603b4b1c3186cfe3ea0126a4aea113ca5e571ba9 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/df6970d33a1331a7270d73e7608403d5dab308fb df6970d33a1331a7270d73e7608403d5dab308fb 2009-12-08T21:52:14-08:00 2009-12-08T21:52:14-08:00 Fix off-by-one displaying instruction profiles. e2dc90150f8d132f6f713801a9c6d65f296ae43c Nelson Elhage nelhage@mit.edu 5b81f290bd5cb2cf2a432219a005cf03df91e07a Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/603b4b1c3186cfe3ea0126a4aea113ca5e571ba9 603b4b1c3186cfe3ea0126a4aea113ca5e571ba9 2009-11-10T20:34:08-08:00 2009-11-10T20:34:08-08:00 Call console_close using atexit(). This helps ensure we clean up the tty in case we panic() for some reason. 58605c1f924eaf7d072975bd5610acc3a523db80 Nelson Elhage nelhage@mit.edu da53011974959bef51d0e5b921408666b84f90ad Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/5b81f290bd5cb2cf2a432219a005cf03df91e07a 5b81f290bd5cb2cf2a432219a005cf03df91e07a 2009-11-09T18:24:10-08:00 2009-11-09T18:24:10-08:00 Clean up some comments slightly. 277d56443606fc8ac462e5cab44b6b13078e6078 Nelson Elhage nelhage@mit.edu 12ef7d6f0e3e4feb18cad80e164d6f1bbf062eca Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/da53011974959bef51d0e5b921408666b84f90ad da53011974959bef51d0e5b921408666b84f90ad 2009-11-09T17:44:10-08:00 2009-11-09T17:44:10-08:00 Bubblesort test case. 66b3b3f52fa92ad15cdb29ee52594da1b286739c Nelson Elhage nelhage@mit.edu 7af177916584be5aec715a4a562a827ebd11fa4d Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/12ef7d6f0e3e4feb18cad80e164d6f1bbf062eca 12ef7d6f0e3e4feb18cad80e164d6f1bbf062eca 2009-11-08T19:46:59-08:00 2009-11-08T19:46:59-08:00 Attempt to shut the CPU down cleanly on a SIGINT. 4c6d7d1d342b3d478149fb1db4cf381ba9dd2eee Nelson Elhage nelhage@mit.edu e3d951ac8f73b3baa5680e0fa470bd8031e77eca Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/7af177916584be5aec715a4a562a827ebd11fa4d 7af177916584be5aec715a4a562a827ebd11fa4d 2009-11-08T19:40:50-08:00 2009-11-08T19:40:50-08:00 Add support for profiling the executed program by opcode. 7dc5755975eb70932f4a5c7c76e8fdeb186d95b4 Nelson Elhage nelhage@mit.edu 3f18e505143f84cfdcc8f5325622a2c56ac4824b Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/e3d951ac8f73b3baa5680e0fa470bd8031e77eca e3d951ac8f73b3baa5680e0fa470bd8031e77eca 2009-11-07T12:30:19-08:00 2009-11-07T12:28:24-08:00 Document inline JMP target caching. a7cdfcb1bdbdb478427231872ee229ed41d8c157 Nelson Elhage nelhage@mit.edu c142b33663aab6336e486dea32f563a1db8d348b Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/3f18e505143f84cfdcc8f5325622a2c56ac4824b 3f18e505143f84cfdcc8f5325622a2c56ac4824b 2009-11-07T12:30:19-08:00 2009-11-07T12:14:39-08:00 Skip the (PC == %eax) check in most frags. Generate the pc-checking prologue for every frag, but store a pointer immediately after the check as the code buffer in the frag cache, causing us to skip it most of the time. Give bt_translate_and_run an additional 'exact' parameter, which indicates whether it should chain to the start of a cfrag, or to the PC-checking prologue, and add a new bt_continue_ic, which is like bt_continue_chain but unsets the 'exact' flag. 595dedea602765775178b2cf4b52575726ffb680 Nelson Elhage nelhage@mit.edu 818a6d66c613b83bcb9511aad4241dd8b59dfff7 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/c142b33663aab6336e486dea32f563a1db8d348b c142b33663aab6336e486dea32f563a1db8d348b 2009-11-07T12:30:19-08:00 2009-11-07T12:08:06-08:00 Implement an inline method-target cache. Add code to the prologue of every ccbuf to check whether %eax is as expected, and jump out to bt_continue to do a frag_hash lookup if not. This allows us to chain calls to JMP targets, effectively implementing an inline cache for JMP calls. The additional check at the start of every prologue causes a small overall performance penalty. Whether this effect or the inline cache is dominant depends on the test case, but future work should remove this unnecessary check in many common cases. 26acc3a78930abba1b5cb275c7da887537568506 Nelson Elhage nelhage@mit.edu 713844a69cdf0c6cfafa9f0344e5e15125e165e0 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/818a6d66c613b83bcb9511aad4241dd8b59dfff7 818a6d66c613b83bcb9511aad4241dd8b59dfff7 2009-11-07T12:30:19-08:00 2009-11-07T10:30:51-08:00 Chain adjacent frags without a jmp when possible. 3630f2a62ea807c6936af46fcaf54b42565f51cf Nelson Elhage nelhage@mit.edu b2566c014235ec14e7a5f9e6c28424854c16a147 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/713844a69cdf0c6cfafa9f0344e5e15125e165e0 713844a69cdf0c6cfafa9f0344e5e15125e165e0 2009-11-07T12:30:19-08:00 2009-11-07T10:25:20-08:00 Use separate buffers for compiled_frag's and actual code. 7ce4c2454e062a44edaf20266b8c701f0832b392 Nelson Elhage nelhage@mit.edu 4817b75adb0b7565739f5ecc2f69c19d878cfe7e Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/b2566c014235ec14e7a5f9e6c28424854c16a147 b2566c014235ec14e7a5f9e6c28424854c16a147 2009-11-07T12:30:19-08:00 2009-11-05T20:05:12-08:00 Rename register constants to avoid clash with ucontext.h. 43e54c1dd452be32c890812feb96f792ba4e9839 Nelson Elhage nelhage@mit.edu d100d2ae4746258167df5d6ace53eb3f603b9f55 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/4817b75adb0b7565739f5ecc2f69c19d878cfe7e 4817b75adb0b7565739f5ecc2f69c19d878cfe7e 2009-11-07T12:30:18-08:00 2009-11-05T19:59:42-08:00 Clean up -Wwrite-strings warnings. 3038794786653a0d888c64a2bc946225256d223d Nelson Elhage nelhage@mit.edu 3ae621f173bebbcd8a57f953aca0319416b76467 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/d100d2ae4746258167df5d6ace53eb3f603b9f55 d100d2ae4746258167df5d6ace53eb3f603b9f55 2009-11-07T12:30:18-08:00 2009-11-07T11:49:31-08:00 bemu: Improve printing of runtime. 9010dd4bff7924b75c036c789d559130833282a3 Nelson Elhage nelhage@mit.edu c6a2ed5628984f8121ed6a6edee4f9214295f553 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/3ae621f173bebbcd8a57f953aca0319416b76467 3ae621f173bebbcd8a57f953aca0319416b76467 2009-11-07T12:30:18-08:00 2009-11-05T19:59:20-08:00 Print the MIPS of the simulated CPU with -t. b1a6d4d26e5876c2293bbfe1798be6d26d585ebb Nelson Elhage nelhage@mit.edu 8107b95fdbac9a4420046722cf5e9382ab4aa11f Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/c6a2ed5628984f8121ed6a6edee4f9214295f553 c6a2ed5628984f8121ed6a6edee4f9214295f553 2009-11-07T12:30:18-08:00 2009-10-16T07:08:20-07:00 run-tests: Fix options for running 'timer' cc0aa2e0a3f54a5059de2f1b98fdad05fb14b364 Nelson Elhage nelhage@mit.edu 40a6f9def7b9231d0c2b0dbbbe2a702ba0db01cc Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/8107b95fdbac9a4420046722cf5e9382ab4aa11f 8107b95fdbac9a4420046722cf5e9382ab4aa11f 2009-11-07T12:30:18-08:00 2009-10-15T21:12:15-07:00 Add the test binaries to the default target. 13f25e985802f9462d8a95bf5612cb5930f621c0 Nelson Elhage nelhage@mit.edu 21939544f03bd71f21cb80fe805588ab01eb13fb Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/40a6f9def7b9231d0c2b0dbbbe2a702ba0db01cc 40a6f9def7b9231d0c2b0dbbbe2a702ba0db01cc 2009-11-07T12:30:18-08:00 2009-10-15T21:03:31-07:00 Add a fast-path frag hash lookup in bt_continue. Instead of going all the way back to C, check the first entry in the appropriate hash bucket directly from assembly. c3b93dfb1c0dfd2bb39b499f889de94a56a3e813 Nelson Elhage nelhage@mit.edu 93add09a506fd3161656478f4774656f2ac28054 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/21939544f03bd71f21cb80fe805588ab01eb13fb 21939544f03bd71f21cb80fe805588ab01eb13fb 2009-11-07T12:30:18-08:00 2009-10-15T20:54:13-07:00 Allow for two levels of logging output. 27fa15fadc75405be5efe894afaf4f856aded6bd Nelson Elhage nelhage@mit.edu bf764fa286acecbaae1d3651aaccfc9dac5649d6 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/93add09a506fd3161656478f4774656f2ac28054 93add09a506fd3161656478f4774656f2ac28054 2009-11-07T12:30:18-08:00 2009-10-14T21:34:57-07:00 Import a version of the Richards benchmark. 791956af0cc5f5850174e1fbc64c015bafd382ce Nelson Elhage nelhage@mit.edu 058bc07a4e98fe96f5f172dc4ca9a3429c068cad Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/bf764fa286acecbaae1d3651aaccfc9dac5649d6 bf764fa286acecbaae1d3651aaccfc9dac5649d6 2009-11-07T12:30:18-08:00 2009-10-14T19:29:24-07:00 Add test to test executing a jump table. 6c525c52ae4462bf939407f2b64d81865e26d549 Nelson Elhage nelhage@mit.edu efd82f384157477f458a81cab2bb8cf2397e10e7 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/058bc07a4e98fe96f5f172dc4ca9a3429c068cad 058bc07a4e98fe96f5f172dc4ca9a3429c068cad 2009-11-07T12:30:17-08:00 2009-11-07T12:16:01-08:00 Fully-parenthesize the X86_REL32 macro. 7dd9e579f6cf6c13e523146ddadb458a9d76061e Nelson Elhage nelhage@mit.edu 743ca73e1a2bf939dea693f9f54813b7a1763f69 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/efd82f384157477f458a81cab2bb8cf2397e10e7 efd82f384157477f458a81cab2bb8cf2397e10e7 2009-10-10T11:24:09-07:00 2009-10-10T11:24:09-07:00 Remove trailing semicolons after macro definitions. 4a14c2a440c7543df086a1f343ba7f5c7ac8c28e Nelson Elhage nelhage@mit.edu 542a63e1d9ab6cd4eabcfe3b5af5335ba6d045bf Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/743ca73e1a2bf939dea693f9f54813b7a1763f69 743ca73e1a2bf939dea693f9f54813b7a1763f69 2009-07-07T23:32:29-07:00 2009-07-07T23:32:29-07:00 lab8: Restore accidentally deleted echo. 61714adeb1e0db60ded08619a5ce977db50cb120 Nelson Elhage nelhage@mit.edu e35a7672d39adef0f5302adbc3bf8026ae4c95fa Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/542a63e1d9ab6cd4eabcfe3b5af5335ba6d045bf 542a63e1d9ab6cd4eabcfe3b5af5335ba6d045bf 2009-07-07T22:40:32-07:00 2009-07-07T22:40:32-07:00 lab8: Quit on end-of-file. 9dd3dcd205f29b6ab4e19b7048ce8a2fb48e810a Nelson Elhage nelhage@mit.edu 24ca0802c2d3609b0798c34af54c9693dabae673 Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/e35a7672d39adef0f5302adbc3bf8026ae4c95fa e35a7672d39adef0f5302adbc3bf8026ae4c95fa 2009-07-07T22:39:56-07:00 2009-07-07T22:39:56-07:00 Return -1 to RDCAHR on end-of-file. 488db7f8be15e50819c0cb9c3f4716ced5781279 Nelson Elhage nelhage@mit.edu bedcfe2de170ced8e662c1f506fc8717b00b694d Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/24ca0802c2d3609b0798c34af54c9693dabae673 24ca0802c2d3609b0798c34af54c9693dabae673 2009-07-07T20:44:17-07:00 2009-07-07T20:44:17-07:00 Allow STDIN to not be a terminal. 03c7a09913b3b69cbfc5915a382b4e546793e72e Nelson Elhage nelhage@mit.edu 47f47471983b77adbfb86559169d173d6fc5c88b Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/bedcfe2de170ced8e662c1f506fc8717b00b694d bedcfe2de170ced8e662c1f506fc8717b00b694d 2009-04-15T22:09:36-07:00 2009-04-15T22:09:36-07:00 Remove two TODO items. 8a5e74543441e9fb6a5b088d7986fc6f908773d1 Nelson Elhage nelhage@mit.edu 75c0bc150d71f6cb9f780890de5901e90973097e Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/47f47471983b77adbfb86559169d173d6fc5c88b 47f47471983b77adbfb86559169d173d6fc5c88b 2009-04-15T21:58:57-07:00 2009-04-15T21:58:57-07:00 Parenthesize arguments in the {set,clear}_interrupt macros. 8688a608b72f4133642a9ce0690cde2b5eca33fc Nelson Elhage nelhage@mit.edu 00a009b9dd6df6544e5729f08b4344077a52e1dd Nelson Elhage nelhage@mit.edu http://github.com/nelhage/bemu/commit/75c0bc150d71f6cb9f780890de5901e90973097e 75c0bc150d71f6cb9f780890de5901e90973097e 2009-01-24T14:20:42-08:00 2009-01-24T14:00:46-08:00 Implement segmentation sandboxing on OS X as well. OS X uses i386_set_ldt, not modify_ldt. I should probably consider moving to autotools or something. d0fbd21fdb1cc23aa4a914714650aa02527261f7 Nelson Elhage nelhage@mit.edu