vendor/elftoolchain/elftoolchain-r2974

1 files changed, 178 insertions, 0 deletions

diff --git a/libelf/gelf_phdr.c b/libelf/gelf_phdr.c
new file mode 100644
index 000000000000..ade82dbdf877
--- /dev/null
+++ b/libelf/gelf_phdr.c
@@ -0,0 +1,178 @@
+/*-
+ * Copyright (c) 2006,2008 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+
+#include <gelf.h>
+#include <libelf.h>
+#include <limits.h>
+
+#include "_libelf.h"
+
+ELFTC_VCSID("$Id: gelf_phdr.c 2268 2011-12-03 17:05:11Z jkoshy $");
+
+Elf32_Phdr *
+elf32_getphdr(Elf *e)
+{
+	return (_libelf_getphdr(e, ELFCLASS32));
+}
+
+Elf64_Phdr *
+elf64_getphdr(Elf *e)
+{
+	return (_libelf_getphdr(e, ELFCLASS64));
+}
+
+GElf_Phdr *
+gelf_getphdr(Elf *e, int index, GElf_Phdr *d)
+{
+	int ec;
+	Elf32_Ehdr *eh32;
+	Elf64_Ehdr *eh64;
+	Elf32_Phdr *ep32;
+	Elf64_Phdr *ep64;
+
+	if (d == NULL || e == NULL ||
+	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
+	    (e->e_kind != ELF_K_ELF) || index < 0) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (NULL);
+	}
+
+	if (ec == ELFCLASS32) {
+		if ((eh32 = _libelf_ehdr(e, ELFCLASS32, 0)) == NULL ||
+		    ((ep32 = _libelf_getphdr(e, ELFCLASS32)) == NULL))
+			return (NULL);
+
+		if (index >= eh32->e_phnum) {
+			LIBELF_SET_ERROR(ARGUMENT, 0);
+			return (NULL);
+		}
+
+		ep32 += index;
+
+		d->p_type   = ep32->p_type;
+		d->p_offset = ep32->p_offset;
+		d->p_vaddr  = (Elf64_Addr) ep32->p_vaddr;
+		d->p_paddr  = (Elf64_Addr) ep32->p_paddr;
+		d->p_filesz = (Elf64_Xword) ep32->p_filesz;
+		d->p_memsz  = (Elf64_Xword) ep32->p_memsz;
+		d->p_flags  = ep32->p_flags;
+		d->p_align  = (Elf64_Xword) ep32->p_align;
+
+	} else {
+		if ((eh64 = _libelf_ehdr(e, ELFCLASS64, 0)) == NULL ||
+		    (ep64 = _libelf_getphdr(e, ELFCLASS64)) == NULL)
+			return (NULL);
+
+		if (index >= eh64->e_phnum) {
+			LIBELF_SET_ERROR(ARGUMENT, 0);
+			return (NULL);
+		}
+
+		ep64 += index;
+
+		*d = *ep64;
+	}
+
+	return (d);
+}
+
+Elf32_Phdr *
+elf32_newphdr(Elf *e, size_t count)
+{
+	return (_libelf_newphdr(e, ELFCLASS32, count));
+}
+
+Elf64_Phdr *
+elf64_newphdr(Elf *e, size_t count)
+{
+	return (_libelf_newphdr(e, ELFCLASS64, count));
+}
+
+void *
+gelf_newphdr(Elf *e, size_t count)
+{
+	if (e == NULL) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (NULL);
+	}
+	return (_libelf_newphdr(e, e->e_class, count));
+}
+
+int
+gelf_update_phdr(Elf *e, int ndx, GElf_Phdr *s)
+{
+	int ec, phnum;
+	void *ehdr;
+	Elf32_Phdr *ph32;
+	Elf64_Phdr *ph64;
+
+	if (s == NULL || e == NULL || e->e_kind != ELF_K_ELF ||
+	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (0);
+	}
+
+	if (e->e_cmd == ELF_C_READ) {
+		LIBELF_SET_ERROR(MODE, 0);
+		return (0);
+	}
+
+	if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL)
+		return (0);
+
+	if (ec == ELFCLASS32)
+		phnum = ((Elf32_Ehdr *) ehdr)->e_phnum;
+	else
+		phnum = ((Elf64_Ehdr *) ehdr)->e_phnum;
+
+	if (ndx < 0 || ndx > phnum) {
+		LIBELF_SET_ERROR(ARGUMENT, 0);
+		return (0);
+	}
+
+	(void) elf_flagphdr(e, ELF_C_SET, ELF_F_DIRTY);
+
+	if (ec == ELFCLASS64) {
+		ph64 = e->e_u.e_elf.e_phdr.e_phdr64 + ndx;
+		*ph64 = *s;
+		return (1);
+	}
+
+	ph32 = e->e_u.e_elf.e_phdr.e_phdr32 + ndx;
+
+	ph32->p_type     =  s->p_type;
+	ph32->p_flags    =  s->p_flags;
+	LIBELF_COPY_U32(ph32, s, p_offset);
+	LIBELF_COPY_U32(ph32, s, p_vaddr);
+	LIBELF_COPY_U32(ph32, s, p_paddr);
+	LIBELF_COPY_U32(ph32, s, p_filesz);
+	LIBELF_COPY_U32(ph32, s, p_memsz);
+	LIBELF_COPY_U32(ph32, s, p_align);
+
+	return (1);
+}