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| author |   Guo Ren <guoren@linux.alibaba.com> | 2022-04-05 15:13:05 +0800 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2022-04-26 13:36:25 -0700 |
| commit | 59c10c52f573faca862cda5ebcdd43831608eb5a (patch) | |
| tree | 786a8dd25890ba8b97f07f01011c02d4a869ad08 /include/asm-generic | |
| parent | riscv: compat: Support TASK_SIZE for compat mode (diff) | |
| download | linux-dev-59c10c52f573faca862cda5ebcdd43831608eb5a.tar.xz linux-dev-59c10c52f573faca862cda5ebcdd43831608eb5a.zip | |
riscv: compat: syscall: Add compat_sys_call_table implementation
Implement compat sys_call_table and some system call functions:
truncate64, ftruncate64, fallocate, pread64, pwrite64,
sync_file_range, readahead, fadvise64_64 which need argument
translation.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-12-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/compat.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-generic/compat.h b/include/asm-generic/compat.h index 11653d6846cc..d06308a2a7a8 100644 --- a/include/asm-generic/compat.h +++ b/include/asm-generic/compat.h @@ -14,6 +14,13 @@ #define COMPAT_OFF_T_MAX 0x7fffffff #endif +#if !defined(compat_arg_u64) && !defined(CONFIG_CPU_BIG_ENDIAN) +#define compat_arg_u64(name) u32 name##_lo, u32 name##_hi +#define compat_arg_u64_dual(name) u32, name##_lo, u32, name##_hi +#define compat_arg_u64_glue(name) (((u64)name##_lo & 0xffffffffUL) | \ + ((u64)name##_hi << 32)) +#endif + /* These types are common across all compat ABIs */ typedef u32 compat_size_t; typedef s32 compat_ssize_t; |