mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-06-19 02:00:26 +02:00
Code Activity

frame-instruction-pointer is absolute; rewrite (system vm coverage)

Browse source 
* 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.
This commit is contained in:
Andy Wingo 2013-11-07 23:03:45 +01:00
parent 72b82b0f21
commit 581a4eb82b
7 changed files with 204 additions and 220 deletions
Download patch file Download diff file Expand all files Collapse all files

2
libguile/programs.h
View file

@ -51,6 +51,8 @@ SCM_INTERNAL SCM scm_i_rtl_program_name (SCM program);
SCM_INTERNAL SCM scm_i_rtl_program_documentation (SCM program);
SCM_INTERNAL SCM scm_i_rtl_program_properties (SCM program);
SCM_INTERNAL SCM scm_find_source_for_addr (SCM ip);
/*
* Programs
*/