diff options
Diffstat (limited to 'kernel/exceptions/undefined.S')
| -rw-r--r-- | kernel/exceptions/undefined.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/exceptions/undefined.S b/kernel/exceptions/undefined.S new file mode 100644 index 0000000..856e30f --- /dev/null +++ b/kernel/exceptions/undefined.S @@ -0,0 +1,21 @@ +.section ".text.exceptions" +.globl undefined +undefined: + cpsid aif + stmfd sp!, {r0-r12,lr} + ldr r4, [lr, #-4] + mov r0, #62 + mov r1, #0 + mov r2, r4 + bl draw_hex32 + // Output lr + ldr r0, [sp, #0x34] + sub r2, r0, #4 + mov r0, #62 + mov r1, #1 + bl draw_hex32 + // Skip instruction for now + // In future, + // ldmfd sp!, {r0-r12,lr} // Note the lack of ^ since subs will handle it + // subs pc, lr, #4 + ldmfd sp!, {r0-r12,pc}^ |