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LLEXT: add llext_section_offset() to replace llext_find_section()

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Now that section header cache is persistent, it can be used for
finding sections. Add a new function, similar to llext_find_section()
to use it and deprecate llext_find_section().

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
This commit is contained in:
Guennadi Liakhovetski 2024-11-05 10:38:24 +01:00 • committed by Anas Nashif
commit 44d96a2668
3 changed files with 49 additions and 0 deletions
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7
tests/subsys/llext/simple/src/test_llext_simple.c
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@ -11,6 +11,7 @@
#if defined(CONFIG_FILE_SYSTEM_LITTLEFS)
#include <zephyr/fs/littlefs.h>
#endif
#include <zephyr/llext/elf.h>
#include <zephyr/llext/llext.h>
#include <zephyr/llext/symbol.h>
#include <zephyr/llext/buf_loader.h>
@ -411,6 +412,7 @@ ZTEST(llext, test_find_section)
struct llext_loader *loader = &buf_loader.loader;
struct llext_load_param ldr_parm = LLEXT_LOAD_PARAM_DEFAULT;
struct llext *ext = NULL;
elf_shdr_t shdr;
res = llext_load(loader, "find_section", &ext, &ldr_parm);
zassert_ok(res, "load should succeed");
@ -418,6 +420,11 @@ ZTEST(llext, test_find_section)
section_ofs = llext_find_section(loader, ".data");
zassert_true(section_ofs > 0, "find_section returned %zd", section_ofs);
res = llext_get_section_header(loader, ext, ".data", &shdr);
zassert_ok(res, "get_section_header() should succeed");
zassert_equal(shdr.sh_offset, section_ofs,
"different section offset %zd from get_section_header", shdr.sh_offset);
uintptr_t symbol_ptr = (uintptr_t)llext_find_sym(&ext->exp_tab, "number");
uintptr_t section_ptr = (uintptr_t)find_section_ext + section_ofs;