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Author SHA1 Message Date
David Given
196fa914b3 lxa now works, I hope; traps are better (and stubbed out on qemuppc). 2016-11-20 11:57:21 +01:00
David Given
d5328492d7 Better handling of float conversions; more tests; converting to unsigned ints 
works now.
 2016-11-20 11:27:40 +01:00
David Given
132baac78a Add some more tests. 2016-11-20 10:46:53 +01:00
David Given
454a7494bb cif8 and cuf8 work now. More tests. 2016-11-19 11:42:30 +01:00
David Given
db3564f35a Use .hol0 as an additional name for hol0; mcg requires it. 2016-11-19 11:09:07 +01:00
David Given
d31bc6a3f9 Made csa and csb work with mcg; adjust the libem functions and the 
corresponding invocation in the ncg table so the same helpers can be used for
both mcg and ncg. Add a new IR opcode, FARJUMP, which jumps to a helper
function but saves volatile registers.
 2016-11-19 10:55:41 +01:00
David Given
a4616b7124 Betterer timeout handling. 2016-11-17 22:04:50 +01:00
David Given
c25ad82a89 Tests can now specify (via a hacky filename suffix) which runtime they want. 2016-11-16 21:08:03 +01:00
David Given
71e6ca26d5 Add another test. 2016-11-16 20:56:45 +01:00
David Given
edfee33576 Cleanup; the test driver is now way more robust. 2016-11-16 20:50:14 +01:00
David Given
cc686ded62 Get subtractions the right way round. 2016-11-15 20:25:11 +01:00
David Given
5e8babf098 Add a basic integer shift test. 2016-11-14 22:12:13 +01:00
David Given
c6bce0aaee Add basic integer comparison test. 2016-11-14 22:01:25 +01:00
David Given
6a4f465f53 Add a rather bodged test framework for the qemuppc plat, which only runs if the 
qemu-system-ppc emulator is installed.
 2016-11-13 13:37:22 +01:00
David Given
f52cb45e49 Add just enough Open Firmware support for an output console. 2016-11-12 22:09:54 +01:00
David Given
48e74f46fc Add the very experimental qemuppc plat, intended to generate minimal images 
which can be emulated using qemu (for, hopefully, a test suite). Currently it
generates images which won't run because there's no RAM.
 2016-11-12 19:20:58 +01:00
David Given
8c3670483f Get top working with the PowerPC; use it to eliminate useless branches and 
moves.
 2016-10-29 23:37:11 +02:00
David Given
a8c4dac67c Merge from default (merging in George Koehler's PowerPC changes). 2016-10-29 22:40:40 +02:00
David Given
5f0164db62 Bolt mcg into the PowerPC backend. It doesn't build yet, but it is generating 
*some* code.
 2016-10-17 00:06:06 +02:00
David Given
d539389e81 Merge in the unfinished PowerPC branch. 2016-10-16 22:38:27 +02:00
George Koehler
9017ba9dea Merge branch 'default' into kernigh-linuxppc 2016-09-30 13:55:06 -04:00
George Koehler
ce5faba919 Remove .linenumber and .filename; use hol0 and hol0+4. 
We need this because some .e files in lang/ are using 'loe 0' and 'lae
4' to load the line number from hol0 and filename from hol0+4.
 2016-09-30 13:40:36 -04:00
George Koehler
b427d33f9f Define the begdata, begrom, begbss symbols for linuxppc. 
I copied the definitions from linux386 and linux68k.

This change also moves _errno and the other common symbols in boot.s
from .text to .bss.  Common symbols belong in .bss, but the assembler
seems dumb enough to put them in any section.
 2016-09-30 13:21:42 -04:00
George Koehler
865ef629dd Multiple tweaks to plat/linuxppc/descr 
Don't define __POWERPC.  I don't know any other compiler that defines
__POWERPC and don't want to invent a new macro.  Apple's gcc 4.0.1
from Xcode 2.5 defines __ppc__, _ARCH_PPC, __POWERPC__.  Debian's gcc
4.9.2-10 defines _ARCH_PPC, __PPC__, __powerpc__, __PPC, __powerpc,
PPC, powerpc.

Move the base vm address from 0x80000000 down to 0x10000000, as this
is where Debian loads /bin/true.  This is still higher than the base
addresses for linux386 and linux68k.

Sync led's arguments with linux386.
 2016-09-21 16:26:30 -04:00
George Koehler
f6dc6f6875 Implement isatty() for Linux. 
If it understands TIOCGETD, then it is a tty, else it isn't one.  This
seems to help Basic's input statement so I can see the prompt before
I enter my input.
 2016-09-20 21:28:37 -04:00
George Koehler
5b69777647 Rename our pseudo-opcode 'la' to 'li32'. 
GNU as has "la %r4,8(%r3)" as an alias for "addi %r4,%r3,8", meaning
to load the address of the thing at 8(%r3).  Our 'la', now 'li32',
makes an addis/ori pair to load an immediate 32-bit value.  For
example, "li32 r4,23456789" loads a big number.
 2016-09-18 17:03:23 -04:00
David Given
80cb6ba927 Eliminate the RELOH2 relocation, as it never worked --- the address would be 
calculated incorrectly because of overflow errors.

Replace it with an extended RELOPPC relocation which understands addis/ori
pairs; add an la pseudoop to the assembler which generates these and the
appropriate relocation. Make good.

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-17 12:43:15 +02:00
David Given
45a950571d Mostly add support for the experimental and largely broken linuxppc platform. 
(Doesn't quite build.)

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-15 23:12:03 +02:00
David Given
8c94b1316c Add unlink system call. 2016-09-04 19:23:02 +02:00
David Given
f67c98e239 Distributions are a pain --- let's not bother any more. Instead, we just tag 
the repository and download a complete snapshot, old and ancient stuff and all.
 2016-09-02 23:00:38 +02:00
David Given
612e38f1c6 Remove the old make-based build system, plus some big chunks of horribly 
obsolete protomake build system.
 2016-09-02 22:17:51 +02:00
David Given
5bae29a00c ego now builds and is used. 
This needed lots of refactoring to ego --- not all platforms have ego descr
files, and ego will just crash if you invoke it without one. I think originally
it was never intended that these platforms would be used at -O2 or above.

Plats now only specify the ego descr file if they have one.
 2016-08-21 22:01:19 +02:00
David Given
1a7b4f8729 Build the examples when doing a normal build; this exercises the compiler as a 
whole and is one step further towards a proper test suite.
 2016-08-20 14:05:24 +02:00
David Given
edee22510b liblinux is no more; its files are now in libsys. 2016-08-20 14:03:49 +02:00
David Given
52eaf753b6 rpi has a time() function; don't try to call gettimeofday(). 2016-08-20 14:03:19 +02:00
David Given
204f932ed2 Raspberry Pi backend now builds. 2016-08-20 12:40:13 +02:00
David Given
420c47c386 Fix dependency error (only shows up with make, not ninja. Odd). 2016-08-15 00:46:43 +02:00
David Given
38fa6941d5 linux68k builds now. 2016-08-14 11:34:18 +02:00
David Given
3df4906d52 Turns out I wasn't building the syscall libraries. Do so. 2016-08-14 11:23:57 +02:00
David Given
b549980af2 Wasn't exporting the plat headers; refactor to make this a little cleaner. 2016-08-14 11:01:36 +02:00
David Given
f253b6a169 linux386 builds. Also, forgot to turn back on the language runtimes. 2016-08-14 10:37:55 +02:00
David Given
262c5fedcf Biggish refactor to break cycles; my build rules were full of them. cpm builds, 
which requires top and topgen.
 2016-08-14 01:39:40 +02:00
David Given
e0b8bd221d Pascal runtime library now builds. 2016-08-13 13:07:19 +02:00
David Given
e770d09dc8 Pascal compiler builds. 2016-08-13 13:03:06 +02:00
David Given
00c67fcc0e Modula-2 runtime library now builds. 2016-08-13 12:43:44 +02:00
David Given
08b7c4aaae The Basic runtime builds now. 2016-08-12 00:24:40 +02:00
David Given
7c60c27302 The Basic compiler works now. 2016-08-12 00:19:51 +02:00
David Given
3ce4e53aa9 Most of libc builds now (missing malloc). 2016-08-08 23:55:47 +02:00
David Given
0d77cb8279 We can build our first C file. 2016-08-07 21:56:53 +02:00
David Given
5e84be70fd Massive ackbuilder refactor --- cleaner and more expressive. Lists 
are automatically flattened (leading to better build files), and the
list and filename functions are vastly more orthogonal.
 2016-08-04 23:51:19 +02:00