From 3bded7db7e925e177570d95dfc7b5cb08118b101 Mon Sep 17 00:00:00 2001 From: Antonello Dettori Date: Thu, 16 Jun 2016 13:40:24 +0200 Subject: elfwriter: Fix multi-phdrs ELFs parsing Allow to write multiple phdrs, one for each non-consecutive section of the ELF. Previously it only worked for ELFs contaning a single program header. Change-Id: If6f95e999373a0cab4414b811e8ced4c93c67c30 Signed-off-by: Antonello Dettori Reviewed-on: https://review.coreboot.org/15215 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel --- util/cbfstool/elfheaders.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'util/cbfstool/elfheaders.c') diff --git a/util/cbfstool/elfheaders.c b/util/cbfstool/elfheaders.c index e068d38144..8942eea03c 100644 --- a/util/cbfstool/elfheaders.c +++ b/util/cbfstool/elfheaders.c @@ -958,6 +958,7 @@ static void write_phdrs(struct elf_writer *ew, struct buffer *phdrs) Elf64_Half i; Elf64_Phdr phdr; size_t num_written = 0; + size_t num_needs_write = 0; for (i = 0; i < ew->num_secs; i++) { struct elf_writer_section *sec = &ew->sections[i]; @@ -967,7 +968,7 @@ static void write_phdrs(struct elf_writer *ew, struct buffer *phdrs) if (!section_consecutive(ew, i)) { /* Write out previously set phdr. */ - if (num_written != 0) { + if (num_needs_write != num_written) { phdr_write(ew, phdrs, &phdr); num_written++; } @@ -983,6 +984,8 @@ static void write_phdrs(struct elf_writer *ew, struct buffer *phdrs) if (sec->shdr.sh_flags & SHF_WRITE) phdr.p_flags |= PF_W; phdr.p_align = sec->shdr.sh_addralign; + num_needs_write++; + } else { /* Accumulate file size and memsize. The assumption * is that each section is either NOBITS or full @@ -998,8 +1001,11 @@ static void write_phdrs(struct elf_writer *ew, struct buffer *phdrs) } /* Write out the last phdr. */ - if (num_written != ew->ehdr.e_phnum) + if (num_needs_write != num_written) { phdr_write(ew, phdrs, &phdr); + num_written++; + } + assert(num_written == ew->ehdr.e_phnum); } static void fixup_symbol_table(struct elf_writer *ew) -- cgit v1.2.3