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[4/7] s390/module: Provide find_section() helper

Message ID 20240913130544.2398678-5-hca@linux.ibm.com
State New
Headers show
Series s390/vdso: getrandom() vdso implementation | expand

Commit Message

Heiko Carstens Sept. 13, 2024, 1:05 p.m. UTC 
Provide find_section() helper function which can be used to find a
section by name, similar to other architectures.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
 arch/s390/include/asm/module.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
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Patch

diff --git a/arch/s390/include/asm/module.h b/arch/s390/include/asm/module.h
index 9f1eea15872c..916ab59e458a 100644
--- a/arch/s390/include/asm/module.h
+++ b/arch/s390/include/asm/module.h
@@ -38,4 +38,18 @@  struct mod_arch_specific {
 #endif /* CONFIG_FUNCTION_TRACER */
 };
 
+static inline const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
+					   const Elf_Shdr *sechdrs,
+					   const char *name)
+{
+	const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+	const Elf_Shdr *s, *se;
+
+	for (s = sechdrs, se = sechdrs + hdr->e_shnum; s < se; s++) {
+		if (strcmp(name, secstrs + s->sh_name) == 0)
+			return s;
+	}
+	return NULL;
+}
+
 #endif /* _ASM_S390_MODULE_H */