1 /* |
1 /* |
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
3 * Copyright (c) 2016 SAP SE. All rights reserved. |
3 * Copyright (c) 2016, 2019 SAP SE. All rights reserved. |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 * |
5 * |
6 * This code is free software; you can redistribute it and/or modify it |
6 * This code is free software; you can redistribute it and/or modify it |
7 * under the terms of the GNU General Public License version 2 only, as |
7 * under the terms of the GNU General Public License version 2 only, as |
8 * published by the Free Software Foundation. |
8 * published by the Free Software Foundation. |
25 |
25 |
26 #ifndef CPU_S390_DISASSEMBLER_S390_HPP |
26 #ifndef CPU_S390_DISASSEMBLER_S390_HPP |
27 #define CPU_S390_DISASSEMBLER_S390_HPP |
27 #define CPU_S390_DISASSEMBLER_S390_HPP |
28 |
28 |
29 static int pd_instruction_alignment() { |
29 static int pd_instruction_alignment() { |
30 return 1; |
30 return 2; |
31 } |
31 } |
32 |
32 |
33 static const char* pd_cpu_opts() { |
33 static const char* pd_cpu_opts() { |
34 return "zarch"; |
34 return "s390"; |
35 } |
35 } |
36 |
36 |
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37 static bool valid_opcodes[256]; |
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38 static bool is_valid_opcode_at(address here); |
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39 |
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40 // Find preceding instruction. |
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41 // |
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42 // Starting at the passed location, the n-th preceding (towards lower addresses) |
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43 // location is searched, the contents of which - if interpreted as |
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44 // instructions - has the passed location as n-th successor. |
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45 // - If multiple such locations exist between (here-n*instr_maxlen()) and here, |
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46 // the most distant location is selected. |
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47 // - If no such location exists, NULL is returned. The caller should then |
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48 // terminate its search and react properly. |
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49 static address find_prev_instr(address here, int n_instr); |
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50 static int count_instr(address begin, address end); |
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51 |
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52 // special-case instruction decoding. |
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53 // There may be cases where the binutils disassembler doesn't do |
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54 // the perfect job. In those cases, decode_instruction0 may kick in |
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55 // and do it right. |
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56 // If nothing had to be done, just return "here", otherwise return "here + instr_len(here)" |
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57 static address decode_instruction0(address here, outputStream* st, address virtual_begin = NULL); |
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58 |
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59 // platform-specific instruction annotations (like value of loaded constants) |
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60 static void annotate(address pc, outputStream* st); |
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61 |
37 #endif // CPU_S390_DISASSEMBLER_S390_HPP |
62 #endif // CPU_S390_DISASSEMBLER_S390_HPP |