diff options
| -rw-r--r-- | arch/loongarch/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/loongarch/include/uapi/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/loongarch/include/uapi/asm/unistd.h | 6 | ||||
| -rw-r--r-- | arch/loongarch/kernel/Makefile.syscalls | 1 | ||||
| -rw-r--r-- | arch/loongarch/kernel/entry.S | 22 | ||||
| -rw-r--r-- | arch/loongarch/kernel/syscall.c | 13 |
6 files changed, 33 insertions, 11 deletions
diff --git a/arch/loongarch/include/asm/Kbuild b/arch/loongarch/include/asm/Kbuild index b04d2cef935f..9034b583a88a 100644 --- a/arch/loongarch/include/asm/Kbuild +++ b/arch/loongarch/include/asm/Kbuild @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 +syscall-y += syscall_table_32.h syscall-y += syscall_table_64.h generated-y += orc_hash.h diff --git a/arch/loongarch/include/uapi/asm/Kbuild b/arch/loongarch/include/uapi/asm/Kbuild index 517761419999..89ac01faa5ae 100644 --- a/arch/loongarch/include/uapi/asm/Kbuild +++ b/arch/loongarch/include/uapi/asm/Kbuild @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 +syscall-y += unistd_32.h syscall-y += unistd_64.h diff --git a/arch/loongarch/include/uapi/asm/unistd.h b/arch/loongarch/include/uapi/asm/unistd.h index 1f01980f9c94..e19c7f2f9f87 100644 --- a/arch/loongarch/include/uapi/asm/unistd.h +++ b/arch/loongarch/include/uapi/asm/unistd.h @@ -1,3 +1,9 @@ /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#include <asm/bitsperlong.h> + +#if __BITS_PER_LONG == 32 +#include <asm/unistd_32.h> +#else #include <asm/unistd_64.h> +#endif diff --git a/arch/loongarch/kernel/Makefile.syscalls b/arch/loongarch/kernel/Makefile.syscalls index ab7d9baa2915..cd46c2b69c7f 100644 --- a/arch/loongarch/kernel/Makefile.syscalls +++ b/arch/loongarch/kernel/Makefile.syscalls @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 # No special ABIs on loongarch so far +syscall_abis_32 += syscall_abis_64 += diff --git a/arch/loongarch/kernel/entry.S b/arch/loongarch/kernel/entry.S index 47e1db9a1ce4..b53d333a7c42 100644 --- a/arch/loongarch/kernel/entry.S +++ b/arch/loongarch/kernel/entry.S @@ -23,24 +23,24 @@ SYM_CODE_START(handle_syscall) UNWIND_HINT_UNDEFINED csrrd t0, PERCPU_BASE_KS la.pcrel t1, kernelsp - add.d t1, t1, t0 + PTR_ADD t1, t1, t0 move t2, sp - ld.d sp, t1, 0 + PTR_L sp, t1, 0 - addi.d sp, sp, -PT_SIZE + PTR_ADDI sp, sp, -PT_SIZE cfi_st t2, PT_R3 cfi_rel_offset sp, PT_R3 - st.d zero, sp, PT_R0 + LONG_S zero, sp, PT_R0 csrrd t2, LOONGARCH_CSR_PRMD - st.d t2, sp, PT_PRMD + LONG_S t2, sp, PT_PRMD csrrd t2, LOONGARCH_CSR_CRMD - st.d t2, sp, PT_CRMD + LONG_S t2, sp, PT_CRMD csrrd t2, LOONGARCH_CSR_EUEN - st.d t2, sp, PT_EUEN + LONG_S t2, sp, PT_EUEN csrrd t2, LOONGARCH_CSR_ECFG - st.d t2, sp, PT_ECFG + LONG_S t2, sp, PT_ECFG csrrd t2, LOONGARCH_CSR_ESTAT - st.d t2, sp, PT_ESTAT + LONG_S t2, sp, PT_ESTAT cfi_st ra, PT_R1 cfi_st a0, PT_R4 cfi_st a1, PT_R5 @@ -51,7 +51,7 @@ SYM_CODE_START(handle_syscall) cfi_st a6, PT_R10 cfi_st a7, PT_R11 csrrd ra, LOONGARCH_CSR_ERA - st.d ra, sp, PT_ERA + LONG_S ra, sp, PT_ERA cfi_rel_offset ra, PT_ERA cfi_st tp, PT_R2 @@ -67,7 +67,7 @@ SYM_CODE_START(handle_syscall) #endif move u0, t0 - li.d tp, ~_THREAD_MASK + LONG_LI tp, ~_THREAD_MASK and tp, tp, sp move a0, sp 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, |