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hw/core/loader: Let load_elf() populate a field with CPU-specific flags

Browse source 
While loading the executable, some platforms (like AVR) need to
detect CPU type that executable is built for - and, with this patch,
this is enabled by reading the field 'e_flags' of the ELF header of
the executable in question. The change expands functionality of
the following functions:

  - load_elf()
  - load_elf_as()
  - load_elf_ram()
  - load_elf_ram_sym()

The argument added to these functions is called 'pflags' and is of
type 'uint32_t*' (that matches 'pointer to 'elf_word'', 'elf_word'
being the type of the field 'e_flags', in both 32-bit and 64-bit
variants of ELF header). Callers are allowed to pass NULL as that
argument, and in such case no lookup to the field 'e_flags' will
happen, and no information will be returned, of course.

CC: Richard Henderson <rth@twiddle.net>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Edgar E. Iglesias <edgar.iglesias@gmail.com>
CC: Michael Walle <michael@walle.cc>
CC: Thomas Huth <huth@tuxfamily.org>
CC: Laurent Vivier <laurent@vivier.eu>
CC: Philippe Mathieu-Daudé <f4bug@amsat.org>
CC: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
CC: Aurelien Jarno <aurelien@aurel32.net>
CC: Jia Liu <proljc@gmail.com>
CC: David Gibson <david@gibson.dropbear.id.au>
CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: BALATON Zoltan <balaton@eik.bme.hu>
CC: Christian Borntraeger <borntraeger@de.ibm.com>
CC: Thomas Huth <thuth@redhat.com>
CC: Artyom Tarasenko <atar4qemu@gmail.com>
CC: Fabien Chouteau <chouteau@adacore.com>
CC: KONRAD Frederic <frederic.konrad@adacore.com>
CC: Max Filippov <jcmvbkbc@gmail.com>

Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
Signed-off-by: Michael Rolnik <mrolnik@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1580079311-20447-24-git-send-email-aleksandar.markovic@rt-rk.com>
This commit is contained in:
Aleksandar Markovic 2020-01-26 23:55:04 +01:00
parent 54fc33fdc4
commit 6cdda0ff4b
40 changed files with 92 additions and 79 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hw/ppc/e500.c
View file

@ -1049,7 +1049,7 @@ void ppce500_init(MachineState *machine)
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, payload_name);
payload_size = load_elf(filename, NULL, NULL, NULL,
&bios_entry, &loadaddr, NULL,
&bios_entry, &loadaddr, NULL, NULL,
1, PPC_ELF_MACHINE, 0, 0);
if (payload_size < 0) {
/*

4
hw/ppc/mac_newworld.c
View file

@ -168,7 +168,7 @@ static void ppc_core99_init(MachineState *machine)
/* Load OpenBIOS (ELF) */
if (filename) {
bios_size = load_elf(filename, NULL, NULL, NULL, NULL,
NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0);
NULL, NULL, NULL, 1, PPC_ELF_MACHINE, 0, 0);
g_free(filename);
} else {
@ -192,7 +192,7 @@ static void ppc_core99_init(MachineState *machine)
kernel_size = load_elf(kernel_filename, NULL,
translate_kernel_address, NULL,
NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
NULL, &lowaddr, NULL, NULL, 1, PPC_ELF_MACHINE,
0, 0);
if (kernel_size < 0)
kernel_size = load_aout(kernel_filename, kernel_base,

4
hw/ppc/mac_oldworld.c
View file

@ -143,7 +143,7 @@ static void ppc_heathrow_init(MachineState *machine)
/* Load OpenBIOS (ELF) */
if (filename) {
bios_size = load_elf(filename, NULL, 0, NULL, NULL, NULL, NULL,
bios_size = load_elf(filename, NULL, 0, NULL, NULL, NULL, NULL, NULL,
1, PPC_ELF_MACHINE, 0, 0);
g_free(filename);
} else {
@ -166,7 +166,7 @@ static void ppc_heathrow_init(MachineState *machine)
kernel_base = KERNEL_LOAD_ADDR;
kernel_size = load_elf(kernel_filename, NULL,
translate_kernel_address, NULL,
NULL, &lowaddr, NULL, 1, PPC_ELF_MACHINE,
NULL, &lowaddr, NULL, NULL, 1, PPC_ELF_MACHINE,
0, 0);
if (kernel_size < 0)
kernel_size = load_aout(kernel_filename, kernel_base,

2
hw/ppc/ppc440_bamboo.c
View file

@ -253,7 +253,7 @@ static void bamboo_init(MachineState *machine)
NULL, NULL);
if (success < 0) {
success = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry,
&elf_lowaddr, NULL, 1, PPC_ELF_MACHINE,
&elf_lowaddr, NULL, NULL, 1, PPC_ELF_MACHINE,
0, 0);
entry = elf_entry;
loadaddr = elf_lowaddr;

3
hw/ppc/sam460ex.c
View file

@ -439,7 +439,8 @@ static void sam460ex_init(MachineState *machine)
success = load_elf(machine->kernel_filename, NULL,
NULL, NULL, &elf_entry,
&elf_lowaddr, NULL, 1, PPC_ELF_MACHINE, 0, 0);
&elf_lowaddr, NULL, NULL, 1, PPC_ELF_MACHINE, 0,
0);
entry = elf_entry;
loadaddr = elf_lowaddr;
}

6
hw/ppc/spapr.c
View file

@ -2895,13 +2895,13 @@ static void spapr_machine_init(MachineState *machine)
spapr->kernel_size = load_elf(kernel_filename, NULL,
translate_kernel_address, NULL,
NULL, &lowaddr, NULL, 1,
NULL, &lowaddr, NULL, NULL, 1,
PPC_ELF_MACHINE, 0, 0);
if (spapr->kernel_size == ELF_LOAD_WRONG_ENDIAN) {
spapr->kernel_size = load_elf(kernel_filename, NULL,
translate_kernel_address, NULL, NULL,
&lowaddr, NULL, 0, PPC_ELF_MACHINE,
0, 0);
&lowaddr, NULL, NULL, 0,
PPC_ELF_MACHINE, 0, 0);
spapr->kernel_le = spapr->kernel_size > 0;
}
if (spapr->kernel_size < 0) {

2
hw/ppc/virtex_ml507.c
View file

@ -259,7 +259,7 @@ static void virtex_init(MachineState *machine)
/* Boots a kernel elf binary. */
kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
&entry, &low, &high, 1, PPC_ELF_MACHINE,
&entry, &low, &high, NULL, 1, PPC_ELF_MACHINE,
0, 0);
boot_info.bootstrap_pc = entry & 0x00ffffff;