linux-kernel - [PATCH 07/19] ia64 impelementation for elf_core_copy_extra

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Message-ID: <20131004103135.1612.79235.stgit@f19-x64>
Date:	Fri, 04 Oct 2013 16:01:35 +0530
From:	Janani Venkataraman <jananive@...ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	amwang@...hat.com, rdunlap@...otime.net, andi@...stfloor.org,
	aravinda@...ux.vnet.ibm.com, hch@....de, mhiramat@...hat.com,
	jeremy.fitzhardinge@...rix.com, xemul@...allels.com,
	suzuki@...ux.vnet.ibm.com, kosaki.motohiro@...fujitsu.com,
	adobriyan@...il.com, tarundsk@...ux.vnet.ibm.com,
	vapier@...too.org, roland@...k.frob.com, tj@...nel.org,
	ananth@...ux.vnet.ibm.com, gorcunov@...nvz.org, avagin@...nvz.org,
	oleg@...hat.com, eparis@...hat.com, d.hatayama@...fujitsu.com,
	james.hogan@...tec.com, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: [PATCH 07/19] ia64 impelementation for elf_core_copy_extra_phdrs()

From:Suzuki K. Poulose <suzuki@...ibm.com>

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(+)

diff --git a/arch/ia64/kernel/elfcore.c b/arch/ia64/kernel/elfcore.c
index bac1639..64c8acf 100644
--- a/arch/ia64/kernel/elfcore.c
+++ b/arch/ia64/kernel/elfcore.c
@@ -42,6 +42,40 @@ int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 	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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