2 Commits

Author	SHA1	Message	Date
Levi Cameron	0921310ca5	More work on the bytecode interpreter. ... With these changes, it now passes all tests/general/* test cases except those with floats. Changes to the compiler: - Added extra argument to test instruction (string comparisons were being treated as integer comparisons; properly deals with different atomic type unifications now) - Changed bytecode stub functions Changes to the bytecode interpreter: - Cleaned up comments - Forked part of mb_machine to mb_exec - Added support for submodules - Added support for nondet procedures - Added support for cc_xxx procedures - Finished higher order calls - Added (very basic) debug interface - Added support for type information - Added memory corruption checking - Changed machine state dump formatting - Fixed bug in nested switches - Resolved builtin__unify and builtin_compare failures - Modified bytecode tags generation so .c & .m tag files are separate - Header usage rationalised Changes to test suite: - Added test cases for the bytecode interpreter. - More work on the bytecode interpreter. bytecode/Mmakefile: Modified bytecode tags generation so .c & .m tag files are separate. mb_machine split into mb_exec. test file renamed to simple.m (copy over tests/simple??.m to test). bytecode/TODO: Updated. bytecode/mb_basetypes.h: Removed redundant MB_WORD_BITS (use MR_WORDBITS instead). bytecode/mb_bytecode.h: bytecode/mpb_bytecode.c: Formatting changes Third test instruction argument added. bytecode/mb_disasm.h: bytecode/mb_disasm.c: Formatting changes. Third test instruction argument added. Added MB_FMT_INTWIDE. bytecode/mb_exec.h: bytecode/mb_exec.c: bytecode/mb_machine.h: bytecode/mb_machine.c: mb_machine* split into mb_exec* and mb_machine*. Almost all instructions now work (see important changes above). bytecode/mb_interface.h: bytecode/mb_interface.c: Added nondet stub functions. Added functions to lookup builtin compiler procedures: do_redo, do_fail, __unify, __compare. Removed old debugging code. Stack layout changed to support nondet procedures. bytecode/mb_interface_stub.c: bytecode/mb_interface_stub.h: Split off bare minimum of includes for bytecode stubs. Added nondet stubs. bytecode/mb_machine_show.c: Made code cleaner (added subfunctions for MB_show_state). Added variable names to machine state dump. bytecode/mb_mem.h: bytecode/mb_mem.c: Added limited memory corruption checking. bytecode/mb_module.h: bytecode/mb_module.c: Swapped order of temps & vars on stack. Fixed nested switches causing random crashes. Added nested module support. bytecode/test/simple??.m: Various test files - just to check that it doesn't crash. (Most do not output anything & must be verified by stepping through manually). compiler/bytecode.m: compiler/bytecode_gen.m: Added extra argument to test instruction (otherwise string comparisons would be treated as integer comparisons). compiler/code_gen.m: Changed call structure name in bytecode stub to resolve issues with illegal characters in C structure names. Changed bytecode stub header file name.	2001-02-19 02:05:59 +00:00
Levi Cameron	49438027b7	Major changes to bytecode interpreter. ... Estimated hours taken: 200 Major changes to bytecode interpreter. Beginnings of native code integration bytecode/bytecode.c: bytecode/bytecode.h: bytecode/dict.c: bytecode/dict.h: bytecode/disasm.c: bytecode/disasm.h: bytecode/machine.c: bytecode/machine.h: bytecode/mbi_main.c: bytecode/mdb.m: bytecode/mem.c: bytecode/mem.h: bytecode/slist.c: bytecode/slist.h: bytecode/template.c: bytecode/template.h: bytecode/util.c: bytecode/util.h: Removed. These are all the old bytecode files from before I started. Any parts that were useful have already been salvaged and used in the new interpreter. bytecode/*: Added MB_Bytecode_Addr and MB_Native_Addr types to remove abiguity as to what type of code an instruction pointer points to, and provide compiler help for erroneously mixing pointer types. bytecode/Mmakefile: bytecode/Mmake.params: Makefile for test bytecode program. Note that any library functions that are called from bytecode must be compiled with trace information. (So their entry labels can be looked up) bytecode/mb_basetypes.h: Added. Contains basic type definitions. bytecode/mb_bytecode.c: bytecode/mb_bytecode.h: Better error messages. Changed var_lists to direct pointers rather than lookups through data stacks (much simpler but stop you using realloc() on the bytecode argument data) Label addresses are computed at module load time rather than being looked up each jump Added endof_negation_goal Temporary stack slot numbers are translated to variable numbers (now there is no distinction between temps & vars) MB_read_cstring return value convention changed (see comments for how to now free the returned memory) Added distinction between functions and predicates Added enter_else Code addresses are all pointers rather than simple ints Added MB_Code_Addr type for pred_const and call instructions bytecode/mb_disasm.c: bytecode/mb_disasm.h: Added endof_negation_goal & enter_else Output strings are now easier to read MB_listing does not display anything for invalid addresses MB_listing takes line length argument bytecode/mb_interface.c: bytecode/mb_interface.h: bytecode/mb_interface_stub.m: Interfacing between native/bytecode bytecode/mb_machine.c: bytecode/mb_machine.h: bytecode/mb_machine_def.h: Large sections of code branched off into mb_module.? Most instructions completed, but not integrated with native code. Most of mb_machine_def has been removed as the native code functions provide the same functionality. bytecode/mb_machine_show.c: bytecode/mb_machine_show.h: Completely changed. Less information now as a lot of what was being displayed before cannot be determined as easily now that it is stored in the mercury runtime. bytecode/mb_mem.c: bytecode/mb_mem.h: Added routines for garbage collected memory bytecode/mb_module.c: bytecode/mb_module.h: Loading & accessing bytecode. Argument data indexes & id are now stored in a single word. (see MB_BCID_xxx macros). Call & label addresses are now calculated at load time. bytecode/mb_stack.c: bytecode/mb_stack.h: Added options for garbage collection of MB_Stack memory bytecode/mb_util.c: bytecode/mb_util.h: Miscellaneous string functions added and SAY() for debugging bytecode/simple01.m: Added. Simple test program. (replace with whatever program is being tested at the time).	2001-02-01 05:20:32 +00:00