| Marcin Nowakowski | e3031b3 | 2016-09-30 11:33:45 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 Imagination Technologies |
| 3 | * Author: Marcin Nowakowski <marcin.nowakowski@imgtec.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | */ |
| 10 | |
| 11 | #ifndef __PROBES_COMMON_H |
| 12 | #define __PROBES_COMMON_H |
| 13 | |
| 14 | #include <asm/inst.h> |
| 15 | |
| 16 | static inline int __insn_has_delay_slot(const union mips_instruction insn) |
| 17 | { |
| 18 | switch (insn.i_format.opcode) { |
| 19 | /* |
| 20 | * jr and jalr are in r_format format. |
| 21 | */ |
| 22 | case spec_op: |
| 23 | switch (insn.r_format.func) { |
| 24 | case jalr_op: |
| 25 | case jr_op: |
| 26 | return 1; |
| 27 | } |
| 28 | break; |
| 29 | |
| 30 | /* |
| 31 | * This group contains: |
| 32 | * bltz_op, bgez_op, bltzl_op, bgezl_op, |
| 33 | * bltzal_op, bgezal_op, bltzall_op, bgezall_op. |
| 34 | */ |
| 35 | case bcond_op: |
| 36 | switch (insn.i_format.rt) { |
| 37 | case bltz_op: |
| 38 | case bltzl_op: |
| 39 | case bgez_op: |
| 40 | case bgezl_op: |
| 41 | case bltzal_op: |
| 42 | case bltzall_op: |
| 43 | case bgezal_op: |
| 44 | case bgezall_op: |
| 45 | case bposge32_op: |
| 46 | return 1; |
| 47 | } |
| 48 | break; |
| 49 | |
| 50 | /* |
| 51 | * These are unconditional and in j_format. |
| 52 | */ |
| 53 | case jal_op: |
| 54 | case j_op: |
| 55 | case beq_op: |
| 56 | case beql_op: |
| 57 | case bne_op: |
| 58 | case bnel_op: |
| 59 | case blez_op: /* not really i_format */ |
| 60 | case blezl_op: |
| 61 | case bgtz_op: |
| 62 | case bgtzl_op: |
| 63 | return 1; |
| 64 | |
| 65 | /* |
| 66 | * And now the FPA/cp1 branch instructions. |
| 67 | */ |
| 68 | case cop1_op: |
| 69 | #ifdef CONFIG_CPU_CAVIUM_OCTEON |
| 70 | case lwc2_op: /* This is bbit0 on Octeon */ |
| 71 | case ldc2_op: /* This is bbit032 on Octeon */ |
| 72 | case swc2_op: /* This is bbit1 on Octeon */ |
| 73 | case sdc2_op: /* This is bbit132 on Octeon */ |
| 74 | #endif |
| 75 | return 1; |
| 76 | } |
| 77 | |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | #endif /* __PROBES_COMMON_H */ |