From e8e92d60c4e2a17542a98bdfb3a533060d26a281 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Tue, 7 May 2019 17:29:21 -0700 Subject: endian.h: Add be32dec/be32enc family of functions Libpayload has a family of functions that can "encode" or "decode" an endian-specific integer onto a byte stream pointer. These allow writing more pretty code than a raw be32_to_cpu/cpu_to_be32 with pointer casts in many (de-)serialization scenarios, so let's add them to coreboot as well. Change-Id: I049c5665484da12b3cf977a529310b0bde177d2d Signed-off-by: Julius Werner Reviewed-on: https://review.coreboot.org/c/coreboot/+/32856 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/include/endian.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'src') diff --git a/src/include/endian.h b/src/include/endian.h index 08636f3da6..8dc18542ae 100644 --- a/src/include/endian.h +++ b/src/include/endian.h @@ -85,6 +85,32 @@ #define setbits_8(addr, set) setbits_8(addr, 0, set) #ifndef __ROMCC__ +/* be16dec/be32dec/be64dec/le16dec/le32dec/le64dec family of functions. */ +#define DEFINE_ENDIAN_DEC(endian, width) \ + static inline uint##width##_t endian##width##dec(const void *p) \ + { \ + return endian##width##_to_cpu(*(uint##width##_t *)p); \ + } +DEFINE_ENDIAN_DEC(be, 16) +DEFINE_ENDIAN_DEC(be, 32) +DEFINE_ENDIAN_DEC(be, 64) +DEFINE_ENDIAN_DEC(le, 16) +DEFINE_ENDIAN_DEC(le, 32) +DEFINE_ENDIAN_DEC(le, 64) + +/* be16enc/be32enc/be64enc/le16enc/le32enc/le64enc family of functions. */ +#define DEFINE_ENDIAN_ENC(endian, width) \ + static inline void endian##width##enc(void *p, uint##width##_t u) \ + { \ + *(uint##width##_t *)p = cpu_to_##endian##width(u); \ + } +DEFINE_ENDIAN_ENC(be, 16) +DEFINE_ENDIAN_ENC(be, 32) +DEFINE_ENDIAN_ENC(be, 64) +DEFINE_ENDIAN_ENC(le, 16) +DEFINE_ENDIAN_ENC(le, 32) +DEFINE_ENDIAN_ENC(le, 64) + /* * Portable (API) endian support that can be used in code that is shared * with userspace (man 3 endian) tools. -- cgit v1.2.3