Commit graph

8090 commits

Author SHA1 Message Date
David Given 0aac9aafd3 Combine brk() with sbrk(); modify brk() to update the sbrk(0) value. 2016-11-23 22:04:21 +01:00
David Given 0b21f18d4c Merge pull request #14 from davidgiven/dtrg-experimental-mcgg
Merge mcg code generator to trunk
2016-11-23 21:58:31 +01:00
David Given 2367b011f5 Don't install qemu-system-ppc until openbios-ppc gets whitelisted by Travis. 2016-11-23 21:53:14 +01:00
George Koehler b6b707d9df Make working gettimeofday() for Mac OS X.
The system call puts the time in a pair of registers, not in the
timeval structure.  Add code to move the time to the structure, so
programs see the correct time, not garbage.  This fixes our example
programs that use the time as a random seed.
2016-11-23 13:25:55 -05:00
George Koehler 98f2273d97 Teach cvmach to emit the symbol table.
This preserves the name and value of every symbol.  The type and other
info of a symbol might be lost.  In gdb, one can now "disas main" or
"disas '.ret'" to disassemble functions by name.

Most symbols are in sections, so I also teach cvmach to emit the Mach
section headers.  The entry point in plat/osx*/descr moves down to
make room for the section headers and LC_SYMTAB.

I fix some bugs in calculations of cvmach.  They were wrong if ROM had
a greater alignment than TEXT, or if DATA did not start on a page
boundary.  I introduce machseg[] to simplify the mess of variables in
main().  I declare most functions as static.  Also, cvmach becomes the
first program to #include <object.h>.
2016-11-22 17:16:30 -05:00
George Koehler 19310d2521 Make possible to #include <object.h>.
This header declares functions in libobject.  Our programs never
included object.h, but called functions in libobject without declaring
them.  So, our build system never put object.h in the include path;
any #include <object.h> would fail to find the header.

With this commit, a program may #include <object.h> if it has
modules/src/object+lib in its deps.

Declare structs in object.h so we can use them in prototypes without
gcc warning, "'struct whatever' declared inside parameter list".

Remove inclusion of ansi.h from object.h.  Programs would need to
depend on modules+headers to get ansi.h in the include path.
2016-11-22 11:13:14 -05:00
David Given 6e9c2d5c0d Also call .trp .trap, for ncg compatibility. 2016-11-20 19:39:28 +01:00
David Given f8fa3ece42 inn on ncg now passes the CPU tests. 2016-11-20 19:35:34 +01:00
David Given 2d0bc7ef0d Finally fix the build system issue where ackprogram would try to explicitly
link all the language libraries.
2016-11-20 18:57:44 +01:00
George Koehler 88c2ea63aa Use uint32_t in util/led/main.c
This uses uint32_t for the base, file offset, and alignment of each
section, to be consistent with the usage of uint32_t in h/out.h

Also declare setbit() as static.
2016-11-20 11:38:16 -05:00
David Given 953c08839f inn works now; add a helper for it. 2016-11-20 12:53:44 +01:00
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 84c7b6ba90 No, sudo doesn't get openbios-ppc installed. I added a whitelisting request:
https://github.com/travis-ci/apt-package-whitelist/issues/3745
2016-11-20 10:36:30 +01:00
David Given 3f45a7d633 Need sudo to install openbios-ppc. 2016-11-20 10:09:58 +01:00
David Given 5423a175c6 Install openbios on Travis (needed by qemu-system-ppc). 2016-11-20 10:00:59 +01:00
George Koehler 6e31d46d6f Fix my typo to put symbol "begrom" in correct section. 2016-11-19 19:23:42 -05:00
David Given 454a7494bb cif8 and cuf8 work now. More tests. 2016-11-19 11:42:30 +01:00
David Given cc660b230f Floats and doubles are now written out correctly. 2016-11-19 11:39:13 +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 5208e5f751 Yet another OB1 stack format fix. 2016-11-19 10:42:22 +01:00
David Given a4616b7124 Betterer timeout handling. 2016-11-17 22:04:50 +01:00
David Given 43439c6d0c Remember to push the result of lor onto the stack. 2016-11-17 22:04:32 +01:00
David Given 745eb8f17b Now _errsym and _erlsym are defined in the standard library, don't define them
in the program.
2016-11-16 21:13:00 +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 81bc2c74c5 A bb's regsin are no longer the same as those of its first instruction;
occasionally the first hop of a block would try to rearrange its registers (due
to evicted throughs), resulting in the phi moves copying values into the wrong
registers.
2016-11-16 20:52:15 +01:00
David Given edfee33576 Cleanup; the test driver is now way more robust. 2016-11-16 20:50:14 +01:00
David Given 581fa4a457 Reenable eviction of corrupted registers, which had been broken by a previous
change. Change the register move code to get swaps right, or at least righter.
2016-11-15 21:55:10 +01:00
David Given 86c832ef86 Put saved registers in *actually* the write place. I hope. 2016-11-15 21:54:15 +01:00
David Given cc686ded62 Get subtractions the right way round. 2016-11-15 20:25:11 +01:00
George Koehler 486c516242 Stop trying to remove core dumps.
unlink("core") doesn't work with OpenBSD, where core dumps have names
like "ncg.core".  Users who don't want core dumps can turn them off
with "ulimit -c 0" in sh(1).  Then the system doesn't write a core
dump.  That's better than writing core then unlinking it.
2016-11-15 11:58:13 -05:00
George Koehler 07b04c64c8 Let ack(1) compile files with non-ASCII names.
This commit changes how ack(1) parses backslashes in its descr files.
Before this commit, ack set the high bit of each character escaped by
a backslash, and later cleared all high bits in command arguments, but
this lost the high bits in non-ASCII filenames.  After this commit,
ack keeps backslashes in strings while processing them.  Functions
scanvars(), scanexpr(), doassign(), unravel(), addargs() now
understand backslashes.  I remove from ack_basename() the warning
about non-ASCII characters.

This commit makes some incompatible changes for backslashes in descr
files.  None of our descr files uses backslashes, except for those
backslashes that continue lines, and there are no changes for those
backslashes.  The problem with non-ASCII filenames had its cause in a
feature that we weren't using.

With this commit, ack now understands backslashes after the = sign in
both "var NAME=value" and "mapflag -flag NAME=value".  Before, ack
never scanned backslashes in "var" lines, so "var A=\{B}" failed to
prevent expansion of B.  Now it does.  Before, ack did scan for
backslashes in the "-flag NAME=" part of "mapflag" lines.  Now it
doesn't, so it is no longer possible to map a flag that contains a
literal space, tab, or star "*".

I removed the expansion of "{{" to "{".  One can use "\{" for a
literal "{", and "\{" now works in "var" lines.  Before and now, ack
never expanded "{" in flags for "mapflag", so the correct way to map a
literal flag "-{" remains "mapflag -{ ...", not "mapflag -{{ ...".
(The other way "mapflag -\{ ..." stops working with this commit.)

Backslashes in strange places, like "{NA\ME}", probably have different
behavior now.

Backslashes in "program" lines now work.  Before, ack scanned for
backslashes there but forgot to clear the high bits later.

Escaping < or > as \< or \> now works, and prevents substitution of
the input or output file paths.  Before, ack only expanded the first <
or > in each argument.  Now, it expands every unescaped < or > in an
argument, but this is an accident of how I rewrote the code.  I don't
suggest to put more than one each of < or > in a command.  The code no
longer optimizes away its recursive calls when the argument is "<".

The code continues to set or clear the high bit NO_SCAN on the first
characters of flags.  This doesn't seem to be a problem, because flags
usually begin with an ASCII hyphen '-'.
2016-11-15 11:33:35 -05:00
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 0289b1004e Allow values left on the stack at the end of the procedure (it's legal!). 2016-11-14 21:47:49 +01:00
David Given 408b69b17d aelflod and aslod now default to not showing the memory dump. 2016-11-13 20:50:23 +01:00
George Koehler fafc8a0b8a Don't retry fork() in a loop.
If fork() fails, then report a fatal error.  Don't spin the cpu
retrying fork() until it succeeds.  It can fail when we reach a limit
on the number of processes.  Spinning on the cpu would slow down other
processes when we want them to exit.  This would get bad if we had a
parallel build with multiple ack processes spinning.
2016-11-13 12:45:01 -05:00
George Koehler e617f42503 Don't print a string after possibly freeing it.
new= newvar(name) takes ownership of the string and might free its
memory.  Don't print name.  Do print new->v_name.

Also #include <string.h> for strcmp().
2016-11-13 12:02:35 -05:00
David Given 91c15c1c63 Precise's qemu package is qemu-system. 2016-11-13 14:20:14 +01:00
David Given 1ef4780af4 Typo fix. 2016-11-13 14:17:38 +01:00
David Given 0699e7af97 Attempt to enable the qemuppc tests on Travis. 2016-11-13 14:10:44 +01:00
David Given e7132183fb Fix buffer overrun: if LABEL_STARTER is seen but LABEL_TERMINATOR is not, the
label parser will keep going forever looking for the end of the label. It now
stops at the end of the string.
2016-11-13 14:04:58 +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 e9fe1d70a6 Fix (or at least, work around) an issue with library order. Make sure the Basic
error symbols are actually defined.
2016-11-13 13:28:09 +01:00
George Koehler 65278bc9a9 In util/ack, add prototypes and static to functions.
Declare most functions before using them.  I declare some functions in
ack.h and some in trans.h (because trans.h declares type trf).  I
leave declarations of scanb() and scanvars() in .c files because they
need type growstring.  (I can't #include "grows.h" in another header
file as long as grows.h doesn't guard against multiple inclusion.)

Functions used within one file become static.  I remove a few tiny
functions.  I move a few functions or declarations to more convenient
places.  Some functions now return void instead of a garbage int.

I feel that keyword "register" is obsolete, so I removed it from where
I was editing.  This commit doesn't touch mktables.c
2016-11-12 21:12:45 -05:00
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