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libdl: Fix the support for constructors and desctructors.

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- Fix the handling of pending objects.
- Add a constructor flags in objects to track then being called.

Closes #2921
This commit is contained in:
Chris Johns
2019-01-09 22:14:11 +11:00
parent a7c6176293
commit 4408603e27
7 changed files with 145 additions and 60 deletions
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21
cpukit/libdl/rtl-elf.c
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@@ -993,6 +993,24 @@ rtems_rtl_elf_parse_sections (rtems_rtl_obj* obj, int fd, Elf_Ehdr* ehdr)
flags = RTEMS_RTL_OBJ_SECT_STR;
break;
case SHT_INIT_ARRAY:
/*
* Constructors are text and need to be loaded.
*/
flags = (RTEMS_RTL_OBJ_SECT_CTOR |
RTEMS_RTL_OBJ_SECT_TEXT |
RTEMS_RTL_OBJ_SECT_LOAD);
break;
case SHT_FINI_ARRAY:
/*
* Destructors are text and need to be loaded.
*/
flags = (RTEMS_RTL_OBJ_SECT_DTOR |
RTEMS_RTL_OBJ_SECT_TEXT |
RTEMS_RTL_OBJ_SECT_LOAD);
break;
default:
/*
* See if there are architecture specific flags?
@@ -1019,6 +1037,9 @@ rtems_rtl_elf_parse_sections (rtems_rtl_obj* obj, int fd, Elf_Ehdr* ehdr)
if ((shdr.sh_flags & SHF_LINK_ORDER) != 0)
flags |= RTEMS_RTL_OBJ_SECT_LINK;
/*
* Some architexctures support a named PROGBIT section for INIT/FINI.
*/
len = RTEMS_RTL_ELF_STRING_MAX;
if (!rtems_rtl_obj_cache_read (strings, fd,
sectstroff + shdr.sh_name,