RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

libdl: Add powerpc large memory and small data support.

Browse Source 
- Add support for architecure sections that can be handled by the
  architecture back end.

- Add trampoline/fixup support for PowerPC. This means the PowerPC
  now supports large memory loading of applications.

- Add a bit allocator to manage small block based regions of memory.

- Add small data (sdata/sbss) support for the PowerPC. The support
  makes the linker allocated small data region of memory a global
  resource available to libdl loaded object files.

Updates #3687
Updates #3685
This commit is contained in:
Chris Johns
2019-02-02 15:09:53 +11:00
parent 194eb403c3
commit 6c9f0176a9
55 changed files with 1643 additions and 308 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
bsps/powerpc/psim/start/linkcmds
View File

@@ -38,8 +38,8 @@ PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 10000);
PSIM = 0x0c000000;
/*
* Allocate the maximum memory to the sdata/sbss section.
* Allocate the maximum size to the small data sdata/sbss section.
*/
bsp_section_sdata_bss_maximum_size = 1;
bsp_section_set_sdata_sbss_size = 65536;
INCLUDE linkcmds.base

5
bsps/powerpc/qoriq/start/linkcmds.qoriq_e500
View File

@@ -35,4 +35,9 @@ bsp_section_robarrier_align = 0x1000000;
bsp_section_rwbarrier_align = 0x1000000;
qoriq = 0xffe00000;
/*
* Allocate the maximum size to the small data sdata/sbss section.
*/
bsp_section_set_sdata_sbss_size = 65536;
INCLUDE linkcmds.base

5
bsps/powerpc/qoriq/start/linkcmds.qoriq_e6500_32
View File

@@ -38,4 +38,9 @@ qoriq = 0xffe000000;
qoriq_bman_portal = 0xff4000000;
qoriq_qman_portal = 0xff6000000;
/*
* Allocate the maximum size to the small data sdata/sbss section.
*/
bsp_section_set_sdata_sbss_size = 65536;
INCLUDE linkcmds.base

13
bsps/powerpc/shared/start/linkcmds.base
View File

@@ -293,20 +293,33 @@ SECTIONS {
KEEP (*(SORT(.rtemsrwset.*)))
} > REGION_DATA AT > REGION_DATA_LOAD
.sdata : ALIGN_WITH_INPUT {
bsp_section_sdata_begin = .;
PROVIDE (_SDA_BASE_ = 32768);
*(.sdata .sdata.* .gnu.linkonce.s.*)
bsp_section_sdata_end = .;
bsp_section_data_end = .;
} > REGION_DATA AT > REGION_DATA_LOAD
bsp_section_sdata_size = bsp_section_sdata_end - bsp_section_sdata_begin;
bsp_section_data_size = bsp_section_data_end - bsp_section_data_begin;
bsp_section_data_load_begin = LOADADDR (.data);
bsp_section_data_load_end = bsp_section_data_load_begin + bsp_section_data_size;
/*
* Set bsp_section_set_sdata_bss_size to the system's sdata and bss data size, eg:
*
* bsp_section_set_sdata_sbss_size = 65536;
*/
bsp_section_sdata_sbss_size = DEFINED(bsp_section_set_sdata_sbss_size) ?
bsp_section_set_sdata_sbss_size : 0;
.sbss : ALIGN_WITH_INPUT {
bsp_section_sbss_begin = .;
*(.dynsbss)
*(.sbss .sbss.* .gnu.linkonce.sb.*)
*(.scommon)
bsp_section_sbss_end = .;
bsp_section_sdata_libdl_begin = .;
. += bsp_section_sdata_sbss_size - (bsp_section_sdata_size + bsp_section_sbss_size);
bsp_section_sdata_libdl_end = .;
} > REGION_DATA AT > REGION_DATA
bsp_section_sbss_size = bsp_section_sbss_end - bsp_section_sbss_begin;