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Author SHA1 Message Date
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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
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
David Given
a023fd8591 Better error reporting for unterminated strings. 2018-09-02 18:55:44 +02:00
David Given
2eaca39322
Merge pull request #120 from davidgiven/dtrg-no 
Remove the built-in preprocessor in cemcom.ansi
 2018-09-02 13:15:11 +02:00
David Given
b76352de99 Remove stray #include. 2018-09-02 12:54:53 +02:00
David Given
cb983fac44 Rip out the built-in preprocessor from cemcom.ansi, now it's no longer used. 2018-09-02 12:50:50 +02:00
David Given
6931ffa5a4 Disable the built-in preprocessor in cemcom.ansi; the external preprocessor is 
always run. Fix a bug in block skipping in the preprocessor.
 2018-09-02 12:39:00 +02:00
David Given
f8fc5bc3d8 Implement single-line C++-style comments. 
Fixes: #118
 2018-09-02 12:14:59 +02:00
David Given
0e9736fdca Run through clang-format before editing. 2018-09-02 12:04:33 +02:00
David Given
274ed3cb6a Run through clang-format before editing. 2018-09-02 11:49:40 +02:00