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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:21:31 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:21:31 +0000 |
| commit | 5dca02f2ee931aef66bb21dd8067c8b1af1e0d3e (patch) | |
| tree | 6581b770eb1bd6cac1252a5451b89c092ea4c797 /arch/nios2/kernel/entry.S | |
| parent | Adding debian version 4.19.249-2. (diff) | |
| download | linux-5dca02f2ee931aef66bb21dd8067c8b1af1e0d3e.tar.xz linux-5dca02f2ee931aef66bb21dd8067c8b1af1e0d3e.zip | |
Merging upstream version 4.19.260.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/nios2/kernel/entry.S')
| -rw-r--r-- | arch/nios2/kernel/entry.S | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/nios2/kernel/entry.S b/arch/nios2/kernel/entry.S index 1e515ccd6..af5565882 100644 --- a/arch/nios2/kernel/entry.S +++ b/arch/nios2/kernel/entry.S @@ -185,6 +185,7 @@ ENTRY(handle_system_call) ldw r5, PT_R5(sp) local_restart: + stw r2, PT_ORIG_R2(sp) /* Check that the requested system call is within limits */ movui r1, __NR_syscalls bgeu r2, r1, ret_invsyscall @@ -192,7 +193,6 @@ local_restart: movhi r11, %hiadj(sys_call_table) add r1, r1, r11 ldw r1, %lo(sys_call_table)(r1) - beq r1, r0, ret_invsyscall /* Check if we are being traced */ GET_THREAD_INFO r11 @@ -213,6 +213,9 @@ local_restart: translate_rc_and_ret: movi r1, 0 bge r2, zero, 3f + ldw r1, PT_ORIG_R2(sp) + addi r1, r1, 1 + beq r1, zero, 3f sub r2, zero, r2 movi r1, 1 3: @@ -255,9 +258,9 @@ traced_system_call: ldw r6, PT_R6(sp) ldw r7, PT_R7(sp) - /* Fetch the syscall function, we don't need to check the boundaries - * since this is already done. - */ + /* Fetch the syscall function. */ + movui r1, __NR_syscalls + bgeu r2, r1, traced_invsyscall slli r1, r2, 2 movhi r11,%hiadj(sys_call_table) add r1, r1, r11 @@ -276,6 +279,9 @@ traced_system_call: translate_rc_and_ret2: movi r1, 0 bge r2, zero, 4f + ldw r1, PT_ORIG_R2(sp) + addi r1, r1, 1 + beq r1, zero, 4f sub r2, zero, r2 movi r1, 1 4: @@ -287,6 +293,11 @@ end_translate_rc_and_ret2: RESTORE_SWITCH_STACK br ret_from_exception + /* If the syscall number was invalid return ENOSYS */ +traced_invsyscall: + movi r2, -ENOSYS + br translate_rc_and_ret2 + Luser_return: GET_THREAD_INFO r11 /* get thread_info pointer */ ldw r10, TI_FLAGS(r11) /* get thread_info->flags */ @@ -336,9 +347,6 @@ external_interrupt: /* skip if no interrupt is pending */ beq r12, r0, ret_from_interrupt - movi r24, -1 - stw r24, PT_ORIG_R2(sp) - /* * Process an external hardware interrupt. */ |