From 4366e1db16a3ec7bf24171e5c7619c8ea038e43b Mon Sep 17 00:00:00 2001 From: Liam Merwick Date: Tue, 15 Jan 2019 12:18:03 +0000 Subject: elf: Add optional function ptr to load_elf() to parse ELF notes This patch adds an optional function pointer, 'elf_note_fn', to load_elf() which causes load_elf() to additionally parse any ELF program headers of type PT_NOTE and check to see if the ELF Note is of the type specified by the 'translate_opaque' arg. If a matching ELF Note is found then the specfied function pointer is called to process the ELF note. Passing a NULL function pointer results in ELF Notes being skipped. The first consumer of this functionality is the PVHboot support which needs to read the XEN_ELFNOTE_PHYS32_ENTRY ELF Note while loading the uncompressed kernel binary in order to discover the boot entry address for the x86/HVM direct boot ABI. Signed-off-by: Liam Merwick Signed-off-by: Paolo Bonzini --- hw/xtensa/sim.c | 12 ++++++++---- hw/xtensa/xtfpga.c | 2 +- 2 files changed, 9 insertions(+), 5 deletions(-) (limited to 'hw/xtensa') diff --git a/hw/xtensa/sim.c b/hw/xtensa/sim.c index b6ccb3c..12c7437 100644 --- a/hw/xtensa/sim.c +++ b/hw/xtensa/sim.c @@ -97,11 +97,15 @@ static void xtensa_sim_init(MachineState *machine) uint64_t elf_entry; uint64_t elf_lowaddr; #ifdef TARGET_WORDS_BIGENDIAN - int success = load_elf(kernel_filename, translate_phys_addr, cpu, - &elf_entry, &elf_lowaddr, NULL, 1, EM_XTENSA, 0, 0); + int success = load_elf(kernel_filename, NULL, + translate_phys_addr, cpu, + &elf_entry, &elf_lowaddr, + NULL, 1, EM_XTENSA, 0, 0); #else - int success = load_elf(kernel_filename, translate_phys_addr, cpu, - &elf_entry, &elf_lowaddr, NULL, 0, EM_XTENSA, 0, 0); + int success = load_elf(kernel_filename, NULL, + translate_phys_addr, cpu, + &elf_entry, &elf_lowaddr, + NULL, 0, EM_XTENSA, 0, 0); #endif if (success > 0) { env->pc = elf_entry; diff --git a/hw/xtensa/xtfpga.c b/hw/xtensa/xtfpga.c index 1d21162..ab3e52b 100644 --- a/hw/xtensa/xtfpga.c +++ b/hw/xtensa/xtfpga.c @@ -409,7 +409,7 @@ static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine) uint64_t elf_entry; uint64_t elf_lowaddr; - int success = load_elf(kernel_filename, translate_phys_addr, cpu, + int success = load_elf(kernel_filename, NULL, translate_phys_addr, cpu, &elf_entry, &elf_lowaddr, NULL, be, EM_XTENSA, 0, 0); if (success > 0) { entry_point = elf_entry; -- cgit v1.1