diff options
Diffstat (limited to 'src/core/dsp/ocl_load/C60_DLOAD_DYN/c60_dynamic.c')
| -rw-r--r-- | src/core/dsp/ocl_load/C60_DLOAD_DYN/c60_dynamic.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/core/dsp/ocl_load/C60_DLOAD_DYN/c60_dynamic.c b/src/core/dsp/ocl_load/C60_DLOAD_DYN/c60_dynamic.c new file mode 100644 index 0000000..545ba92 --- /dev/null +++ b/src/core/dsp/ocl_load/C60_DLOAD_DYN/c60_dynamic.c @@ -0,0 +1,200 @@ +/* +* c60_dynamic.c +* +* C6x-specific dynamic loader functionality +* +* Copyright (C) 2009-2014 Texas Instruments Incorporated - http://www.ti.com/ +* +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions +* are met: +* +* Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* +* Redistributions in binary form must reproduce the above copyright +* notice, this list of conditions and the following disclaimer in the +* documentation and/or other materials provided with the +* distribution. +* +* Neither the name of Texas Instruments Incorporated nor the names of +* its contributors may be used to endorse or promote products derived +* from this software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +*/ + +#ifdef C60_TARGET +#include "c60_elf32.h" +#include <inttypes.h> +#include "dload.h" + +/*****************************************************************************/ +/* c60_process_dynamic_tag() */ +/* */ +/* Process C6x specific dynamic tags. */ +/*****************************************************************************/ +BOOL DLDYN_c60_process_dynamic_tag(DLIMP_Dynamic_Module* dyn_module, int i) +{ + switch (dyn_module->dyntab[i].d_tag) + { + /*------------------------------------------------------------------*/ + /* DT_C6000_GSYM_OFFSET: Dynamic symbol table is partitioned into */ + /* local and global symbols. This tag has the */ + /* offset into the dynamic symbol table where */ + /* the global symbol table starts. */ + /*------------------------------------------------------------------*/ + case DT_C6000_GSYM_OFFSET: + dyn_module->gsymtab_offset = dyn_module->dyntab[i].d_un.d_val; +#if LOADER_DEBUG + if (debugging_on) + DLIF_trace("Found global symbol table: %d\n", + dyn_module->gsymtab_offset); +#endif + return TRUE; + + /*------------------------------------------------------------------*/ + /* DT_C6000_GSTR_OFFSET: Contains the offset into the dynamic */ + /* string table where the global symbol names */ + /* start. */ + /*------------------------------------------------------------------*/ + case DT_C6000_GSTR_OFFSET: + dyn_module->gstrtab_offset = dyn_module->dyntab[i].d_un.d_val; +#if LOADER_DEBUG + if (debugging_on) + DLIF_trace("Found global string table: %d\n", + dyn_module->gstrtab_offset); +#endif + return TRUE; + + /*------------------------------------------------------------------*/ + /* DT_C6000_DSBT_BASE: Contains address of DSBT in executable or */ + /* shared object. */ + /* We store the tag's location in the dynamic */ + /* module object so that we can update it */ + /* easily after the sections have been */ + /* allocated (tag value is relocated). */ + /*------------------------------------------------------------------*/ + case DT_C6000_DSBT_BASE: + dyn_module->dsbt_base_tagidx = i; + return TRUE; + + /*------------------------------------------------------------------*/ + /* DT_C6000_DSBT_INDEX: Contains specific request for a DSBT */ + /* index. If this object module doesn't get */ + /* the index it requested, then the load will */ + /* fail (object module has already assumed */ + /* that it got the DSBT index it asks for; */ + /* references to the DSBT index will not have */ + /* relocation entries associated with them). */ + /*------------------------------------------------------------------*/ + case DT_C6000_DSBT_INDEX: + dyn_module->dsbt_index = dyn_module->dyntab[i].d_un.d_val; + return TRUE; + + /*------------------------------------------------------------------*/ + /* DT_C6000_DSBT_SIZE: Contains the size of the DSBT allocated for */ + /* this object module. It must be big enough */ + /* to hold the content of the master DSBT. */ + /*------------------------------------------------------------------*/ + case DT_C6000_DSBT_SIZE: + dyn_module->dsbt_size = dyn_module->dyntab[i].d_un.d_val; + return TRUE; + + } + + return FALSE; +} + +/*****************************************************************************/ +/* DLDYN_c60_relocate_dynamic_tag_info() */ +/* */ +/* Update any target specific dynamic tag values that are associated with */ +/* a section address. Return TRUE if the tag value is successfully */ +/* updated or if the tag is not associated with a section address, and */ +/* FALSE if we can't find the sectoin associated with the tag or if the */ +/* tag type is not recognized. */ +/* */ +/*****************************************************************************/ +BOOL DLDYN_c60_relocate_dynamic_tag_info(DLIMP_Dynamic_Module *dyn_module, + int32_t i) +{ + switch (dyn_module->dyntab[i].d_tag) + { + /*---------------------------------------------------------------------*/ + /* These tags do not point to sections. */ + /*---------------------------------------------------------------------*/ + case DT_C6000_GSYM_OFFSET: + case DT_C6000_GSTR_OFFSET: + case DT_C6000_DSBT_INDEX: + case DT_C6000_DSBT_SIZE: + return TRUE; + + /*---------------------------------------------------------------------*/ + /* DT_C6000_DSBT_BASE: This tag value provides the virtual address of */ + /* the .dsbt section. We will go find the program */ + /* header entry associated with the DSBT section */ + /* and update this tag with the section's run */ + /* address. */ + /*---------------------------------------------------------------------*/ + case DT_C6000_DSBT_BASE: + return DLIMP_update_dyntag_section_address(dyn_module, i); + } + + DLIF_error(DLET_MISC, "Invalid dynamic tag encountered, %d\n", + (int)dyn_module->dyntab[i].d_tag); + return FALSE; +} + +/*****************************************************************************/ +/* c60_process_eiosabi() */ +/* */ +/* Process the EI_OSABI value. Verify that the OSABI is supported and set */ +/* any variables which depend on the OSABI. */ +/*****************************************************************************/ +BOOL DLDYN_c60_process_eiosabi(DLIMP_Dynamic_Module* dyn_module) +{ + uint8_t osabi = dyn_module->fhdr.e_ident[EI_OSABI]; + + if (dyn_module->relocatable) + { + /*-------------------------------------------------------------------*/ + /* ELFOSABI_C6000_ELFABI - C6x Baremetal ABI */ + /*-------------------------------------------------------------------*/ + if (osabi == ELFOSABI_C6000_ELFABI) + return TRUE; + +#if 0 + /*-------------------------------------------------------------------*/ + /* ELFOSABI_C6000_LINUX - C6x Linux ABI */ + /* presently unsupported */ + /*-------------------------------------------------------------------*/ + if (osabi == ELFOSABI_C6000_LINUX) + return TRUE; +#endif + } + else + { + /*-------------------------------------------------------------------*/ + /* Static executables should have an OSABI of NONE. */ + /*-------------------------------------------------------------------*/ + if (osabi == ELFOSABI_NONE) + return TRUE; + } + + return FALSE; +} + +#endif |