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Author SHA1 Message Date
David Given 837b9622fb Make sure that constant folding doesn't render our tests trivial. 2017-01-07 19:53:57 +01:00
David Given abbead482a Sections are now aligned (required by the EM spec). 2017-01-07 18:47:46 +01:00
David Given efab08178b Fix a bunch of issues with pushing and popping mismatched sizes, which the B 
compiler does a lot; dup 8 for pairs of words is now optimised.
 2017-01-07 18:47:00 +01:00
David Given 5a38ce2a69 Pre-and-post-modification operators now work substantially better (i.e., 
working).
 2017-01-07 18:46:03 +01:00
David Given 39215c131e Moved the inc/dec operator tests into their own source file; more exhaustive 
testing.
 2017-01-07 18:38:43 +01:00
David Given 6b4f8d72b8 ine and ste are now declared to modify memory (preventing cached values being 
propagated across the modification).
 2017-01-07 13:25:09 +01:00
David Given 7710c76d56 Introduce sequence points before store instructions to prevent loads from the 
same address being delayed until after the store (at which point they'll return
the wrong value).
 2017-01-07 13:17:39 +01:00
David Given 0da248dced Use a better NOT; and after remembering that PowerPC bit numbers are all 
backwards in the documentation, rewrote IFEQ/IFLT/IFLE to actually work.
Probably. Thanks to the B test suite for spotting this.
 2017-01-07 01:03:15 +01:00
David Given 77fc62285d Extern variables can now be written to. 2017-01-06 23:24:05 +01:00
David Given 73922f1d16 Ensure that procedure labels are word-aligned. 2017-01-06 22:29:52 +01:00
Xin Wang 24d26b2826 Add execve() system call for Linux 2017-01-06 18:33:52 +08:00
David Given 72766a02de Fix typo in the descr file which was stopping -B from working. Add B 
documentation to the ack man page.
 2017-01-04 13:28:40 +00:00
David Given aeb9d4952d Added an abmodules tool which detects B modules and generates an initialiser 
function for them (in C, unfortunately).
 2017-01-03 18:54:13 +00:00
David Given e2751f76b5 Add a control flow test. 2017-01-01 23:51:48 +00:00
David Given 62bc2ab97a Jump tables for switch now go in ROM (required by the EM spec). Forward gotos 
now work.
 2017-01-01 23:28:41 +00:00
David Given 8b8910595a Add proper support for negative constants in external initialisers. 2017-01-01 17:56:53 +00:00
David Given 049aff9f33 Remove the negative-constant code from the compiler; I think it's going to 
break a=-1 (with no spaces). Backed out changeset dead3363ac7d.
 2017-01-01 17:44:55 +00:00
David Given be909fe045 Add tests for more operators. 2017-01-01 17:44:03 +00:00
David Given 374e7a1c57 Add support for the ~ operator. 2017-01-01 17:40:06 +00:00
David Given b1576e2c77 Add support for negative constants in external initialisers. 2016-12-31 19:43:03 +00:00
David Given a01523a893 Allow programs to override binit() (so they can register their own modules). 2016-12-31 17:39:51 +00:00
David Given 1beedca590 Add support for B tests; add a test for the B operators (finding several 
compiler bugs in the process).
 2016-12-31 17:38:52 +00:00
David Given 803b81e3f4 Add support for the xor operator. 2016-12-31 17:36:12 +00:00
David Given c3e1ef1064 B patch table names shouldn't be in the B symbol namespace. 2016-12-31 00:14:28 +00:00
David Given fa02a855e8 Fix issue where !x was actually calculating !!x. 2016-12-31 00:14:04 +00:00
David Given 462529a7d2 Trying to install openbios-ppc causes Travis to error out now (not sure why). 2016-12-29 17:30:47 +00:00
David Given e460adc923 Add a B version of the hilo program. 2016-12-29 17:20:51 +00:00
David Given 4e68af9781 Add a declaration for the -Bxyz module name flag, used by the B compiler. 
Rename some of the Basic flags to avoid confusion.
 2016-12-29 17:12:40 +00:00
David Given 0e10329876 Fix an issue throughout where B couldn't be built by ackprogram due to symbol 
laziness.
 2016-12-29 17:11:53 +00:00
David Given a43258fe9d Build the B compiler and standard library (also the Basic one, which was 
missing).
 2016-12-29 17:11:07 +00:00
David Given ebd424e7f1 First draft of the B module code; a module name can now be specified as a 
compiler flag, which is used to set the name of the patch table. The compiler
now understands C preprocessor line directives. Extend the standard library
somewhat.
 2016-12-29 17:10:21 +00:00
David Given e3f8fb84dc Change the i80 assembler to be three-pass, which allows forward references; 
required for assembling B.
 2016-12-29 17:08:53 +00:00
David Given 52f82a76b6 Don't crash when using the -u option to enter undefined symbols. 2016-12-28 23:49:55 +00:00
David Given 49dd5724ca Correctly export PREFIX to the Lua build system. 2016-12-28 19:16:15 +00:00
David Given 3cdceaa700 Merge in B changes. 2016-12-28 17:30:14 +00:00
David Given e50f4be710 Merge from default. 2016-12-26 19:44:48 +00:00
David Given decf0f5e9c Merge pull request #29 from kernigh/pr-elf-symbol 
ELF symbol table from aelflod
 2016-12-14 22:30:44 +01:00
George Koehler 7e39a821f4 Update aelflod.1 to describe options, mention symbol table. 2016-12-13 17:22:45 -05:00
George Koehler 5cf2a68438 Teach aelflod to write the ELF symbol table. 
Convert each ack.out symbol to ELF, preserving its name and value, and
some but not all other symbol info.  The ELF symbol table comes with
ELF section headers.  If the input file has no symbols (ack -Rled-s),
then the output file has no ELF section headers.

Append the symbol table and section headers to the ELF file.  Linux
ignores this appended info when it execs the file.  The info might
pollute the last page of the ELF segment, but Linux clears this
pollution.  Tools like nm and gdb can read the ELF symbol table.

I include code to translate debugger symbols to an ELF .stab section.
I did not test this code, because I did not find a platform that can
put S_STB symbols in the ack.out file.
 2016-12-13 16:41:22 -05:00
George Koehler 8280ca8745 In aslod, remove some unused m68k2 stuff. 2016-12-13 16:02:38 -05:00
George Koehler 2874806048 Tweak man syntax in aelflod.1 and aslod.1 
Put end of sentence at end of line.  This is roff(7) syntax so the
formatter can make spacing between sentences.

Use the macro .PP to break paragraphs.  Use bold for the command name
in SYNOPSIS, to match other ack manuals.
 2016-12-13 15:54:38 -05:00
David Given 0e020132f8 Fix a warning. 2016-12-12 21:17:01 +01:00
David Given 04e54d6cb1 Run lang/basic/lib through clang-format. 2016-12-12 21:16:32 +01:00
David Given a53b51001b Ansify function definitions. 2016-12-12 21:15:25 +01:00
David Given bf2e0be69a Merge pull request #27 from kernigh/pr-qemu-doze 
Teach qemuppc to halt the cpu on _exit().
 2016-12-11 23:17:12 +01:00
David Given 62edb90641 Convert the inn test to work with the test library and not import InOut; it now 
runs on qemuppc again. Reenable qemuppc tests.
 2016-12-11 23:06:37 +01:00
David Given 65fdb03231 Merge pull request #28 from kernigh/pr-set-ppc 
add Modula-2 set operations to PowerPC ncg
 2016-12-11 22:25:04 +01:00
George Koehler 8605a2fcfc Add Modula-2 set operations to PowerPC ncg. 
This provides and, ior, xor, com, zer, set, cms when defined($1) and
ior, set when !defined($1).  I don't provide the other operations
!defined($1) because our Modula-2 compiler hasn't used them.

I wrote a Modula-2 example in
https://gist.github.com/kernigh/add79662bb3c63ffb7c46d01dc8ae788

Put a dummy comment in mach/powerpc/libem/build.lua so git checkout
will touch that file.  Without the touch, the build system doesn't see
the new *.s files.
 2016-12-10 12:23:07 -05:00
George Koehler fcda786fe9 Add some missing clauses to los, sts, aar, inn, cmi, cmu. 
We only implement 'los 4', 'sts 4', 'cmi 4', 'cmu 4', not for sizes
other than 4.  Add clause $1==4.

We only implement inn when defined($1).

The rule for aar needs 'kills ALL' because it kills many registers,
like other rules that call libem.
 2016-12-09 19:49:50 -05:00
George Koehler 436114fce4 Add a move from CONST smalls(%val) to GPR. 
This allows 'move {CONST, $1}, R3' with a small enough $1 to emit one
instruction (addi) instead of two instructions (addis, ori).  The
CONST token confusingly isn't in the CONST_ALL set.
 2016-12-09 18:40:14 -05:00