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| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-12-08 18:09:17 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-12-08 18:09:17 +0800 |
| commit | 14338e631afd6d4b2c2f8fb7deba786d86c40fad (patch) | |
| tree | cda6249166126aaa7225bf6b711c55777f23faf6 /arch/loongarch/kernel/syscall.c | |
| parent | 3f63ac8d287b2199318ee38975ed53894067fb65 (diff) | |
LoongArch: Adjust system call for 32BIT/64BIT
Adjust system call for both 32BIT and 64BIT, including: add the uapi
unistd_{32,64}.h and syscall_table_{32,64}.h inclusion, add sys_mmap2()
definition, change the system call entry routines, etc.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/syscall.c')
| -rw-r--r-- | arch/loongarch/kernel/syscall.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/syscall.c b/arch/loongarch/kernel/syscall.c index ab94eb5ce039..1249d82c1cd0 100644 --- a/arch/loongarch/kernel/syscall.c +++ b/arch/loongarch/kernel/syscall.c @@ -34,9 +34,22 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, unsigned long, return ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); } +SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, unsigned long, + prot, unsigned long, flags, unsigned long, fd, unsigned long, offset) +{ + if (offset & (~PAGE_MASK >> 12)) + return -EINVAL; + + return ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> (PAGE_SHIFT - 12)); +} + void *sys_call_table[__NR_syscalls] = { [0 ... __NR_syscalls - 1] = sys_ni_syscall, +#ifdef CONFIG_32BIT +#include <asm/syscall_table_32.h> +#else #include <asm/syscall_table_64.h> +#endif }; typedef long (*sys_call_fn)(unsigned long, unsigned long, |