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author | Andy Wingo <wingo@pobox.com> | 2013-11-07 23:03:45 +0100 |
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committer | Andy Wingo <wingo@pobox.com> | 2013-11-07 23:03:45 +0100 |
commit | 581a4eb82b1534970060e3cbd79b9a96d351edf9 (patch) | |
tree | ffd7c1b175ca1746f63f697b4259e52c6c66597a /libguile/programs.c | |
parent | 72b82b0f210ef47798133dabf2a81eef3e036ba6 (diff) | |
download | guile-581a4eb82b1534970060e3cbd79b9a96d351edf9.tar.gz |
frame-instruction-pointer is absolute; rewrite (system vm coverage)
* libguile/frames.c (scm_frame_source): Instead of assuming that
scm_frame_procedure is correct, use the IP to get the source.
(scm_frame_instruction_pointer): Return an absolute value instead of
assuming that slot 0 is correct. (It isn't, when preparing for a tail
call.)
* libguile/programs.h:
* libguile/programs.c (scm_find_source_for_addr): New internal helper.
* module/system/repl/debug.scm (print-registers): Readably print
absolute instruction pointers.
* module/system/vm/coverage.scm: Complete rewrite to use absolute IP's.
We can't assume that frame-procedure is cheap if it is correct, or
correct if it is cheap. Anyway using the address is better anyway.
(coverage-data->lcov): Disable per-function info temporarily.
(loaded-modules, module-procedures, closest-source-line)
(closed-over-procedures): Remove these. Instead of going from
procedures to source info, now we go from ELF image to source info.
* module/system/vm/debug.scm (debug-context-length): New interface.
* module/system/vm/program.scm (source-for-addr): New internal helper.
Diffstat (limited to 'libguile/programs.c')
-rw-r--r-- | libguile/programs.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libguile/programs.c b/libguile/programs.c index 77b6417c7..3e228f79c 100644 --- a/libguile/programs.c +++ b/libguile/programs.c @@ -399,6 +399,22 @@ scm_i_program_properties (SCM program) #undef FUNC_NAME SCM +scm_find_source_for_addr (SCM ip) +{ + static SCM source_for_addr = SCM_BOOL_F; + + if (scm_is_false (source_for_addr)) { + if (!scm_module_system_booted_p) + return SCM_BOOL_F; + + source_for_addr = + scm_c_private_variable ("system vm program", "source-for-addr"); + } + + return scm_call_1 (scm_variable_ref (source_for_addr), ip); +} + +SCM scm_program_source (SCM program, SCM ip, SCM sources) { static SCM program_source = SCM_BOOL_F; |