1 //===-- ABIMacOSX_arm.cpp --------------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "ABIMacOSX_arm.h"
11
12 #include "lldb/Core/ConstString.h"
13 #include "lldb/Core/Error.h"
14 #include "lldb/Core/Module.h"
15 #include "lldb/Core/PluginManager.h"
16 #include "lldb/Core/RegisterValue.h"
17 #include "lldb/Core/Scalar.h"
18 #include "lldb/Core/Value.h"
19 #include "lldb/Core/ValueObjectConstResult.h"
20 #include "lldb/Symbol/ClangASTContext.h"
21 #include "lldb/Symbol/UnwindPlan.h"
22 #include "lldb/Target/Process.h"
23 #include "lldb/Target/RegisterContext.h"
24 #include "lldb/Target/Target.h"
25 #include "lldb/Target/Thread.h"
26
27 #include "llvm/ADT/Triple.h"
28
29 #include "Utility/ARM_DWARF_Registers.h"
30 #include "Utility/ARM_GCC_Registers.h"
31 #include "Plugins/Process/Utility/ARMDefines.h"
32
33 #include <vector>
34
35 using namespace lldb;
36 using namespace lldb_private;
37
38 static RegisterInfo g_register_infos[] =
39 {
40 // NAME ALT SZ OFF ENCODING FORMAT COMPILER DWARF GENERIC GDB LLDB NATIVE VALUE REGS INVALIDATE REGS
41 // ========== ======= == === ============= ============ ======================= =================== =========================== ======================= ====================== ========== ===============
42 { "r0", "arg1", 4, 0, eEncodingUint , eFormatHex, { gcc_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1, gdb_arm_r0, LLDB_INVALID_REGNUM }, NULL, NULL},
43 { "r1", "arg2", 4, 0, eEncodingUint , eFormatHex, { gcc_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2, gdb_arm_r1, LLDB_INVALID_REGNUM }, NULL, NULL},
44 { "r2", "arg3", 4, 0, eEncodingUint , eFormatHex, { gcc_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3, gdb_arm_r2, LLDB_INVALID_REGNUM }, NULL, NULL},
45 { "r3", "arg4", 4, 0, eEncodingUint , eFormatHex, { gcc_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4, gdb_arm_r3, LLDB_INVALID_REGNUM }, NULL, NULL},
46 { "r4", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r4, dwarf_r4, LLDB_INVALID_REGNUM, gdb_arm_r4, LLDB_INVALID_REGNUM }, NULL, NULL},
47 { "r5", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r5, dwarf_r5, LLDB_INVALID_REGNUM, gdb_arm_r5, LLDB_INVALID_REGNUM }, NULL, NULL},
48 { "r6", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r6, dwarf_r6, LLDB_INVALID_REGNUM, gdb_arm_r6, LLDB_INVALID_REGNUM }, NULL, NULL},
49 { "r7", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, gdb_arm_r7, LLDB_INVALID_REGNUM }, NULL, NULL},
50 { "r8", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r8, dwarf_r8, LLDB_INVALID_REGNUM, gdb_arm_r8, LLDB_INVALID_REGNUM }, NULL, NULL},
51 { "r9", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r9, dwarf_r9, LLDB_INVALID_REGNUM, gdb_arm_r9, LLDB_INVALID_REGNUM }, NULL, NULL},
52 { "r10", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r10, dwarf_r10, LLDB_INVALID_REGNUM, gdb_arm_r10, LLDB_INVALID_REGNUM }, NULL, NULL},
53 { "r11", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r11, dwarf_r11, LLDB_INVALID_REGNUM, gdb_arm_r11, LLDB_INVALID_REGNUM }, NULL, NULL},
54 { "r12", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r12, dwarf_r12, LLDB_INVALID_REGNUM, gdb_arm_r12, LLDB_INVALID_REGNUM }, NULL, NULL},
55 { "sp", "r13", 4, 0, eEncodingUint , eFormatHex, { gcc_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, gdb_arm_sp, LLDB_INVALID_REGNUM }, NULL, NULL},
56 { "lr", "r14", 4, 0, eEncodingUint , eFormatHex, { gcc_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, gdb_arm_lr, LLDB_INVALID_REGNUM }, NULL, NULL},
57 { "pc", "r15", 4, 0, eEncodingUint , eFormatHex, { gcc_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, gdb_arm_pc, LLDB_INVALID_REGNUM }, NULL, NULL},
58 { "cpsr", "psr", 4, 0, eEncodingUint , eFormatHex, { gcc_cpsr, dwarf_cpsr, LLDB_REGNUM_GENERIC_FLAGS, gdb_arm_cpsr, LLDB_INVALID_REGNUM }, NULL, NULL},
59 { "s0", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, gdb_arm_s0, LLDB_INVALID_REGNUM }, NULL, NULL},
60 { "s1", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, gdb_arm_s1, LLDB_INVALID_REGNUM }, NULL, NULL},
61 { "s2", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, gdb_arm_s2, LLDB_INVALID_REGNUM }, NULL, NULL},
62 { "s3", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, gdb_arm_s3, LLDB_INVALID_REGNUM }, NULL, NULL},
63 { "s4", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, gdb_arm_s4, LLDB_INVALID_REGNUM }, NULL, NULL},
64 { "s5", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, gdb_arm_s5, LLDB_INVALID_REGNUM }, NULL, NULL},
65 { "s6", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, gdb_arm_s6, LLDB_INVALID_REGNUM }, NULL, NULL},
66 { "s7", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, gdb_arm_s7, LLDB_INVALID_REGNUM }, NULL, NULL},
67 { "s8", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, gdb_arm_s8, LLDB_INVALID_REGNUM }, NULL, NULL},
68 { "s9", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, gdb_arm_s9, LLDB_INVALID_REGNUM }, NULL, NULL},
69 { "s10", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, gdb_arm_s10, LLDB_INVALID_REGNUM }, NULL, NULL},
70 { "s11", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, gdb_arm_s11, LLDB_INVALID_REGNUM }, NULL, NULL},
71 { "s12", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, gdb_arm_s12, LLDB_INVALID_REGNUM }, NULL, NULL},
72 { "s13", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, gdb_arm_s13, LLDB_INVALID_REGNUM }, NULL, NULL},
73 { "s14", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, gdb_arm_s14, LLDB_INVALID_REGNUM }, NULL, NULL},
74 { "s15", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, gdb_arm_s15, LLDB_INVALID_REGNUM }, NULL, NULL},
75 { "s16", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, gdb_arm_s16, LLDB_INVALID_REGNUM }, NULL, NULL},
76 { "s17", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, gdb_arm_s17, LLDB_INVALID_REGNUM }, NULL, NULL},
77 { "s18", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, gdb_arm_s18, LLDB_INVALID_REGNUM }, NULL, NULL},
78 { "s19", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, gdb_arm_s19, LLDB_INVALID_REGNUM }, NULL, NULL},
79 { "s20", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, gdb_arm_s20, LLDB_INVALID_REGNUM }, NULL, NULL},
80 { "s21", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, gdb_arm_s21, LLDB_INVALID_REGNUM }, NULL, NULL},
81 { "s22", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, gdb_arm_s22, LLDB_INVALID_REGNUM }, NULL, NULL},
82 { "s23", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, gdb_arm_s23, LLDB_INVALID_REGNUM }, NULL, NULL},
83 { "s24", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, gdb_arm_s24, LLDB_INVALID_REGNUM }, NULL, NULL},
84 { "s25", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, gdb_arm_s25, LLDB_INVALID_REGNUM }, NULL, NULL},
85 { "s26", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, gdb_arm_s26, LLDB_INVALID_REGNUM }, NULL, NULL},
86 { "s27", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, gdb_arm_s27, LLDB_INVALID_REGNUM }, NULL, NULL},
87 { "s28", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, gdb_arm_s28, LLDB_INVALID_REGNUM }, NULL, NULL},
88 { "s29", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, gdb_arm_s29, LLDB_INVALID_REGNUM }, NULL, NULL},
89 { "s30", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, gdb_arm_s30, LLDB_INVALID_REGNUM }, NULL, NULL},
90 { "s31", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, gdb_arm_s31, LLDB_INVALID_REGNUM }, NULL, NULL},
91 { "fpscr", NULL, 4, 0, eEncodingUint , eFormatHex , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, gdb_arm_fpscr, LLDB_INVALID_REGNUM }, NULL, NULL},
92 { "d0", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, gdb_arm_d0, LLDB_INVALID_REGNUM }, NULL, NULL},
93 { "d1", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, gdb_arm_d1, LLDB_INVALID_REGNUM }, NULL, NULL},
94 { "d2", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, gdb_arm_d2, LLDB_INVALID_REGNUM }, NULL, NULL},
95 { "d3", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, gdb_arm_d3, LLDB_INVALID_REGNUM }, NULL, NULL},
96 { "d4", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, gdb_arm_d4, LLDB_INVALID_REGNUM }, NULL, NULL},
97 { "d5", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, gdb_arm_d5, LLDB_INVALID_REGNUM }, NULL, NULL},
98 { "d6", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, gdb_arm_d6, LLDB_INVALID_REGNUM }, NULL, NULL},
99 { "d7", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, gdb_arm_d7, LLDB_INVALID_REGNUM }, NULL, NULL},
100 { "d8", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, gdb_arm_d8, LLDB_INVALID_REGNUM }, NULL, NULL},
101 { "d9", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, gdb_arm_d9, LLDB_INVALID_REGNUM }, NULL, NULL},
102 { "d10", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, gdb_arm_d10, LLDB_INVALID_REGNUM }, NULL, NULL},
103 { "d11", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, gdb_arm_d11, LLDB_INVALID_REGNUM }, NULL, NULL},
104 { "d12", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, gdb_arm_d12, LLDB_INVALID_REGNUM }, NULL, NULL},
105 { "d13", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, gdb_arm_d13, LLDB_INVALID_REGNUM }, NULL, NULL},
106 { "d14", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, gdb_arm_d14, LLDB_INVALID_REGNUM }, NULL, NULL},
107 { "d15", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, gdb_arm_d15, LLDB_INVALID_REGNUM }, NULL, NULL},
108 { "d16", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, gdb_arm_d16, LLDB_INVALID_REGNUM }, NULL, NULL},
109 { "d17", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, gdb_arm_d17, LLDB_INVALID_REGNUM }, NULL, NULL},
110 { "d18", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, gdb_arm_d18, LLDB_INVALID_REGNUM }, NULL, NULL},
111 { "d19", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, gdb_arm_d19, LLDB_INVALID_REGNUM }, NULL, NULL},
112 { "d20", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, gdb_arm_d20, LLDB_INVALID_REGNUM }, NULL, NULL},
113 { "d21", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, gdb_arm_d21, LLDB_INVALID_REGNUM }, NULL, NULL},
114 { "d22", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, gdb_arm_d22, LLDB_INVALID_REGNUM }, NULL, NULL},
115 { "d23", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, gdb_arm_d23, LLDB_INVALID_REGNUM }, NULL, NULL},
116 { "d24", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, gdb_arm_d24, LLDB_INVALID_REGNUM }, NULL, NULL},
117 { "d25", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, gdb_arm_d25, LLDB_INVALID_REGNUM }, NULL, NULL},
118 { "d26", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, gdb_arm_d26, LLDB_INVALID_REGNUM }, NULL, NULL},
119 { "d27", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, gdb_arm_d27, LLDB_INVALID_REGNUM }, NULL, NULL},
120 { "d28", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, gdb_arm_d28, LLDB_INVALID_REGNUM }, NULL, NULL},
121 { "d29", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, gdb_arm_d29, LLDB_INVALID_REGNUM }, NULL, NULL},
122 { "d30", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, gdb_arm_d30, LLDB_INVALID_REGNUM }, NULL, NULL},
123 { "d31", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, gdb_arm_d31, LLDB_INVALID_REGNUM }, NULL, NULL},
124 { "r8_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r8_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
125 { "r9_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r9_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
126 { "r10_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r10_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
127 { "r11_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r11_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
128 { "r12_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r12_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
129 { "r13_usr", "sp_usr", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
130 { "r14_usr", "lr_usr", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
131 { "r8_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r8_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
132 { "r9_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r9_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
133 { "r10_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r10_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
134 { "r11_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r11_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
135 { "r12_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r12_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
136 { "r13_fiq", "sp_fiq", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
137 { "r14_fiq", "lr_fiq", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
138 { "r13_irq", "sp_irq", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_irq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
139 { "r14_irq", "lr_irq", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_irq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
140 { "r13_abt", "sp_abt", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_abt, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
141 { "r14_abt", "lr_abt", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_abt, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
142 { "r13_und", "sp_und", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_und, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
143 { "r14_und", "lr_und", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_und, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
144 { "r13_svc", "sp_svc", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r13_svc, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
145 { "r14_svc", "lr_svc", 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r14_svc, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL}
146 };
147 static const uint32_t k_num_register_infos = sizeof(g_register_infos)/sizeof(RegisterInfo);
148 static bool g_register_info_names_constified = false;
149
150 const lldb_private::RegisterInfo *
GetRegisterInfoArray(uint32_t & count)151 ABIMacOSX_arm::GetRegisterInfoArray (uint32_t &count)
152 {
153 // Make the C-string names and alt_names for the register infos into const
154 // C-string values by having the ConstString unique the names in the global
155 // constant C-string pool.
156 if (!g_register_info_names_constified)
157 {
158 g_register_info_names_constified = true;
159 for (uint32_t i=0; i<k_num_register_infos; ++i)
160 {
161 if (g_register_infos[i].name)
162 g_register_infos[i].name = ConstString(g_register_infos[i].name).GetCString();
163 if (g_register_infos[i].alt_name)
164 g_register_infos[i].alt_name = ConstString(g_register_infos[i].alt_name).GetCString();
165 }
166 }
167 count = k_num_register_infos;
168 return g_register_infos;
169 }
170
171
172 size_t
GetRedZoneSize() const173 ABIMacOSX_arm::GetRedZoneSize () const
174 {
175 return 0;
176 }
177
178 //------------------------------------------------------------------
179 // Static Functions
180 //------------------------------------------------------------------
181 ABISP
CreateInstance(const ArchSpec & arch)182 ABIMacOSX_arm::CreateInstance (const ArchSpec &arch)
183 {
184 static ABISP g_abi_sp;
185 const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
186 if ((arch_type == llvm::Triple::arm) ||
187 (arch_type == llvm::Triple::thumb))
188 {
189 if (!g_abi_sp)
190 g_abi_sp.reset (new ABIMacOSX_arm);
191 return g_abi_sp;
192 }
193 return ABISP();
194 }
195
196 bool
PrepareTrivialCall(Thread & thread,addr_t sp,addr_t function_addr,addr_t return_addr,llvm::ArrayRef<addr_t> args) const197 ABIMacOSX_arm::PrepareTrivialCall (Thread &thread,
198 addr_t sp,
199 addr_t function_addr,
200 addr_t return_addr,
201 llvm::ArrayRef<addr_t> args) const
202 {
203 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
204 if (!reg_ctx)
205 return false;
206
207 const uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
208 const uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
209 const uint32_t ra_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA);
210
211 RegisterValue reg_value;
212
213 const char *reg_names[] = { "r0", "r1", "r2", "r3" };
214
215 llvm::ArrayRef<addr_t>::iterator ai = args.begin(), ae = args.end();
216
217 for (size_t i = 0; i < (sizeof(reg_names) / sizeof(reg_names[0])); ++i)
218 {
219 if (ai == ae)
220 break;
221
222 reg_value.SetUInt32(*ai);
223 if (!reg_ctx->WriteRegister(reg_ctx->GetRegisterInfoByName(reg_names[i]), reg_value))
224 return false;
225
226 ++ai;
227 }
228
229 if (ai != ae)
230 {
231 // Spill onto the stack
232 size_t num_stack_regs = ae - ai;
233
234 sp -= (num_stack_regs * 4);
235 // Keep the stack 8 byte aligned, not that we need to
236 sp &= ~(8ull-1ull);
237
238 // just using arg1 to get the right size
239 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1);
240
241 addr_t arg_pos = sp;
242
243 for (; ai != ae; ++ai)
244 {
245 reg_value.SetUInt32(*ai);
246 if (reg_ctx->WriteRegisterValueToMemory(reg_info, arg_pos, reg_info->byte_size, reg_value).Fail())
247 return false;
248 arg_pos += reg_info->byte_size;
249 }
250 }
251
252 TargetSP target_sp (thread.CalculateTarget());
253 Address so_addr;
254
255 // Figure out if our return address is ARM or Thumb by using the
256 // Address::GetCallableLoadAddress(Target*) which will figure out the ARM
257 // thumb-ness and set the correct address bits for us.
258 so_addr.SetLoadAddress (return_addr, target_sp.get());
259 return_addr = so_addr.GetCallableLoadAddress (target_sp.get());
260
261 // Set "lr" to the return address
262 if (!reg_ctx->WriteRegisterFromUnsigned (ra_reg_num, return_addr))
263 return false;
264
265 // Set "sp" to the requested value
266 if (!reg_ctx->WriteRegisterFromUnsigned (sp_reg_num, sp))
267 return false;
268
269 // If bit zero or 1 is set, this must be a thumb function, no need to figure
270 // this out from the symbols.
271 so_addr.SetLoadAddress (function_addr, target_sp.get());
272 function_addr = so_addr.GetCallableLoadAddress (target_sp.get());
273
274 const RegisterInfo *cpsr_reg_info = reg_ctx->GetRegisterInfoByName("cpsr");
275 const uint32_t curr_cpsr = reg_ctx->ReadRegisterAsUnsigned(cpsr_reg_info, 0);
276
277 // Make a new CPSR and mask out any Thumb IT (if/then) bits
278 uint32_t new_cpsr = curr_cpsr & ~MASK_CPSR_IT_MASK;
279 // If bit zero or 1 is set, this must be thumb...
280 if (function_addr & 1ull)
281 new_cpsr |= MASK_CPSR_T; // Set T bit in CPSR
282 else
283 new_cpsr &= ~MASK_CPSR_T; // Clear T bit in CPSR
284
285 if (new_cpsr != curr_cpsr)
286 {
287 if (!reg_ctx->WriteRegisterFromUnsigned (cpsr_reg_info, new_cpsr))
288 return false;
289 }
290
291 function_addr &= ~1ull; // clear bit zero since the CPSR will take care of the mode for us
292
293 // Set "pc" to the address requested
294 if (!reg_ctx->WriteRegisterFromUnsigned (pc_reg_num, function_addr))
295 return false;
296
297 return true;
298 }
299
300 bool
GetArgumentValues(Thread & thread,ValueList & values) const301 ABIMacOSX_arm::GetArgumentValues (Thread &thread,
302 ValueList &values) const
303 {
304 uint32_t num_values = values.GetSize();
305
306
307 ExecutionContext exe_ctx (thread.shared_from_this());
308 // For now, assume that the types in the AST values come from the Target's
309 // scratch AST.
310
311 // Extract the register context so we can read arguments from registers
312
313 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
314
315 if (!reg_ctx)
316 return false;
317
318 addr_t sp = 0;
319
320 for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx)
321 {
322 // We currently only support extracting values with Clang QualTypes.
323 // Do we care about others?
324 Value *value = values.GetValueAtIndex(value_idx);
325
326 if (!value)
327 return false;
328
329 ClangASTType clang_type = value->GetClangType();
330 if (clang_type)
331 {
332 bool is_signed = false;
333 size_t bit_width = 0;
334 if (clang_type.IsIntegerType (is_signed))
335 {
336 bit_width = clang_type.GetBitSize();
337 }
338 else if (clang_type.IsPointerOrReferenceType ())
339 {
340 bit_width = clang_type.GetBitSize();
341 }
342 else
343 {
344 // We only handle integer, pointer and reference types currently...
345 return false;
346 }
347
348 if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8))
349 {
350 if (value_idx < 4)
351 {
352 // Arguments 1-4 are in r0-r3...
353 const RegisterInfo *arg_reg_info = NULL;
354 // Search by generic ID first, then fall back to by name
355 uint32_t arg_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + value_idx);
356 if (arg_reg_num != LLDB_INVALID_REGNUM)
357 {
358 arg_reg_info = reg_ctx->GetRegisterInfoAtIndex(arg_reg_num);
359 }
360 else
361 {
362 switch (value_idx)
363 {
364 case 0: arg_reg_info = reg_ctx->GetRegisterInfoByName("r0"); break;
365 case 1: arg_reg_info = reg_ctx->GetRegisterInfoByName("r1"); break;
366 case 2: arg_reg_info = reg_ctx->GetRegisterInfoByName("r2"); break;
367 case 3: arg_reg_info = reg_ctx->GetRegisterInfoByName("r3"); break;
368 }
369 }
370
371 if (arg_reg_info)
372 {
373 RegisterValue reg_value;
374
375 if (reg_ctx->ReadRegister(arg_reg_info, reg_value))
376 {
377 if (is_signed)
378 reg_value.SignExtend(bit_width);
379 if (!reg_value.GetScalarValue(value->GetScalar()))
380 return false;
381 continue;
382 }
383 }
384 return false;
385 }
386 else
387 {
388 if (sp == 0)
389 {
390 // Read the stack pointer if it already hasn't been read
391 sp = reg_ctx->GetSP(0);
392 if (sp == 0)
393 return false;
394 }
395
396 // Arguments 5 on up are on the stack
397 const uint32_t arg_byte_size = (bit_width + (8-1)) / 8;
398 Error error;
399 if (!exe_ctx.GetProcessRef().ReadScalarIntegerFromMemory(sp, arg_byte_size, is_signed, value->GetScalar(), error))
400 return false;
401
402 sp += arg_byte_size;
403 }
404 }
405 }
406 }
407 return true;
408 }
409
410 ValueObjectSP
GetReturnValueObjectImpl(Thread & thread,lldb_private::ClangASTType & clang_type) const411 ABIMacOSX_arm::GetReturnValueObjectImpl (Thread &thread,
412 lldb_private::ClangASTType &clang_type) const
413 {
414 Value value;
415 ValueObjectSP return_valobj_sp;
416
417 if (!clang_type)
418 return return_valobj_sp;
419
420 clang::ASTContext *ast_context = clang_type.GetASTContext();
421 if (!ast_context)
422 return return_valobj_sp;
423
424 //value.SetContext (Value::eContextTypeClangType, clang_type.GetOpaqueQualType());
425 value.SetClangType (clang_type);
426
427 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
428 if (!reg_ctx)
429 return return_valobj_sp;
430
431 bool is_signed;
432
433 // Get the pointer to the first stack argument so we have a place to start
434 // when reading data
435
436 const RegisterInfo *r0_reg_info = reg_ctx->GetRegisterInfoByName("r0", 0);
437 if (clang_type.IsIntegerType (is_signed))
438 {
439 size_t bit_width = clang_type.GetBitSize();
440
441 switch (bit_width)
442 {
443 default:
444 return return_valobj_sp;
445 case 64:
446 {
447 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfoByName("r1", 0);
448 uint64_t raw_value;
449 raw_value = reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
450 raw_value |= ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) & UINT32_MAX)) << 32;
451 if (is_signed)
452 value.GetScalar() = (int64_t)raw_value;
453 else
454 value.GetScalar() = (uint64_t)raw_value;
455 }
456 break;
457 case 32:
458 if (is_signed)
459 value.GetScalar() = (int32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
460 else
461 value.GetScalar() = (uint32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
462 break;
463 case 16:
464 if (is_signed)
465 value.GetScalar() = (int16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
466 else
467 value.GetScalar() = (uint16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
468 break;
469 case 8:
470 if (is_signed)
471 value.GetScalar() = (int8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
472 else
473 value.GetScalar() = (uint8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
474 break;
475 }
476 }
477 else if (clang_type.IsPointerType ())
478 {
479 uint32_t ptr = thread.GetRegisterContext()->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
480 value.GetScalar() = ptr;
481 }
482 else
483 {
484 // not handled yet
485 return return_valobj_sp;
486 }
487
488 // If we get here, we have a valid Value, so make our ValueObject out of it:
489
490 return_valobj_sp = ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(),
491 value,
492 ConstString(""));
493 return return_valobj_sp;
494 }
495
496 Error
SetReturnValueObject(lldb::StackFrameSP & frame_sp,lldb::ValueObjectSP & new_value_sp)497 ABIMacOSX_arm::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp)
498 {
499 Error error;
500 if (!new_value_sp)
501 {
502 error.SetErrorString("Empty value object for return value.");
503 return error;
504 }
505
506 ClangASTType clang_type = new_value_sp->GetClangType();
507 if (!clang_type)
508 {
509 error.SetErrorString ("Null clang type for return value.");
510 return error;
511 }
512
513 Thread *thread = frame_sp->GetThread().get();
514
515 bool is_signed;
516 uint32_t count;
517 bool is_complex;
518
519 RegisterContext *reg_ctx = thread->GetRegisterContext().get();
520
521 bool set_it_simple = false;
522 if (clang_type.IsIntegerType (is_signed) || clang_type.IsPointerType())
523 {
524 DataExtractor data;
525 size_t num_bytes = new_value_sp->GetData(data);
526 lldb::offset_t offset = 0;
527 if (num_bytes <= 8)
528 {
529 const RegisterInfo *r0_info = reg_ctx->GetRegisterInfoByName("r0", 0);
530 if (num_bytes <= 4)
531 {
532 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
533
534 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
535 set_it_simple = true;
536 }
537 else
538 {
539 uint32_t raw_value = data.GetMaxU32(&offset, 4);
540
541 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
542 {
543 const RegisterInfo *r1_info = reg_ctx->GetRegisterInfoByName("r1", 0);
544 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset);
545
546 if (reg_ctx->WriteRegisterFromUnsigned (r1_info, raw_value))
547 set_it_simple = true;
548 }
549 }
550 }
551 else
552 {
553 error.SetErrorString("We don't support returning longer than 64 bit integer values at present.");
554 }
555 }
556 else if (clang_type.IsFloatingPointType (count, is_complex))
557 {
558 if (is_complex)
559 error.SetErrorString ("We don't support returning complex values at present");
560 else
561 error.SetErrorString ("We don't support returning float values at present");
562 }
563
564 if (!set_it_simple)
565 error.SetErrorString ("We only support setting simple integer return types at present.");
566
567 return error;
568 }
569
570 bool
CreateFunctionEntryUnwindPlan(UnwindPlan & unwind_plan)571 ABIMacOSX_arm::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan)
572 {
573 unwind_plan.Clear();
574 unwind_plan.SetRegisterKind (eRegisterKindDWARF);
575
576 uint32_t lr_reg_num = dwarf_lr;
577 uint32_t sp_reg_num = dwarf_sp;
578 uint32_t pc_reg_num = dwarf_pc;
579
580 UnwindPlan::RowSP row(new UnwindPlan::Row);
581
582 // Our Call Frame Address is the stack pointer value
583 row->SetCFARegister (sp_reg_num);
584
585 // The previous PC is in the LR
586 row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
587 unwind_plan.AppendRow (row);
588
589 // All other registers are the same.
590
591 unwind_plan.SetSourceName ("arm at-func-entry default");
592 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
593
594 return true;
595 }
596
597 bool
CreateDefaultUnwindPlan(UnwindPlan & unwind_plan)598 ABIMacOSX_arm::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan)
599 {
600 unwind_plan.Clear ();
601 unwind_plan.SetRegisterKind (eRegisterKindDWARF);
602
603 uint32_t fp_reg_num = dwarf_r7; // apple uses r7 for all frames. Normal arm uses r11
604 uint32_t pc_reg_num = dwarf_pc;
605
606 UnwindPlan::RowSP row(new UnwindPlan::Row);
607 const int32_t ptr_size = 4;
608
609 row->SetCFARegister (fp_reg_num);
610 row->SetCFAOffset (2 * ptr_size);
611 row->SetOffset (0);
612
613 row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
614 row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
615
616 unwind_plan.AppendRow (row);
617 unwind_plan.SetSourceName ("arm-apple-ios default unwind plan");
618 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
619 unwind_plan.SetUnwindPlanValidAtAllInstructions (eLazyBoolNo);
620
621 return true;
622 }
623
624 // cf. "ARMv6 Function Calling Conventions"
625 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv6FunctionCallingConventions.html
626 // and "ARMv7 Function Calling Conventions"
627 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv7FunctionCallingConventions.html
628
629 // ARMv7 on iOS general purpose reg rules:
630 // r0-r3 not preserved (used for argument passing)
631 // r4-r6 preserved
632 // r7 preserved (frame pointer)
633 // r8 preserved
634 // r9 not preserved (usable as volatile scratch register with iOS 3.x and later)
635 // r10-r11 preserved
636 // r12 not presrved
637 // r13 preserved (stack pointer)
638 // r14 not preserved (link register)
639 // r15 preserved (pc)
640 // cpsr not preserved (different rules for different bits)
641
642 // ARMv7 on iOS floating point rules:
643 // d0-d7 not preserved (aka s0-s15, q0-q3)
644 // d8-d15 preserved (aka s16-s31, q4-q7)
645 // d16-d31 not preserved (aka q8-q15)
646
647 bool
RegisterIsVolatile(const RegisterInfo * reg_info)648 ABIMacOSX_arm::RegisterIsVolatile (const RegisterInfo *reg_info)
649 {
650 if (reg_info)
651 {
652 // Volatile registers are: r0, r1, r2, r3, r9, r12, r13 (aka sp)
653 const char *name = reg_info->name;
654 if (name[0] == 'r')
655 {
656 switch (name[1])
657 {
658 case '0': return name[2] == '\0'; // r0
659 case '1':
660 switch (name[2])
661 {
662 case '\0':
663 return true; // r1
664 case '2':
665 case '3':
666 return name[3] == '\0'; // r12, r13 (sp)
667 default:
668 break;
669 }
670 break;
671
672 case '2': return name[2] == '\0'; // r2
673 case '3': return name[2] == '\0'; // r3
674 case '9': return name[2] == '\0'; // r9 (apple-ios only...)
675
676 break;
677 }
678 }
679 else if (name[0] == 'd')
680 {
681 switch (name[1])
682 {
683 case '0':
684 return name[2] == '\0'; // d0 is volatile
685
686 case '1':
687 switch (name[2])
688 {
689 case '\0':
690 return true; // d1 is volatile
691 case '6':
692 case '7':
693 case '8':
694 case '9':
695 return name[3] == '\0'; // d16 - d19 are volatile
696 default:
697 break;
698 }
699 break;
700
701 case '2':
702 switch (name[2])
703 {
704 case '\0':
705 return true; // d2 is volatile
706 case '0':
707 case '1':
708 case '2':
709 case '3':
710 case '4':
711 case '5':
712 case '6':
713 case '7':
714 case '8':
715 case '9':
716 return name[3] == '\0'; // d20 - d29 are volatile
717 default:
718 break;
719 }
720 break;
721
722 case '3':
723 switch (name[2])
724 {
725 case '\0':
726 return true; // d3 is volatile
727 case '0':
728 case '1':
729 return name[3] == '\0'; // d30 - d31 are volatile
730 default:
731 break;
732 }
733 case '4':
734 case '5':
735 case '6':
736 case '7':
737 return name[2] == '\0'; // d4 - d7 are volatile
738
739 default:
740 break;
741 }
742 }
743 else if (name[0] == 's')
744 {
745 switch (name[1])
746 {
747 case '0':
748 return name[2] == '\0'; // s0 is volatile
749
750 case '1':
751 switch (name[2])
752 {
753 case '\0':
754 return true; // s1 is volatile
755 case '0':
756 case '1':
757 case '2':
758 case '3':
759 case '4':
760 case '5':
761 return name[3] == '\0'; // s10 - s15 are volatile
762 default:
763 break;
764 }
765 break;
766
767 case '2':
768 switch (name[2])
769 {
770 case '\0':
771 return true; // s2 is volatile
772 default:
773 break;
774 }
775 break;
776
777 case '3':
778 switch (name[2])
779 {
780 case '\0':
781 return true; // s3 is volatile
782 default:
783 break;
784 }
785 case '4':
786 case '5':
787 case '6':
788 case '7':
789 case '8':
790 case '9':
791 return name[2] == '\0'; // s4 - s9 are volatile
792
793 default:
794 break;
795 }
796 }
797 else if (name[0] == 's' && name[1] == 'p' && name[2] == '\0')
798 return true;
799 }
800 return false;
801 }
802
803 void
Initialize()804 ABIMacOSX_arm::Initialize()
805 {
806 PluginManager::RegisterPlugin (GetPluginNameStatic(),
807 "Mac OS X ABI for arm targets",
808 CreateInstance);
809 }
810
811 void
Terminate()812 ABIMacOSX_arm::Terminate()
813 {
814 PluginManager::UnregisterPlugin (CreateInstance);
815 }
816
817 lldb_private::ConstString
GetPluginNameStatic()818 ABIMacOSX_arm::GetPluginNameStatic()
819 {
820 static ConstString g_name("macosx-arm");
821 return g_name;
822 }
823
824 //------------------------------------------------------------------
825 // PluginInterface protocol
826 //------------------------------------------------------------------
827 lldb_private::ConstString
GetPluginName()828 ABIMacOSX_arm::GetPluginName()
829 {
830 return GetPluginNameStatic();
831 }
832
833 uint32_t
GetPluginVersion()834 ABIMacOSX_arm::GetPluginVersion()
835 {
836 return 1;
837 }
838
839