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authorPeter Crosthwaite <crosthwaitepeter@gmail.com>2016-03-04 11:30:21 +0000
committerPeter Maydell <peter.maydell@linaro.org>2016-03-04 11:30:21 +0000
commit7ef295ea5b412cbaf82f719ccd49efb51296e841 (patch)
treeda99e5270fcf99285c0b5dfb787c4b304687843a /hw/ppc
parent140b7ce5fff6fc660b2484dfd9d33ed2e42ec5a9 (diff)
loader: Add data swap option to load-elf
Some CPUs are of an opposite data-endianness to other components in the system. Sometimes elfs have the data sections layed out with this CPU data-endianness accounting for when loaded via the CPU, so byte swaps (relative to other system components) will occur. The leading example, is ARM's BE32 mode, which is is basically LE with address manipulation on half-word and byte accesses to access the hw/byte reversed address. This means that word data is invariant across LE and BE32. This also means that instructions are still LE. The expectation is that the elf will be loaded via the CPU in this endianness scheme, which means the data in the elf is reversed at compile time. As QEMU loads via the system memory directly, rather than the CPU, we need a mechanism to reverse elf data endianness to implement this possibility. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/ppc')
-rw-r--r--hw/ppc/e500.c2
-rw-r--r--hw/ppc/mac_newworld.c5
-rw-r--r--hw/ppc/mac_oldworld.c5
-rw-r--r--hw/ppc/ppc440_bamboo.c3
-rw-r--r--hw/ppc/spapr.c6
-rw-r--r--hw/ppc/virtex_ml507.c3
6 files changed, 15 insertions, 9 deletions
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index bd84e9ac13..09154fa813 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -1017,7 +1017,7 @@ void ppce500_init(MachineState *machine, PPCE500Params *params)
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
bios_size = load_elf(filename, NULL, NULL, &bios_entry, &loadaddr, NULL,
- 1, PPC_ELF_MACHINE, 0);
+ 1, PPC_ELF_MACHINE, 0, 0);
if (bios_size < 0) {
/*
* Hrm. No ELF image? Try a uImage, maybe someone is giving us an
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index f95086b787..f0a36b3133 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -221,7 +221,7 @@ static void ppc_core99_init(MachineState *machine)
/* Load OpenBIOS (ELF) */
if (filename) {
bios_size = load_elf(filename, NULL, NULL, NULL,
- NULL, NULL, 1, PPC_ELF_MACHINE, 0);
+ NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0);
g_free(filename);
} else {
@@ -244,7 +244,8 @@ static void ppc_core99_init(MachineState *machine)
kernel_base = KERNEL_LOAD_ADDR;
kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
- NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE, 0);
+ NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
+ 0, 0);
if (kernel_size < 0)
kernel_size = load_aout(kernel_filename, kernel_base,
ram_size - kernel_base, bswap_needed,
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 898439860c..d952713313 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -149,7 +149,7 @@ static void ppc_heathrow_init(MachineState *machine)
/* Load OpenBIOS (ELF) */
if (filename) {
bios_size = load_elf(filename, 0, NULL, NULL, NULL, NULL,
- 1, PPC_ELF_MACHINE, 0);
+ 1, PPC_ELF_MACHINE, 0, 0);
g_free(filename);
} else {
bios_size = -1;
@@ -170,7 +170,8 @@ static void ppc_heathrow_init(MachineState *machine)
#endif
kernel_base = KERNEL_LOAD_ADDR;
kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
- NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE, 0);
+ NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
+ 0, 0);
if (kernel_size < 0)
kernel_size = load_aout(kernel_filename, kernel_base,
ram_size - kernel_base, bswap_needed,
diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
index e535a9f266..5c535b18a2 100644
--- a/hw/ppc/ppc440_bamboo.c
+++ b/hw/ppc/ppc440_bamboo.c
@@ -256,7 +256,8 @@ static void bamboo_init(MachineState *machine)
NULL, NULL);
if (success < 0) {
success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
- &elf_lowaddr, NULL, 1, PPC_ELF_MACHINE, 0);
+ &elf_lowaddr, NULL, 1, PPC_ELF_MACHINE,
+ 0, 0);
entry = elf_entry;
loadaddr = elf_lowaddr;
}
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index e9d4abf06a..64c4acce06 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1942,11 +1942,13 @@ static void ppc_spapr_init(MachineState *machine)
uint64_t lowaddr = 0;
kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
- NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE, 0);
+ NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
+ 0, 0);
if (kernel_size == ELF_LOAD_WRONG_ENDIAN) {
kernel_size = load_elf(kernel_filename,
translate_kernel_address, NULL,
- NULL, &lowaddr, NULL, 0, PPC_ELF_MACHINE, 0);
+ NULL, &lowaddr, NULL, 0, PPC_ELF_MACHINE,
+ 0, 0);
kernel_le = kernel_size > 0;
}
if (kernel_size < 0) {
diff --git a/hw/ppc/virtex_ml507.c b/hw/ppc/virtex_ml507.c
index a902c88277..b807a08c28 100644
--- a/hw/ppc/virtex_ml507.c
+++ b/hw/ppc/virtex_ml507.c
@@ -258,7 +258,8 @@ static void virtex_init(MachineState *machine)
/* Boots a kernel elf binary. */
kernel_size = load_elf(kernel_filename, NULL, NULL,
- &entry, &low, &high, 1, PPC_ELF_MACHINE, 0);
+ &entry, &low, &high, 1, PPC_ELF_MACHINE,
+ 0, 0);
boot_info.bootstrap_pc = entry & 0x00ffffff;
if (kernel_size < 0) {