elfcopy: exclude extension when converting from binary
When converting from binary to ELF, elfcopy creates symbols _binary_<filename>_start_, _binary_<filename>_end, and _binary_<filename>_size. For compatibility with GNU objcopy (and to produce sensible symbol names) the extension must be stripped off. Reviewed by: imp Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D4238
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=291958
@ -37,6 +37,16 @@
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ELFTC_VCSID("$Id: binary.c 3174 2015-03-27 17:13:41Z emaste $");
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static int
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basename_length(const char *filename)
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{
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char *p;
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if ((p = strchr(filename, '.')) != NULL)
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return (p - filename);
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return (strlen(filename));
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}
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/*
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* Convert ELF object to `binary'. Sections with SHF_ALLOC flag set
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* are copied to the result binary. The relative offsets for each section
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@ -211,7 +221,8 @@ create_elf_from_binary(struct elfcopy *ecp, int ifd, const char *ifn)
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shtab->sz += gelf_fsize(ecp->eout, ELF_T_SHDR, 2, EV_CURRENT);
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#define _GEN_SYMNAME(S) do { \
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snprintf(name, sizeof(name), "%s%s%s", "_binary_", ifn, S); \
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snprintf(name, sizeof(name), "%s%.*s%s", "_binary_", \
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basename_length(ifn), ifn, S); \
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} while (0)
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/*
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