From f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 Mon Sep 17 00:00:00 2001 From: Thomas Bertschinger Date: Mon, 15 Jan 2024 23:41:02 -0700 Subject: move Rust sources to top level, C sources into c_src This moves the Rust sources out of rust_src/ and into the top level. Running the bcachefs executable out of the development tree is now: $ ./target/release/bcachefs command or $ cargo run --profile release -- command instead of "./bcachefs command". Building and installing is still: $ make && make install Signed-off-by: Thomas Bertschinger Signed-off-by: Kent Overstreet --- c_src/include/linux/unaligned/generic.h | 68 +++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 c_src/include/linux/unaligned/generic.h (limited to 'c_src/include/linux/unaligned/generic.h') diff --git a/c_src/include/linux/unaligned/generic.h b/c_src/include/linux/unaligned/generic.h new file mode 100644 index 00000000..02d97ff3 --- /dev/null +++ b/c_src/include/linux/unaligned/generic.h @@ -0,0 +1,68 @@ +#ifndef _LINUX_UNALIGNED_GENERIC_H +#define _LINUX_UNALIGNED_GENERIC_H + +/* + * Cause a link-time error if we try an unaligned access other than + * 1,2,4 or 8 bytes long + */ +extern void __bad_unaligned_access_size(void); + +#define __get_unaligned_le(ptr) ((__force typeof(*(ptr)))({ \ + __builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ + __builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_le16((ptr)), \ + __builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_le32((ptr)), \ + __builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_le64((ptr)), \ + __bad_unaligned_access_size())))); \ + })) + +#define __get_unaligned_be(ptr) ((__force typeof(*(ptr)))({ \ + __builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ + __builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_be16((ptr)), \ + __builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_be32((ptr)), \ + __builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_be64((ptr)), \ + __bad_unaligned_access_size())))); \ + })) + +#define __put_unaligned_le(val, ptr) ({ \ + void *__gu_p = (ptr); \ + switch (sizeof(*(ptr))) { \ + case 1: \ + *(u8 *)__gu_p = (__force u8)(val); \ + break; \ + case 2: \ + put_unaligned_le16((__force u16)(val), __gu_p); \ + break; \ + case 4: \ + put_unaligned_le32((__force u32)(val), __gu_p); \ + break; \ + case 8: \ + put_unaligned_le64((__force u64)(val), __gu_p); \ + break; \ + default: \ + __bad_unaligned_access_size(); \ + break; \ + } \ + (void)0; }) + +#define __put_unaligned_be(val, ptr) ({ \ + void *__gu_p = (ptr); \ + switch (sizeof(*(ptr))) { \ + case 1: \ + *(u8 *)__gu_p = (__force u8)(val); \ + break; \ + case 2: \ + put_unaligned_be16((__force u16)(val), __gu_p); \ + break; \ + case 4: \ + put_unaligned_be32((__force u32)(val), __gu_p); \ + break; \ + case 8: \ + put_unaligned_be64((__force u64)(val), __gu_p); \ + break; \ + default: \ + __bad_unaligned_access_size(); \ + break; \ + } \ + (void)0; }) + +#endif /* _LINUX_UNALIGNED_GENERIC_H */ -- cgit v1.2.3