Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
sparc64: vdso2c: Remove symbol handling
There are no handled symbols left.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Andreas Larsson <andreas@gaisler.com>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Andreas Larsson <andreas@gaisler.com>
Link: https://patch.msgid.link/20260304-vdso-sparc64-generic-2-v6-12-d8eb3b0e1410@linutronix.de
authored by
Thomas Weißschuh
and committed by
Thomas Gleixner
168d23e5
fb57f3e7
+1
-50
-10
arch/sparc/vdso/vdso2c.c
-10
arch/sparc/vdso/vdso2c.c
···
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const char *outfilename;
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-
struct vdso_sym {
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const char *name;
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int export;
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};
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-
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struct vdso_sym required_syms[] = {
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};
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-
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__attribute__((format(printf, 1, 2))) __attribute__((noreturn))
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static void fail(const char *format, ...)
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{
···
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#define PUT_BE(x, val) \
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PBE(x, val, 64, PBE(x, val, 32, PBE(x, val, 16, LAST_PBE(x, val))))
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-
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#define NSYMS ARRAY_SIZE(required_syms)
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#define BITSFUNC3(name, bits, suffix) name##bits##suffix
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#define BITSFUNC2(name, bits, suffix) BITSFUNC3(name, bits, suffix)
+1
-40
arch/sparc/vdso/vdso2c.h
+1
-40
arch/sparc/vdso/vdso2c.h
···
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unsigned long mapping_size;
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int i;
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unsigned long j;
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ELF(Shdr) *symtab_hdr = NULL, *strtab_hdr;
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+
ELF(Shdr) *symtab_hdr = NULL;
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ELF(Ehdr) *hdr = (ELF(Ehdr) *)raw_addr;
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ELF(Dyn) *dyn = 0, *dyn_end = 0;
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INT_BITS syms[NSYMS] = {};
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ELF(Phdr) *pt = (ELF(Phdr) *)(raw_addr + GET_BE(&hdr->e_phoff));
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/* Walk the segment table. */
···
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if (!symtab_hdr)
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fail("no symbol table\n");
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strtab_hdr = raw_addr + GET_BE(&hdr->e_shoff) +
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GET_BE(&hdr->e_shentsize) * GET_BE(&symtab_hdr->sh_link);
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/* Walk the symbol table */
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for (i = 0;
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i < GET_BE(&symtab_hdr->sh_size) / GET_BE(&symtab_hdr->sh_entsize);
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i++) {
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int k;
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ELF(Sym) *sym = raw_addr + GET_BE(&symtab_hdr->sh_offset) +
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GET_BE(&symtab_hdr->sh_entsize) * i;
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const char *name = raw_addr + GET_BE(&strtab_hdr->sh_offset) +
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GET_BE(&sym->st_name);
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-
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for (k = 0; k < NSYMS; k++) {
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if (!strcmp(name, required_syms[k].name)) {
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if (syms[k]) {
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fail("duplicate symbol %s\n",
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required_syms[k].name);
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}
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/*
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* Careful: we use negative addresses, but
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* st_value is unsigned, so we rely
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* on syms[k] being a signed type of the
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* correct width.
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*/
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syms[k] = GET_BE(&sym->st_value);
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}
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}
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}
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-
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if (!name) {
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fwrite(stripped_addr, stripped_len, 1, outfile);
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return;
···
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fprintf(outfile, "const struct vdso_image %s_builtin = {\n", name);
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fprintf(outfile, "\t.data = raw_data,\n");
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fprintf(outfile, "\t.size = %lu,\n", mapping_size);
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for (i = 0; i < NSYMS; i++) {
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if (required_syms[i].export && syms[i])
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fprintf(outfile, "\t.sym_%s = %" PRIi64 ",\n",
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required_syms[i].name, (int64_t)syms[i]);
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}
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fprintf(outfile, "};\n");
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}