linux-kernel - [Patch 8/21] ia64 Implementation of elf_core_copy_extra

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Message-ID: <20101214153828.2b3fd160@suzukikp>
Date:	Tue, 14 Dec 2010 15:38:28 +0530
From:	"Suzuki K. Poulose" <suzuki@...ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	"Suzuki K. Poulose" <suzuki@...ibm.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Christoph Hellwig <hch@....de>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Daisuke HATAYAMA <d.hatayama@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>,
	Roland McGrath <roland@...hat.com>,
	Amerigo Wang <amwang@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [Patch 8/21] ia64 Implementation of elf_core_copy_extra_phdrs()

ia64 impelementation for elf_core_copy_extra_phdrs(). Adapted from 
elf_core_write_extra_phdrs().

Signed-off-by: Suzuki K. Poulose <suzuki@...ibm.com>
---
 arch/ia64/kernel/elfcore.c |   34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

Index: linux-2.6.36-rc7/arch/ia64/kernel/elfcore.c
===================================================================
--- linux-2.6.36-rc7.orig/arch/ia64/kernel/elfcore.c
+++ linux-2.6.36-rc7/arch/ia64/kernel/elfcore.c
@@ -42,6 +42,40 @@ int elf_core_write_extra_phdrs(struct fi
 	return 1;
 }
 
+int elf_core_copy_extra_phdrs(char *bufp, loff_t offset, size_t *size,
+				unsigned long limit)
+{
+	const struct elf_phdr *const gate_phdrs =
+		(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
+	int i;
+	Elf64_Off ofs = 0;
+	struct elf_phdr *phdr = (struct elf_phdr *) bufp;
+
+	for (i = 0; i < GATE_EHDR->e_phnum; ++i) {
+		*size += sizeof(*phdr);
+		if (*size > limit)
+			return 0;
+
+		*phdr = gate_phdrs[i];
+
+		if (phdr->p_type == PT_LOAD) {
+			phdr->p_memsz = PAGE_ALIGN(phdr->p_memsz);
+			phdr->p_filesz = phdr->p_memsz;
+			if (ofs == 0) {
+				ofs = phdr->p_offset = *offset;
+				offset += phdr->p_filesz;
+			} else {
+				phdr->p_offset = ofs;
+			}
+		} else {
+			phdr->p_offset += ofs;
+		}
+		phdr->p_paddr = 0; /* match other core phdrs */
+		phdr++;
+	}
+	return 1;
+}
+
 int elf_core_write_extra_data(struct file *file, size_t *size,
 			      unsigned long limit)
 {
--
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