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authorJulius Werner <jwerner@chromium.org>2019-05-07 17:29:21 -0700
committerPatrick Georgi <pgeorgi@google.com>2019-05-23 08:42:44 +0000
commite8e92d60c4e2a17542a98bdfb3a533060d26a281 (patch)
tree40fb303ed573e35be2711f593ff34af19c787221 /src/include/endian.h
parente6afab12e27df5c4adb7c6eaec1f71f825f9ad52 (diff)
downloadcoreboot-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/endian.h')
-rw-r--r--src/include/endian.h26
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.