* collect2.c (DO_COLLECT_EXPORT_LIST): New internal macro,

[thirdparty/gcc.git] / gcc / ChangeLog

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+2009-08-28  Olivier Hainque  <hainque@adacore.com>
+
+       * collect2.c (DO_COLLECT_EXPORT_LIST): New internal macro,
+       always defined.  Reflect definition or absence of such for
+       COLLECT_EXPORT_LIST.  Readability helper.
+       (scanfilter): New enum, to help control what symbols
+       are to be considered or ignored by scan_prog_file.
+       (enum pass): Rename as "scanpass", moved together with scanfilter
+       prior to scan_prog_file's prototype.
+       (scan_prog_file): Accept and honor scanpass and scanfilter arguments.
+       Group prototype with the scanpass/scanfilter definitions, factorize
+       head comments for the several implementations at the prototype.
+       (main): Reorganize the first pass link control to let AIX
+       drag only the needed frame tables in executables.  Prevent
+       frame tables collection during the scan aimed at static ctors.
+       Pre-link and scan for frame tables later to compensate.
+       * doc/tm.texi (ASM_OUTPUT_DWARF_TABLE_REF): New macro.
+       A C statement to issue assembly directives that create a reference
+       to the given DWARF table identifier label from the current function
+       section.
+       * dwarf2out.c (switch_to_eh_frame_section): Add a BACK argument
+       to differentiate first time section entry.  Only emit a .data
+       tables start identifier label the first time around.
+       (switch_to_frame_table_section): New function.  Helper for
+       output_call_frame_info to switch possibly BACK into the eh_frame
+       or the debug_frame section depending on FOR_EH.
+       (output_call_frame_info): Use helper to first enter the proper
+       frame section.
+       (output_fde): Use ASM_OUTPUT_DWARF_TABLE_REF when defined to
+       emit a link to the frame table start label from each function
+       section.
+       * config/rs6000/rs6000.c (rs6000_aix_asm_output_dwarf_table_ref):
+       New function.  Implementation of ASM_OUTPUT_DWARF_TABLE_REF.
+       * config/rs6000/rs6000-protos.h: Declare it.
+       * config/rs6000/aix.h (ASM_OUTPUT_DWARF_TABLE_REF): Define.
+
 2009-08-27  Kaz Kojima  <kkojima@gcc.gnu.org>
 
        * config/sh/sh.c (split_branches): Check the result of