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David Given e7e29d34ff Add a test (currently failing) to check that Pascal char sets can store all 256 
possible values. Add the PowerPC ncg and mcg backend support to let the test
actually run, including modifying a bunch of PowrePC libem functions so that
they can be called from both ncg and mcg.
 2017-01-15 22:28:14 +01:00
David Given 1ea46f6afe Actually tell the user which tests failed. 2017-01-15 22:26:09 +01:00
David Given b63a4513d5 Add missing header. 2017-01-15 12:04:47 +01:00
David Given 9a346c382d Turns out Apple's hi16/ha16 exactly match my ha16/has16, so renamed 
accordingly. (Memo to self: read the docs *before* doing the work.)
 2017-01-15 11:59:33 +01:00
David Given f80acfe9f5 Signed vs unsigned lower halves of powerpc fixups are now handled by having two 
assembler directives, ha16() and has16(), for the upper half; has16() applies
the sign adjustment. .powerpcfixup is now gone, as we generate the relocation
in ha*() instead. Add special logic to the linker for undoing and redoing the
sign adjustment when reading/writing fixups. Tests still pass.
 2017-01-15 11:51:37 +01:00
David Given 14aab21204 Revert change; addis/ori requires different handling to addis/lwz due to ori's 
payload being unsigned while lwz's payload is signed.
 2017-01-15 10:31:20 +01:00
David Given 3c0bc205fc Update the hi/lo syntax to be a bit more standard. 2017-01-15 10:21:02 +01:00
David Given 8edbff9795 Add assembler support for fixing up arbitrary oris/addi pairs of instructions; 
this should allow oris/lwz constant value loads, which will save an opcode.
 2017-01-15 00:15:01 +01:00
David Given fd83b09c58 Fix typo. 2017-01-08 18:53:59 +01:00
David Given 612e14b4b4 Improve confusing error message when calling function procedures from a 
top-level statement.

Fixes: #30
 2017-01-08 11:25:57 +01:00
David Given ee5ef73dfb Run through clang-format. 2017-01-08 11:23:56 +01:00
David Given 62022c6f6b Don't print source file names during compilation (gcc stopped doing it years 
ago).
 2017-01-08 00:16:35 +01:00
David Given 4b7fc5e233 Run through clang-format. 2017-01-08 00:15:23 +01:00
David Given 11ea3a2fe1 Don't sort inludes any more (breaks too many ACK files). 2017-01-08 00:15:10 +01:00
David Given 51862cff82 Merge pull request #32 from dram/add-execve 
Add execve() system call for Linux
 2017-01-07 23:23:00 +01:00
David Given 893471a42e No longer truncate module names at 10 characters when constructing paths; 
rename some library modules to their full names.
 2017-01-07 23:00:52 +01:00
David Given d50a6f99de Run through clang-format. 2017-01-07 22:56:00 +01:00
David Given cca6171e55 Properly install man pages. 2017-01-07 22:38:30 +01:00
David Given 9945b019d2 Add a B man page. 2017-01-07 22:35:02 +01:00
David Given a7fa54e4e0 Update the README. 2017-01-07 20:11:01 +01:00
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