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
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
David Given
1d6ecddcf4
The MIPS backend is still full of holes, and cut-and-pasted PowerPC code, but
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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
4741ed8e14
Add a completely non-tested table-based MIPS assembler.
2018-09-01 19:35:31 +02:00
David Given
8d321900b4
Merge pull request #110 from davidgiven/dtrg-warnings
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Fix warnings and convert the Modula-2 library to ANSI C.
2018-06-25 22:29:47 +02:00
David Given
7971bdba5a
Warning-fixed and ansified the Modula-2 library.
2018-06-25 22:22:37 +02:00
David Given
f8ba7ef962
Move the Modula-2 library includes into a directory in lang/m2 where they belong.
2018-06-24 20:32:59 +02:00
David Given
aa19c08512
Merge pull request #109 from davidgiven/dtrg-warnings
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Rework the Linux include directories.
2018-06-24 20:03:21 +02:00
David Given
ab7002c0ee
All the Linux include directories are the same, so common them all out into a
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single one, like OSX.
2018-06-24 19:57:43 +02:00
David Given
47bdd9cc49
Merge pull request #108 from davidgiven/dtrg-warnings
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Warning-fix and protoise the basic library.
2018-06-24 01:00:30 +02:00
David Given
1702d873ea
Warning-fix and protoise the basic library.
2018-06-24 00:35:51 +02:00
David Given
a6742a7d55
Merge pull request #107 from davidgiven/dtrg-libc
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OpenBSD fixes
2018-06-24 00:21:29 +02:00
David Given
bbb98240fe
Merge from trunk.
2018-06-24 00:08:39 +02:00
David Given
f45b357740
Remove the dependency on the glibc-only byteswap.h.
2018-06-24 00:01:06 +02:00
David Given
1fc20e90c0
Remove c99-isms.
2018-06-23 23:56:34 +02:00
David Given
205c8d0a35
Run through clang-format.
2018-06-23 23:46:44 +02:00
David Given
91a978fa95
Merge pull request #106 from davidgiven/dtrg-libc
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Refactor the libc
2018-06-23 23:28:21 +02:00
David Given
fd94e219d4
Remove the attic.
2018-06-23 23:16:22 +02:00
David Given
59dbdea48a
Move mktemp to sys; attic getgrent as noone will ever use this.
2018-06-23 23:15:42 +02:00
David Given
3f10299f43
Move the portable time code into core. clock() goes into sys (as it calls
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times()).
2018-06-23 19:49:29 +02:00
David Given
64ae1d7583
Move time() into sys; change the name of the variable which controls it.
2018-06-23 19:40:50 +02:00
David Given
bb78fd158c
Move the big gnarly functions like system() and popen() into sys, and make them
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build.
2018-06-23 19:18:16 +02:00
David Given
6a729b846a
Move stdio into (mostly) sys.
2018-06-23 18:54:40 +02:00
David Given
af22b7ea85
Change stdio to use atexit() rather than the internal __clean variable; this
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breaks the dependency between exit/atexit and stdio. Buffers are no longer
flushed on abort() (because it's pretty risky). Move the relevant functions
into sys/core.
2018-06-23 18:35:45 +02:00
David Given
f744a21699
All the opendir()/readdir() stuff is obsolete because it's all implemented in
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terms of open() and read(), which isn't how it's done any more; move the
functions into an attic.
2018-06-23 18:25:26 +02:00
David Given
df1cdf7762
Add the sys directory for libc functions which use system calls; move the
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malloc functions in there.
2018-06-23 18:08:03 +02:00
David Given
c4e4505a73
Move the errno functions into core.
2018-06-23 17:52:15 +02:00
David Given
538eefb573
Get em22 working. Remove the leading-underscore system calls from its libsys.
2018-06-23 15:57:57 +02:00
