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efi_loader: use library memcpy() in helloworld.efi

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Helloworld does not need its own memcpy() implementation anymore. Use the
one provided in efi_freestanding.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2019-01-20 08:20:32 +01:00 • committed by Alexander Graf
parent 2013c6850e
commit 6446304460
1 changed files with 6 additions and 30 deletions
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36
lib/efi_loader/helloworld.c
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@ -17,30 +17,6 @@ static const efi_guid_t fdt_guid = EFI_FDT_GUID;
static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID; static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID; static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
/**
* hw_memcmp() - compare memory areas
*
* @buf1: pointer to first area
* @buf2: pointer to second area
* @length: number of bytes to compare
* Return: 0 if both memory areas are the same, otherwise the sign of the
* result value is the same as the sign of ghe difference between
* the first differing pair of bytes taken as u8.
*/
static int hw_memcmp(const void *buf1, const void *buf2, size_t length)
{
const u8 *pos1 = buf1;
const u8 *pos2 = buf2;
for (; length; --length) {
if (*pos1 != *pos2)
return *pos1 - *pos2;
++pos1;
++pos2;
}
return 0;
}
/** /**
* efi_main() - entry point of the EFI application. * efi_main() - entry point of the EFI application.
* *
@ -88,16 +64,16 @@ efi_status_t EFIAPI efi_main(efi_handle_t handle,
} }
/* Find configuration tables */ /* Find configuration tables */
for (i = 0; i < systable->nr_tables; ++i) { for (i = 0; i < systable->nr_tables; ++i) {
if (!hw_memcmp(&systable->tables[i].guid, &fdt_guid, if (!memcmp(&systable->tables[i].guid, &fdt_guid,
sizeof(efi_guid_t))) sizeof(efi_guid_t)))
con_out->output_string con_out->output_string
(con_out, L"Have device tree\r\n"); (con_out, L"Have device tree\r\n");
if (!hw_memcmp(&systable->tables[i].guid, &acpi_guid, if (!memcmp(&systable->tables[i].guid, &acpi_guid,
sizeof(efi_guid_t))) sizeof(efi_guid_t)))
con_out->output_string con_out->output_string
(con_out, L"Have ACPI 2.0 table\r\n"); (con_out, L"Have ACPI 2.0 table\r\n");
if (!hw_memcmp(&systable->tables[i].guid, &smbios_guid, if (!memcmp(&systable->tables[i].guid, &smbios_guid,
sizeof(efi_guid_t))) sizeof(efi_guid_t)))
con_out->output_string con_out->output_string
(con_out, L"Have SMBIOS table\r\n"); (con_out, L"Have SMBIOS table\r\n");
} }