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efi/libstub: Annotate firmware routines as __efiapi

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Annotate all the firmware routines (boot services, runtime services and
protocol methods) called in the boot context as __efiapi, and make
it expand to __attribute__((ms_abi)) on 64-bit x86. This allows us
to use the compiler to generate the calls into firmware that use the
MS calling convention instead of the SysV one.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-13-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ard Biesheuvel
2019-12-24 16:10:12 +01:00
committed by Ingo Molnar
parent 960a8d0183
commit 8f24f8c2fc
4 changed files with 96 additions and 76 deletions
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10
drivers/firmware/efi/libstub/random.c
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@@ -13,10 +13,12 @@ typedef union efi_rng_protocol efi_rng_protocol_t;
union efi_rng_protocol {
struct {
efi_status_t (*get_info)(efi_rng_protocol_t *,
unsigned long *, efi_guid_t *);
efi_status_t (*get_rng)(efi_rng_protocol_t *,
efi_guid_t *, unsigned long, u8 *out);
efi_status_t (__efiapi *get_info)(efi_rng_protocol_t *,
unsigned long *,
efi_guid_t *);
efi_status_t (__efiapi *get_rng)(efi_rng_protocol_t *,
efi_guid_t *, unsigned long,
u8 *out);
};
struct {
u32 get_info;