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| author | Julius Werner <jwerner@chromium.org> | 2019-05-07 17:29:21 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-05-23 08:42:44 +0000 |
| commit | e8e92d60c4e2a17542a98bdfb3a533060d26a281 (patch) | |
| tree | 40fb303ed573e35be2711f593ff34af19c787221 /src/include | |
| parent | e6afab12e27df5c4adb7c6eaec1f71f825f9ad52 (diff) | |
| download | coreboot-e8e92d60c4e2a17542a98bdfb3a533060d26a281.tar.xz | |
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 <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32856
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/endian.h | 26 |
1 files changed, 26 insertions, 0 deletions
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. |