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| author | Chris Johns <chrisj@rtems.org> | 2019-03-06 21:15:56 +1100 |
|---|---|---|
| committer | Chris Johns <chrisj@rtems.org> | 2019-03-07 06:33:47 +1100 |
| commit | ec1dd51aae0cbce0560b3d72a6f86c938340f2fc (patch) | |
| tree | ac4868a4d7a9a6af5ee2b523231002142570006c /bsps/powerpc/shared | |
| parent | testsuite: Make the OPERATION_COUNT a test configuration parameter. (diff) | |
| download | rtems-ec1dd51aae0cbce0560b3d72a6f86c938340f2fc.tar.bz2 | |
libdl: Add small data support to the remaining PowerPC BSPs.
Updates #3687
Diffstat (limited to 'bsps/powerpc/shared')
| -rw-r--r-- | bsps/powerpc/shared/start/linkcmds.share | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/bsps/powerpc/shared/start/linkcmds.share b/bsps/powerpc/shared/start/linkcmds.share index 25655236a7..7bf7279a02 100644 --- a/bsps/powerpc/shared/start/linkcmds.share +++ b/bsps/powerpc/shared/start/linkcmds.share @@ -1,12 +1,23 @@ OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") OUTPUT_ARCH(powerpc) + /* Do we need any of these for elf? __DYNAMIC = 0; */ MEMORY { VECTORS : ORIGIN = 0x0 , LENGTH = 0x3000 CODE : ORIGIN = 0x3000 , LENGTH = 32M - 0x3000 } + +/* + * The upper layer linker command file may optionally define the symbol + * bsp_section_small_data_area_size. By default, the small data area is + * defined by the .sdata and .sbss input sections. Define + * bsp_section_small_data_area_size, if you want to make space available for + * dynamically loaded libraries (libdl). Small memory targets which do not use + * libdl, should not define this symbol. + */ + SECTIONS { .entry_point_section : @@ -215,11 +226,17 @@ SECTIONS /* We want the small data sections together, so single-instruction offsets can access them all, and initialized data all before uninitialized, so we can shorten the on-disk segment size. */ - .sdata : { PROVIDE (_SDA_BASE_ = 32768); *(.sdata*) *(.gnu.linkonce.s.*) } >CODE + .sdata : { + bsp_section_sdata_begin = .; + PROVIDE (_SDA_BASE_ = 32768); + *(.sdata*) *(.gnu.linkonce.s.*) + bsp_section_sdata_end = .; + } > CODE _edata = .; PROVIDE (edata = .); .sbss : { + bsp_section_sbss_begin = .; PROVIDE (__sbss_start = .); *(.dynsbss) *(.sbss* .gnu.linkonce.sb.*) @@ -230,6 +247,11 @@ SECTIONS . += 1; PROVIDE (__SBSS_END__ = .); PROVIDE (__sbss_end = .); + bsp_section_sbss_end = .; + bsp_section_sdata_libdl_begin = .; + . = DEFINED(bsp_section_small_data_area_size) ? + bsp_section_sdata_begin + bsp_section_small_data_area_size : .; + bsp_section_sdata_libdl_end = .; } > CODE .plt : { *(.plt) } > CODE .bss : |