing.
2018-09-10 22:42:30 +02:00
David Given
976fa0efca
Clang-format before editing.
2018-09-10 22:37:04 +02:00
David Given
6275896a11
Clang-format before editing.
2018-09-10 22:25:14 +02:00
David Given
185e910246
Lots more untested helper functions.
2018-09-10 01:08:25 +02:00
David Given
f8f6fa9fc1
Added some more incredibly untested helper functions.
2018-09-10 00:21:16 +02:00
David Given
ee328a0572
Merge from default.
2018-09-09 18:58:07 +02:00
David Given
776e93221f
Thinko fix.
2018-09-09 18:57:44 +02:00
David Given
c769fbec93
Use the correct ELF processor flags; align properly.
2018-09-09 18:57:35 +02:00
David Given
f3bc9ef92a
Call proper Linux system calls proper-like.
2018-09-09 18:57:12 +02:00
David Given
bb15c03339
Remember to preserve input registers if we're going to be reading from them
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after writing to the output register.
2018-09-09 18:53:49 +02:00
David Given
79fd34dac6
Call atexit handlers properly, avoiding a NPE and seg fault every time a
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program exits.
2018-09-09 18:51:00 +02:00
David Given
e88670dad4
Yikes! Turns out that FPU registers are only 32 bits wide, and doubles are
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stored in pairs, just like on the PowerPC!
2018-09-09 18:25:00 +02:00
David Given
ec46643124
Allow the ELF processor flags to be set. Generate MIPS ELF executables, not
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PowerPC ones.
2018-09-09 14:29:34 +02:00
David Given
5dfef6f180
Rework relocations again: add RELO2HI and RELO2HISAD for the high two bytes of
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a word.
2018-09-09 14:11:11 +02:00
David Given
95dd6f0141
Fix some niggling issues --- we have our first binary now!
2018-09-09 12:24:22 +02:00
David Given
b3b7c684c6
Simplify MIPS relocations. Add RELS2 (for generic high-word relocations). Add
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support for MIPS branch-and-jump relocations.
2018-09-09 12:23:59 +02:00
David Given
0d8d98fd0f
Warning fix.
2018-09-09 12:22:59 +02:00
David Given
d2a1d4dcda
Added some very untested csa and csb implementations, based on the PowerPC
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ones.
2018-09-08 23:12:57 +02:00
David Given
75308901bc
Added hi[] and lo[] functions to the assembler; fix things enough that we now
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get to the point of failing to link programs.
2018-09-08 22:42:06 +02:00
David Given
379c1a4a3c
Rework floating point conversion. Bash enough of the table into workingness
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that the libraries build now.
2018-09-08 22:06:38 +02:00
David Given
d2c14ca44f
Precisely one stack hreg gets allocated for each vreg/congruence group for
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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
David Given
b7a1c96986
MIPS appears to hate converting unsigneds to floats and vice versa.
2018-09-05 23:53:38 +02:00
David Given
fc0b0ae178
(Slightly) better errors on phi congruence group mismatches.
2018-09-05 23:53:08 +02:00
David Given
7fbce066f8
We attempt to compile the first library function; we fail.
2018-09-05 00:13:01 +02:00
David Given
26fe3f7530
Added library skeletons.
2018-09-05 00:07:07 +02:00
David Given
98afb42095
Added a boot.o based on the PowerPC one.
2018-09-05 00:00:13 +02:00
David Given
26c0228b14
The examples all compile now (probably incorrectly, and the libc doesn't
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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
83cf1be6a8
mcgg now checks that registers have at most one type attribute set.
2018-09-03 22:03:57 +02:00
David Given
f8e71d888b
Add some painfully untested FPU instructions.
2018-09-02 21:36:09 +02:00
