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author | Aleksandar Markovic <amarkovic@wavecomp.com> | 2020-01-26 23:55:04 +0100 |
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committer | Aleksandar Markovic <amarkovic@wavecomp.com> | 2020-01-29 19:28:52 +0100 |
commit | 6cdda0ff4bad7edbb4c94a52234138bf2ac9a6b6 (patch) | |
tree | 0b4e5c07e07eb84845c97019013e80486bdb4e42 /hw/core/loader.c | |
parent | 54fc33fdc4b06d63aa67d7af6da457ab5df62bb1 (diff) | |
download | qemu-6cdda0ff4bad7edbb4c94a52234138bf2ac9a6b6.zip qemu-6cdda0ff4bad7edbb4c94a52234138bf2ac9a6b6.tar.gz qemu-6cdda0ff4bad7edbb4c94a52234138bf2ac9a6b6.tar.bz2 |
hw/core/loader: Let load_elf() populate a field with CPU-specific flags
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>
Diffstat (limited to 'hw/core/loader.c')
-rw-r--r-- | hw/core/loader.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/hw/core/loader.c b/hw/core/loader.c index 5099f27..d1b78f6 100644 --- a/hw/core/loader.c +++ b/hw/core/loader.c @@ -406,12 +406,12 @@ int load_elf(const char *filename, uint64_t (*elf_note_fn)(void *, void *, bool), uint64_t (*translate_fn)(void *, uint64_t), void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, - uint64_t *highaddr, int big_endian, int elf_machine, - int clear_lsb, int data_swab) + uint64_t *highaddr, uint32_t *pflags, int big_endian, + int elf_machine, int clear_lsb, int data_swab) { return load_elf_as(filename, elf_note_fn, translate_fn, translate_opaque, - pentry, lowaddr, highaddr, big_endian, elf_machine, - clear_lsb, data_swab, NULL); + pentry, lowaddr, highaddr, pflags, big_endian, + elf_machine, clear_lsb, data_swab, NULL); } /* return < 0 if error, otherwise the number of bytes loaded in memory */ @@ -419,12 +419,12 @@ int load_elf_as(const char *filename, uint64_t (*elf_note_fn)(void *, void *, bool), uint64_t (*translate_fn)(void *, uint64_t), void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, - uint64_t *highaddr, int big_endian, int elf_machine, - int clear_lsb, int data_swab, AddressSpace *as) + uint64_t *highaddr, uint32_t *pflags, int big_endian, + int elf_machine, int clear_lsb, int data_swab, AddressSpace *as) { return load_elf_ram(filename, elf_note_fn, translate_fn, translate_opaque, - pentry, lowaddr, highaddr, big_endian, elf_machine, - clear_lsb, data_swab, as, true); + pentry, lowaddr, highaddr, pflags, big_endian, + elf_machine, clear_lsb, data_swab, as, true); } /* return < 0 if error, otherwise the number of bytes loaded in memory */ @@ -432,13 +432,13 @@ int load_elf_ram(const char *filename, uint64_t (*elf_note_fn)(void *, void *, bool), uint64_t (*translate_fn)(void *, uint64_t), void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, - uint64_t *highaddr, int big_endian, int elf_machine, - int clear_lsb, int data_swab, AddressSpace *as, - bool load_rom) + uint64_t *highaddr, uint32_t *pflags, int big_endian, + int elf_machine, int clear_lsb, int data_swab, + AddressSpace *as, bool load_rom) { return load_elf_ram_sym(filename, elf_note_fn, translate_fn, translate_opaque, - pentry, lowaddr, highaddr, big_endian, + pentry, lowaddr, highaddr, pflags, big_endian, elf_machine, clear_lsb, data_swab, as, load_rom, NULL); } @@ -448,8 +448,9 @@ int load_elf_ram_sym(const char *filename, uint64_t (*elf_note_fn)(void *, void *, bool), uint64_t (*translate_fn)(void *, uint64_t), void *translate_opaque, uint64_t *pentry, - uint64_t *lowaddr, uint64_t *highaddr, int big_endian, - int elf_machine, int clear_lsb, int data_swab, + uint64_t *lowaddr, uint64_t *highaddr, uint32_t *pflags, + int big_endian, int elf_machine, + int clear_lsb, int data_swab, AddressSpace *as, bool load_rom, symbol_fn_t sym_cb) { int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED; @@ -490,13 +491,13 @@ int load_elf_ram_sym(const char *filename, if (e_ident[EI_CLASS] == ELFCLASS64) { ret = load_elf64(filename, fd, elf_note_fn, translate_fn, translate_opaque, must_swab, - pentry, lowaddr, highaddr, elf_machine, clear_lsb, - data_swab, as, load_rom, sym_cb); + pentry, lowaddr, highaddr, pflags, elf_machine, + clear_lsb, data_swab, as, load_rom, sym_cb); } else { ret = load_elf32(filename, fd, elf_note_fn, translate_fn, translate_opaque, must_swab, - pentry, lowaddr, highaddr, elf_machine, clear_lsb, - data_swab, as, load_rom, sym_cb); + pentry, lowaddr, highaddr, pflags, elf_machine, + clear_lsb, data_swab, as, load_rom, sym_cb); } fail: |