SeaBIOS until now only supported the little-endian x86 platform. PA-RISC is big endian, so add the necessary conversion functions depending on the architecture.
Signed-off-by: Helge Deller <[email protected]> --- src/byteorder.h | 74 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/src/byteorder.h b/src/byteorder.h index 928c1b8..f0dffa3 100644 --- a/src/byteorder.h +++ b/src/byteorder.h @@ -1,8 +1,17 @@ #ifndef __BYTEORDER_H #define __BYTEORDER_H +#include "autoconf.h" #include "types.h" // u32 +#if CONFIG_X86 +#define TARGET_LITTLE_ENDIAN +#elif CONFIG_PARISC +#define TARGET_BIG_ENDIAN +#else +#error "unknown endianess" +#endif + static inline u16 __swab16_constant(u16 val) { return (val<<8) | (val>>8); } @@ -13,7 +22,18 @@ static inline u64 __swab64_constant(u64 val) { return ((u64)__swab32_constant(val) << 32) | __swab32_constant(val>>32); } static inline u32 __swab32(u32 val) { +#if CONFIG_X86 asm("bswapl %0" : "+r"(val)); +#elif CONFIG_PARISC + unsigned int temp; + asm("shd %0, %0, 16, %1\n\t" /* shift abcdabcd -> cdab */ + "dep %1, 15, 8, %1\n\t" /* deposit cdab -> cbab */ + "shd %0, %1, 8, %0" /* shift abcdcbab -> dcba */ + : "=r" (val), "=&r" (temp) + : "0" (val)); +#else + #error "unknown arch" +#endif return val; } static inline u64 __swab64(u64 val) { @@ -30,6 +50,55 @@ static inline u64 __swab64(u64 val) { #define swab64(x) (__builtin_constant_p((u64)(x)) \ ? __swab64_constant(x) : __swab64(x)) +#if defined(TARGET_BIG_ENDIAN) +static inline u16 cpu_to_le16(u16 x) { + return swab16(x); +} +static inline u32 cpu_to_le32(u32 x) { + return swab32(x); +} +static inline u64 cpu_to_le64(u64 x) { + return swab64(x); +} +static inline u16 le16_to_cpu(u16 x) { + return swab16(x); +} +static inline u32 le32_to_cpu(u32 x) { + return swab32(x); +} +static inline u64 le64_to_cpu(u64 x) { + return swab64(x); +} + +static inline u16 cpu_to_be16(u16 x) { + return x; +} +static inline u32 cpu_to_be32(u32 x) { + return x; +} +static inline u64 cpu_to_be64(u64 x) { + return x; +} +static inline u16 be16_to_cpu(u16 x) { + return x; +} +static inline u32 be32_to_cpu(u32 x) { + return x; +} +static inline u64 be64_to_cpu(u64 x) { + return x; +} + +static inline void convert_to_le32(u32 *script, unsigned long bytes) +{ + while (bytes > 0) { + *script = cpu_to_le32(*script); + script++; + bytes -= sizeof(u32); + } +} + +#else /* defined(TARGET_LITTLE_ENDIAN) */ static inline u16 cpu_to_le16(u16 x) { return x; } @@ -68,4 +137,9 @@ static inline u64 be64_to_cpu(u64 x) { return swab64(x); } +static inline void convert_to_le32(u32 *script, unsigned long bytes) +{ +} +#endif + #endif // byteorder.h -- 2.29.2 _______________________________________________ SeaBIOS mailing list -- [email protected] To unsubscribe send an email to [email protected]
