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/STLExtras.h"
28 #include "llvm/ADT/Triple.h"
29
30 #include "Utility/ARM_DWARF_Registers.h"
31 #include "Utility/ARM_GCC_Registers.h"
32 #include "Plugins/Process/Utility/ARMDefines.h"
33
34 #include <vector>
35
36 using namespace lldb;
37 using namespace lldb_private;
38
39 static RegisterInfo g_register_infos[] =
40 {
41 // NAME ALT SZ OFF ENCODING FORMAT COMPILER DWARF GENERIC GDB LLDB NATIVE VALUE REGS INVALIDATE REGS
42 // ========== ======= == === ============= ============ ======================= =================== =========================== ======================= ====================== ========== ===============
43 { "r0", "arg1", 4, 0, eEncodingUint , eFormatHex, { gcc_r0, dwarf_r0, LLDB_REGNUM_GENERIC_ARG1, gdb_arm_r0, LLDB_INVALID_REGNUM }, NULL, NULL},
44 { "r1", "arg2", 4, 0, eEncodingUint , eFormatHex, { gcc_r1, dwarf_r1, LLDB_REGNUM_GENERIC_ARG2, gdb_arm_r1, LLDB_INVALID_REGNUM }, NULL, NULL},
45 { "r2", "arg3", 4, 0, eEncodingUint , eFormatHex, { gcc_r2, dwarf_r2, LLDB_REGNUM_GENERIC_ARG3, gdb_arm_r2, LLDB_INVALID_REGNUM }, NULL, NULL},
46 { "r3", "arg4", 4, 0, eEncodingUint , eFormatHex, { gcc_r3, dwarf_r3, LLDB_REGNUM_GENERIC_ARG4, gdb_arm_r3, LLDB_INVALID_REGNUM }, NULL, NULL},
47 { "r4", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r4, dwarf_r4, LLDB_INVALID_REGNUM, gdb_arm_r4, LLDB_INVALID_REGNUM }, NULL, NULL},
48 { "r5", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r5, dwarf_r5, LLDB_INVALID_REGNUM, gdb_arm_r5, LLDB_INVALID_REGNUM }, NULL, NULL},
49 { "r6", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r6, dwarf_r6, LLDB_INVALID_REGNUM, gdb_arm_r6, LLDB_INVALID_REGNUM }, NULL, NULL},
50 { "r7", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, gdb_arm_r7, LLDB_INVALID_REGNUM }, NULL, NULL},
51 { "r8", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r8, dwarf_r8, LLDB_INVALID_REGNUM, gdb_arm_r8, LLDB_INVALID_REGNUM }, NULL, NULL},
52 { "r9", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r9, dwarf_r9, LLDB_INVALID_REGNUM, gdb_arm_r9, LLDB_INVALID_REGNUM }, NULL, NULL},
53 { "r10", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r10, dwarf_r10, LLDB_INVALID_REGNUM, gdb_arm_r10, LLDB_INVALID_REGNUM }, NULL, NULL},
54 { "r11", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r11, dwarf_r11, LLDB_INVALID_REGNUM, gdb_arm_r11, LLDB_INVALID_REGNUM }, NULL, NULL},
55 { "r12", NULL, 4, 0, eEncodingUint , eFormatHex, { gcc_r12, dwarf_r12, LLDB_INVALID_REGNUM, gdb_arm_r12, LLDB_INVALID_REGNUM }, NULL, NULL},
56 { "sp", "r13", 4, 0, eEncodingUint , eFormatHex, { gcc_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, gdb_arm_sp, LLDB_INVALID_REGNUM }, NULL, NULL},
57 { "lr", "r14", 4, 0, eEncodingUint , eFormatHex, { gcc_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, gdb_arm_lr, LLDB_INVALID_REGNUM }, NULL, NULL},
58 { "pc", "r15", 4, 0, eEncodingUint , eFormatHex, { gcc_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, gdb_arm_pc, LLDB_INVALID_REGNUM }, NULL, NULL},
59 { "cpsr", "psr", 4, 0, eEncodingUint , eFormatHex, { gcc_cpsr, dwarf_cpsr, LLDB_REGNUM_GENERIC_FLAGS, gdb_arm_cpsr, LLDB_INVALID_REGNUM }, NULL, NULL},
60 { "s0", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, gdb_arm_s0, LLDB_INVALID_REGNUM }, NULL, NULL},
61 { "s1", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, gdb_arm_s1, LLDB_INVALID_REGNUM }, NULL, NULL},
62 { "s2", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, gdb_arm_s2, LLDB_INVALID_REGNUM }, NULL, NULL},
63 { "s3", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, gdb_arm_s3, LLDB_INVALID_REGNUM }, NULL, NULL},
64 { "s4", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, gdb_arm_s4, LLDB_INVALID_REGNUM }, NULL, NULL},
65 { "s5", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, gdb_arm_s5, LLDB_INVALID_REGNUM }, NULL, NULL},
66 { "s6", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, gdb_arm_s6, LLDB_INVALID_REGNUM }, NULL, NULL},
67 { "s7", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, gdb_arm_s7, LLDB_INVALID_REGNUM }, NULL, NULL},
68 { "s8", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, gdb_arm_s8, LLDB_INVALID_REGNUM }, NULL, NULL},
69 { "s9", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, gdb_arm_s9, LLDB_INVALID_REGNUM }, NULL, NULL},
70 { "s10", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, gdb_arm_s10, LLDB_INVALID_REGNUM }, NULL, NULL},
71 { "s11", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, gdb_arm_s11, LLDB_INVALID_REGNUM }, NULL, NULL},
72 { "s12", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, gdb_arm_s12, LLDB_INVALID_REGNUM }, NULL, NULL},
73 { "s13", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, gdb_arm_s13, LLDB_INVALID_REGNUM }, NULL, NULL},
74 { "s14", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, gdb_arm_s14, LLDB_INVALID_REGNUM }, NULL, NULL},
75 { "s15", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, gdb_arm_s15, LLDB_INVALID_REGNUM }, NULL, NULL},
76 { "s16", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, gdb_arm_s16, LLDB_INVALID_REGNUM }, NULL, NULL},
77 { "s17", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, gdb_arm_s17, LLDB_INVALID_REGNUM }, NULL, NULL},
78 { "s18", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, gdb_arm_s18, LLDB_INVALID_REGNUM }, NULL, NULL},
79 { "s19", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, gdb_arm_s19, LLDB_INVALID_REGNUM }, NULL, NULL},
80 { "s20", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, gdb_arm_s20, LLDB_INVALID_REGNUM }, NULL, NULL},
81 { "s21", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, gdb_arm_s21, LLDB_INVALID_REGNUM }, NULL, NULL},
82 { "s22", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, gdb_arm_s22, LLDB_INVALID_REGNUM }, NULL, NULL},
83 { "s23", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, gdb_arm_s23, LLDB_INVALID_REGNUM }, NULL, NULL},
84 { "s24", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, gdb_arm_s24, LLDB_INVALID_REGNUM }, NULL, NULL},
85 { "s25", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, gdb_arm_s25, LLDB_INVALID_REGNUM }, NULL, NULL},
86 { "s26", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, gdb_arm_s26, LLDB_INVALID_REGNUM }, NULL, NULL},
87 { "s27", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, gdb_arm_s27, LLDB_INVALID_REGNUM }, NULL, NULL},
88 { "s28", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, gdb_arm_s28, LLDB_INVALID_REGNUM }, NULL, NULL},
89 { "s29", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, gdb_arm_s29, LLDB_INVALID_REGNUM }, NULL, NULL},
90 { "s30", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, gdb_arm_s30, LLDB_INVALID_REGNUM }, NULL, NULL},
91 { "s31", NULL, 4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, gdb_arm_s31, LLDB_INVALID_REGNUM }, NULL, NULL},
92 { "fpscr", NULL, 4, 0, eEncodingUint , eFormatHex , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, gdb_arm_fpscr, LLDB_INVALID_REGNUM }, NULL, NULL},
93 { "d0", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d0, LLDB_INVALID_REGNUM, gdb_arm_d0, LLDB_INVALID_REGNUM }, NULL, NULL},
94 { "d1", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d1, LLDB_INVALID_REGNUM, gdb_arm_d1, LLDB_INVALID_REGNUM }, NULL, NULL},
95 { "d2", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d2, LLDB_INVALID_REGNUM, gdb_arm_d2, LLDB_INVALID_REGNUM }, NULL, NULL},
96 { "d3", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d3, LLDB_INVALID_REGNUM, gdb_arm_d3, LLDB_INVALID_REGNUM }, NULL, NULL},
97 { "d4", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d4, LLDB_INVALID_REGNUM, gdb_arm_d4, LLDB_INVALID_REGNUM }, NULL, NULL},
98 { "d5", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d5, LLDB_INVALID_REGNUM, gdb_arm_d5, LLDB_INVALID_REGNUM }, NULL, NULL},
99 { "d6", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d6, LLDB_INVALID_REGNUM, gdb_arm_d6, LLDB_INVALID_REGNUM }, NULL, NULL},
100 { "d7", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d7, LLDB_INVALID_REGNUM, gdb_arm_d7, LLDB_INVALID_REGNUM }, NULL, NULL},
101 { "d8", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d8, LLDB_INVALID_REGNUM, gdb_arm_d8, LLDB_INVALID_REGNUM }, NULL, NULL},
102 { "d9", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d9, LLDB_INVALID_REGNUM, gdb_arm_d9, LLDB_INVALID_REGNUM }, NULL, NULL},
103 { "d10", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d10, LLDB_INVALID_REGNUM, gdb_arm_d10, LLDB_INVALID_REGNUM }, NULL, NULL},
104 { "d11", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d11, LLDB_INVALID_REGNUM, gdb_arm_d11, LLDB_INVALID_REGNUM }, NULL, NULL},
105 { "d12", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d12, LLDB_INVALID_REGNUM, gdb_arm_d12, LLDB_INVALID_REGNUM }, NULL, NULL},
106 { "d13", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d13, LLDB_INVALID_REGNUM, gdb_arm_d13, LLDB_INVALID_REGNUM }, NULL, NULL},
107 { "d14", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d14, LLDB_INVALID_REGNUM, gdb_arm_d14, LLDB_INVALID_REGNUM }, NULL, NULL},
108 { "d15", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d15, LLDB_INVALID_REGNUM, gdb_arm_d15, LLDB_INVALID_REGNUM }, NULL, NULL},
109 { "d16", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d16, LLDB_INVALID_REGNUM, gdb_arm_d16, LLDB_INVALID_REGNUM }, NULL, NULL},
110 { "d17", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d17, LLDB_INVALID_REGNUM, gdb_arm_d17, LLDB_INVALID_REGNUM }, NULL, NULL},
111 { "d18", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d18, LLDB_INVALID_REGNUM, gdb_arm_d18, LLDB_INVALID_REGNUM }, NULL, NULL},
112 { "d19", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d19, LLDB_INVALID_REGNUM, gdb_arm_d19, LLDB_INVALID_REGNUM }, NULL, NULL},
113 { "d20", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d20, LLDB_INVALID_REGNUM, gdb_arm_d20, LLDB_INVALID_REGNUM }, NULL, NULL},
114 { "d21", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d21, LLDB_INVALID_REGNUM, gdb_arm_d21, LLDB_INVALID_REGNUM }, NULL, NULL},
115 { "d22", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d22, LLDB_INVALID_REGNUM, gdb_arm_d22, LLDB_INVALID_REGNUM }, NULL, NULL},
116 { "d23", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d23, LLDB_INVALID_REGNUM, gdb_arm_d23, LLDB_INVALID_REGNUM }, NULL, NULL},
117 { "d24", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d24, LLDB_INVALID_REGNUM, gdb_arm_d24, LLDB_INVALID_REGNUM }, NULL, NULL},
118 { "d25", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d25, LLDB_INVALID_REGNUM, gdb_arm_d25, LLDB_INVALID_REGNUM }, NULL, NULL},
119 { "d26", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d26, LLDB_INVALID_REGNUM, gdb_arm_d26, LLDB_INVALID_REGNUM }, NULL, NULL},
120 { "d27", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d27, LLDB_INVALID_REGNUM, gdb_arm_d27, LLDB_INVALID_REGNUM }, NULL, NULL},
121 { "d28", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d28, LLDB_INVALID_REGNUM, gdb_arm_d28, LLDB_INVALID_REGNUM }, NULL, NULL},
122 { "d29", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d29, LLDB_INVALID_REGNUM, gdb_arm_d29, LLDB_INVALID_REGNUM }, NULL, NULL},
123 { "d30", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d30, LLDB_INVALID_REGNUM, gdb_arm_d30, LLDB_INVALID_REGNUM }, NULL, NULL},
124 { "d31", NULL, 8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_d31, LLDB_INVALID_REGNUM, gdb_arm_d31, LLDB_INVALID_REGNUM }, NULL, NULL},
125 { "r8_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r8_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
126 { "r9_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r9_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
127 { "r10_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r10_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
128 { "r11_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r11_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
129 { "r12_usr", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r12_usr, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
130 { "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},
131 { "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},
132 { "r8_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r8_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
133 { "r9_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r9_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
134 { "r10_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r10_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
135 { "r11_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r11_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
136 { "r12_fiq", NULL, 4, 0, eEncodingUint , eFormatHex, { LLDB_INVALID_REGNUM, dwarf_r12_fiq, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM }, NULL, NULL},
137 { "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},
138 { "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},
139 { "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},
140 { "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},
141 { "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},
142 { "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},
143 { "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},
144 { "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},
145 { "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},
146 { "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}
147 };
148 static const uint32_t k_num_register_infos = llvm::array_lengthof(g_register_infos);
149 static bool g_register_info_names_constified = false;
150
151 const lldb_private::RegisterInfo *
GetRegisterInfoArray(uint32_t & count)152 ABIMacOSX_arm::GetRegisterInfoArray (uint32_t &count)
153 {
154 // Make the C-string names and alt_names for the register infos into const
155 // C-string values by having the ConstString unique the names in the global
156 // constant C-string pool.
157 if (!g_register_info_names_constified)
158 {
159 g_register_info_names_constified = true;
160 for (uint32_t i=0; i<k_num_register_infos; ++i)
161 {
162 if (g_register_infos[i].name)
163 g_register_infos[i].name = ConstString(g_register_infos[i].name).GetCString();
164 if (g_register_infos[i].alt_name)
165 g_register_infos[i].alt_name = ConstString(g_register_infos[i].alt_name).GetCString();
166 }
167 }
168 count = k_num_register_infos;
169 return g_register_infos;
170 }
171
172
173 size_t
GetRedZoneSize() const174 ABIMacOSX_arm::GetRedZoneSize () const
175 {
176 return 0;
177 }
178
179 //------------------------------------------------------------------
180 // Static Functions
181 //------------------------------------------------------------------
182 ABISP
CreateInstance(const ArchSpec & arch)183 ABIMacOSX_arm::CreateInstance (const ArchSpec &arch)
184 {
185 static ABISP g_abi_sp;
186 const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
187 const llvm::Triple::VendorType vendor_type = arch.GetTriple().getVendor();
188
189 if (vendor_type == llvm::Triple::Apple)
190 {
191 if ((arch_type == llvm::Triple::arm) ||
192 (arch_type == llvm::Triple::thumb))
193 {
194 if (!g_abi_sp)
195 g_abi_sp.reset (new ABIMacOSX_arm);
196 return g_abi_sp;
197 }
198 }
199
200 return ABISP();
201 }
202
203 bool
PrepareTrivialCall(Thread & thread,addr_t sp,addr_t function_addr,addr_t return_addr,llvm::ArrayRef<addr_t> args) const204 ABIMacOSX_arm::PrepareTrivialCall (Thread &thread,
205 addr_t sp,
206 addr_t function_addr,
207 addr_t return_addr,
208 llvm::ArrayRef<addr_t> args) const
209 {
210 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
211 if (!reg_ctx)
212 return false;
213
214 const uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
215 const uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
216 const uint32_t ra_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA);
217
218 RegisterValue reg_value;
219
220 const char *reg_names[] = { "r0", "r1", "r2", "r3" };
221
222 llvm::ArrayRef<addr_t>::iterator ai = args.begin(), ae = args.end();
223
224 for (size_t i = 0; i < llvm::array_lengthof(reg_names); ++i)
225 {
226 if (ai == ae)
227 break;
228
229 reg_value.SetUInt32(*ai);
230 if (!reg_ctx->WriteRegister(reg_ctx->GetRegisterInfoByName(reg_names[i]), reg_value))
231 return false;
232
233 ++ai;
234 }
235
236 if (ai != ae)
237 {
238 // Spill onto the stack
239 size_t num_stack_regs = ae - ai;
240
241 sp -= (num_stack_regs * 4);
242 // Keep the stack 8 byte aligned, not that we need to
243 sp &= ~(8ull-1ull);
244
245 // just using arg1 to get the right size
246 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1);
247
248 addr_t arg_pos = sp;
249
250 for (; ai != ae; ++ai)
251 {
252 reg_value.SetUInt32(*ai);
253 if (reg_ctx->WriteRegisterValueToMemory(reg_info, arg_pos, reg_info->byte_size, reg_value).Fail())
254 return false;
255 arg_pos += reg_info->byte_size;
256 }
257 }
258
259 TargetSP target_sp (thread.CalculateTarget());
260 Address so_addr;
261
262 // Figure out if our return address is ARM or Thumb by using the
263 // Address::GetCallableLoadAddress(Target*) which will figure out the ARM
264 // thumb-ness and set the correct address bits for us.
265 so_addr.SetLoadAddress (return_addr, target_sp.get());
266 return_addr = so_addr.GetCallableLoadAddress (target_sp.get());
267
268 // Set "lr" to the return address
269 if (!reg_ctx->WriteRegisterFromUnsigned (ra_reg_num, return_addr))
270 return false;
271
272 // Set "sp" to the requested value
273 if (!reg_ctx->WriteRegisterFromUnsigned (sp_reg_num, sp))
274 return false;
275
276 // If bit zero or 1 is set, this must be a thumb function, no need to figure
277 // this out from the symbols.
278 so_addr.SetLoadAddress (function_addr, target_sp.get());
279 function_addr = so_addr.GetCallableLoadAddress (target_sp.get());
280
281 const RegisterInfo *cpsr_reg_info = reg_ctx->GetRegisterInfoByName("cpsr");
282 const uint32_t curr_cpsr = reg_ctx->ReadRegisterAsUnsigned(cpsr_reg_info, 0);
283
284 // Make a new CPSR and mask out any Thumb IT (if/then) bits
285 uint32_t new_cpsr = curr_cpsr & ~MASK_CPSR_IT_MASK;
286 // If bit zero or 1 is set, this must be thumb...
287 if (function_addr & 1ull)
288 new_cpsr |= MASK_CPSR_T; // Set T bit in CPSR
289 else
290 new_cpsr &= ~MASK_CPSR_T; // Clear T bit in CPSR
291
292 if (new_cpsr != curr_cpsr)
293 {
294 if (!reg_ctx->WriteRegisterFromUnsigned (cpsr_reg_info, new_cpsr))
295 return false;
296 }
297
298 function_addr &= ~1ull; // clear bit zero since the CPSR will take care of the mode for us
299
300 // Set "pc" to the address requested
301 if (!reg_ctx->WriteRegisterFromUnsigned (pc_reg_num, function_addr))
302 return false;
303
304 return true;
305 }
306
307 bool
GetArgumentValues(Thread & thread,ValueList & values) const308 ABIMacOSX_arm::GetArgumentValues (Thread &thread,
309 ValueList &values) const
310 {
311 uint32_t num_values = values.GetSize();
312
313
314 ExecutionContext exe_ctx (thread.shared_from_this());
315 // For now, assume that the types in the AST values come from the Target's
316 // scratch AST.
317
318 // Extract the register context so we can read arguments from registers
319
320 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
321
322 if (!reg_ctx)
323 return false;
324
325 addr_t sp = 0;
326
327 for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx)
328 {
329 // We currently only support extracting values with Clang QualTypes.
330 // Do we care about others?
331 Value *value = values.GetValueAtIndex(value_idx);
332
333 if (!value)
334 return false;
335
336 ClangASTType clang_type = value->GetClangType();
337 if (clang_type)
338 {
339 bool is_signed = false;
340 size_t bit_width = 0;
341 if (clang_type.IsIntegerType (is_signed))
342 {
343 bit_width = clang_type.GetBitSize(&thread);
344 }
345 else if (clang_type.IsPointerOrReferenceType ())
346 {
347 bit_width = clang_type.GetBitSize(&thread);
348 }
349 else
350 {
351 // We only handle integer, pointer and reference types currently...
352 return false;
353 }
354
355 if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8))
356 {
357 if (value_idx < 4)
358 {
359 // Arguments 1-4 are in r0-r3...
360 const RegisterInfo *arg_reg_info = NULL;
361 // Search by generic ID first, then fall back to by name
362 uint32_t arg_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + value_idx);
363 if (arg_reg_num != LLDB_INVALID_REGNUM)
364 {
365 arg_reg_info = reg_ctx->GetRegisterInfoAtIndex(arg_reg_num);
366 }
367 else
368 {
369 switch (value_idx)
370 {
371 case 0: arg_reg_info = reg_ctx->GetRegisterInfoByName("r0"); break;
372 case 1: arg_reg_info = reg_ctx->GetRegisterInfoByName("r1"); break;
373 case 2: arg_reg_info = reg_ctx->GetRegisterInfoByName("r2"); break;
374 case 3: arg_reg_info = reg_ctx->GetRegisterInfoByName("r3"); break;
375 }
376 }
377
378 if (arg_reg_info)
379 {
380 RegisterValue reg_value;
381
382 if (reg_ctx->ReadRegister(arg_reg_info, reg_value))
383 {
384 if (is_signed)
385 reg_value.SignExtend(bit_width);
386 if (!reg_value.GetScalarValue(value->GetScalar()))
387 return false;
388 continue;
389 }
390 }
391 return false;
392 }
393 else
394 {
395 if (sp == 0)
396 {
397 // Read the stack pointer if it already hasn't been read
398 sp = reg_ctx->GetSP(0);
399 if (sp == 0)
400 return false;
401 }
402
403 // Arguments 5 on up are on the stack
404 const uint32_t arg_byte_size = (bit_width + (8-1)) / 8;
405 Error error;
406 if (!exe_ctx.GetProcessRef().ReadScalarIntegerFromMemory(sp, arg_byte_size, is_signed, value->GetScalar(), error))
407 return false;
408
409 sp += arg_byte_size;
410 }
411 }
412 }
413 }
414 return true;
415 }
416
417 ValueObjectSP
GetReturnValueObjectImpl(Thread & thread,lldb_private::ClangASTType & clang_type) const418 ABIMacOSX_arm::GetReturnValueObjectImpl (Thread &thread,
419 lldb_private::ClangASTType &clang_type) const
420 {
421 Value value;
422 ValueObjectSP return_valobj_sp;
423
424 if (!clang_type)
425 return return_valobj_sp;
426
427 clang::ASTContext *ast_context = clang_type.GetASTContext();
428 if (!ast_context)
429 return return_valobj_sp;
430
431 //value.SetContext (Value::eContextTypeClangType, clang_type.GetOpaqueQualType());
432 value.SetClangType (clang_type);
433
434 RegisterContext *reg_ctx = thread.GetRegisterContext().get();
435 if (!reg_ctx)
436 return return_valobj_sp;
437
438 bool is_signed;
439
440 // Get the pointer to the first stack argument so we have a place to start
441 // when reading data
442
443 const RegisterInfo *r0_reg_info = reg_ctx->GetRegisterInfoByName("r0", 0);
444 if (clang_type.IsIntegerType (is_signed))
445 {
446 size_t bit_width = clang_type.GetBitSize(&thread);
447
448 switch (bit_width)
449 {
450 default:
451 return return_valobj_sp;
452 case 64:
453 {
454 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfoByName("r1", 0);
455 uint64_t raw_value;
456 raw_value = reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
457 raw_value |= ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) & UINT32_MAX)) << 32;
458 if (is_signed)
459 value.GetScalar() = (int64_t)raw_value;
460 else
461 value.GetScalar() = (uint64_t)raw_value;
462 }
463 break;
464 case 32:
465 if (is_signed)
466 value.GetScalar() = (int32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
467 else
468 value.GetScalar() = (uint32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
469 break;
470 case 16:
471 if (is_signed)
472 value.GetScalar() = (int16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
473 else
474 value.GetScalar() = (uint16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
475 break;
476 case 8:
477 if (is_signed)
478 value.GetScalar() = (int8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
479 else
480 value.GetScalar() = (uint8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
481 break;
482 }
483 }
484 else if (clang_type.IsPointerType ())
485 {
486 uint32_t ptr = thread.GetRegisterContext()->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
487 value.GetScalar() = ptr;
488 }
489 else
490 {
491 // not handled yet
492 return return_valobj_sp;
493 }
494
495 // If we get here, we have a valid Value, so make our ValueObject out of it:
496
497 return_valobj_sp = ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(),
498 value,
499 ConstString(""));
500 return return_valobj_sp;
501 }
502
503 Error
SetReturnValueObject(lldb::StackFrameSP & frame_sp,lldb::ValueObjectSP & new_value_sp)504 ABIMacOSX_arm::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp)
505 {
506 Error error;
507 if (!new_value_sp)
508 {
509 error.SetErrorString("Empty value object for return value.");
510 return error;
511 }
512
513 ClangASTType clang_type = new_value_sp->GetClangType();
514 if (!clang_type)
515 {
516 error.SetErrorString ("Null clang type for return value.");
517 return error;
518 }
519
520 Thread *thread = frame_sp->GetThread().get();
521
522 bool is_signed;
523 uint32_t count;
524 bool is_complex;
525
526 RegisterContext *reg_ctx = thread->GetRegisterContext().get();
527
528 bool set_it_simple = false;
529 if (clang_type.IsIntegerType (is_signed) || clang_type.IsPointerType())
530 {
531 DataExtractor data;
532 Error data_error;
533 size_t num_bytes = new_value_sp->GetData(data, data_error);
534 if (data_error.Fail())
535 {
536 error.SetErrorStringWithFormat("Couldn't convert return value to raw data: %s", data_error.AsCString());
537 return error;
538 }
539 lldb::offset_t offset = 0;
540 if (num_bytes <= 8)
541 {
542 const RegisterInfo *r0_info = reg_ctx->GetRegisterInfoByName("r0", 0);
543 if (num_bytes <= 4)
544 {
545 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
546
547 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
548 set_it_simple = true;
549 }
550 else
551 {
552 uint32_t raw_value = data.GetMaxU32(&offset, 4);
553
554 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
555 {
556 const RegisterInfo *r1_info = reg_ctx->GetRegisterInfoByName("r1", 0);
557 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset);
558
559 if (reg_ctx->WriteRegisterFromUnsigned (r1_info, raw_value))
560 set_it_simple = true;
561 }
562 }
563 }
564 else
565 {
566 error.SetErrorString("We don't support returning longer than 64 bit integer values at present.");
567 }
568 }
569 else if (clang_type.IsFloatingPointType (count, is_complex))
570 {
571 if (is_complex)
572 error.SetErrorString ("We don't support returning complex values at present");
573 else
574 error.SetErrorString ("We don't support returning float values at present");
575 }
576
577 if (!set_it_simple)
578 error.SetErrorString ("We only support setting simple integer return types at present.");
579
580 return error;
581 }
582
583 bool
CreateFunctionEntryUnwindPlan(UnwindPlan & unwind_plan)584 ABIMacOSX_arm::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan)
585 {
586 unwind_plan.Clear();
587 unwind_plan.SetRegisterKind (eRegisterKindDWARF);
588
589 uint32_t lr_reg_num = dwarf_lr;
590 uint32_t sp_reg_num = dwarf_sp;
591 uint32_t pc_reg_num = dwarf_pc;
592
593 UnwindPlan::RowSP row(new UnwindPlan::Row);
594
595 // Our Call Frame Address is the stack pointer value
596 row->GetCFAValue().SetIsRegisterPlusOffset (sp_reg_num, 0);
597
598 // The previous PC is in the LR
599 row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
600 unwind_plan.AppendRow (row);
601
602 // All other registers are the same.
603
604 unwind_plan.SetSourceName ("arm at-func-entry default");
605 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
606
607 return true;
608 }
609
610 bool
CreateDefaultUnwindPlan(UnwindPlan & unwind_plan)611 ABIMacOSX_arm::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan)
612 {
613 unwind_plan.Clear ();
614 unwind_plan.SetRegisterKind (eRegisterKindDWARF);
615
616 uint32_t fp_reg_num = dwarf_r7; // apple uses r7 for all frames. Normal arm uses r11
617 uint32_t pc_reg_num = dwarf_pc;
618
619 UnwindPlan::RowSP row(new UnwindPlan::Row);
620 const int32_t ptr_size = 4;
621
622 row->GetCFAValue().SetIsRegisterPlusOffset (fp_reg_num, 2 * ptr_size);
623 row->SetOffset (0);
624
625 row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
626 row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
627
628 unwind_plan.AppendRow (row);
629 unwind_plan.SetSourceName ("arm-apple-ios default unwind plan");
630 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
631 unwind_plan.SetUnwindPlanValidAtAllInstructions (eLazyBoolNo);
632
633 return true;
634 }
635
636 // cf. "ARMv6 Function Calling Conventions"
637 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv6FunctionCallingConventions.html
638 // and "ARMv7 Function Calling Conventions"
639 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv7FunctionCallingConventions.html
640
641 // ARMv7 on iOS general purpose reg rules:
642 // r0-r3 not preserved (used for argument passing)
643 // r4-r6 preserved
644 // r7 preserved (frame pointer)
645 // r8 preserved
646 // r9 not preserved (usable as volatile scratch register with iOS 3.x and later)
647 // r10-r11 preserved
648 // r12 not presrved
649 // r13 preserved (stack pointer)
650 // r14 not preserved (link register)
651 // r15 preserved (pc)
652 // cpsr not preserved (different rules for different bits)
653
654 // ARMv7 on iOS floating point rules:
655 // d0-d7 not preserved (aka s0-s15, q0-q3)
656 // d8-d15 preserved (aka s16-s31, q4-q7)
657 // d16-d31 not preserved (aka q8-q15)
658
659 bool
RegisterIsVolatile(const RegisterInfo * reg_info)660 ABIMacOSX_arm::RegisterIsVolatile (const RegisterInfo *reg_info)
661 {
662 if (reg_info)
663 {
664 // Volatile registers are: r0, r1, r2, r3, r9, r12, r13 (aka sp)
665 const char *name = reg_info->name;
666 if (name[0] == 'r')
667 {
668 switch (name[1])
669 {
670 case '0': return name[2] == '\0'; // r0
671 case '1':
672 switch (name[2])
673 {
674 case '\0':
675 return true; // r1
676 case '2':
677 case '3':
678 return name[3] == '\0'; // r12, r13 (sp)
679 default:
680 break;
681 }
682 break;
683
684 case '2': return name[2] == '\0'; // r2
685 case '3': return name[2] == '\0'; // r3
686 case '9': return name[2] == '\0'; // r9 (apple-ios only...)
687
688 break;
689 }
690 }
691 else if (name[0] == 'd')
692 {
693 switch (name[1])
694 {
695 case '0':
696 return name[2] == '\0'; // d0 is volatile
697
698 case '1':
699 switch (name[2])
700 {
701 case '\0':
702 return true; // d1 is volatile
703 case '6':
704 case '7':
705 case '8':
706 case '9':
707 return name[3] == '\0'; // d16 - d19 are volatile
708 default:
709 break;
710 }
711 break;
712
713 case '2':
714 switch (name[2])
715 {
716 case '\0':
717 return true; // d2 is volatile
718 case '0':
719 case '1':
720 case '2':
721 case '3':
722 case '4':
723 case '5':
724 case '6':
725 case '7':
726 case '8':
727 case '9':
728 return name[3] == '\0'; // d20 - d29 are volatile
729 default:
730 break;
731 }
732 break;
733
734 case '3':
735 switch (name[2])
736 {
737 case '\0':
738 return true; // d3 is volatile
739 case '0':
740 case '1':
741 return name[3] == '\0'; // d30 - d31 are volatile
742 default:
743 break;
744 }
745 case '4':
746 case '5':
747 case '6':
748 case '7':
749 return name[2] == '\0'; // d4 - d7 are volatile
750
751 default:
752 break;
753 }
754 }
755 else if (name[0] == 's')
756 {
757 switch (name[1])
758 {
759 case '0':
760 return name[2] == '\0'; // s0 is volatile
761
762 case '1':
763 switch (name[2])
764 {
765 case '\0':
766 return true; // s1 is volatile
767 case '0':
768 case '1':
769 case '2':
770 case '3':
771 case '4':
772 case '5':
773 return name[3] == '\0'; // s10 - s15 are volatile
774 default:
775 break;
776 }
777 break;
778
779 case '2':
780 switch (name[2])
781 {
782 case '\0':
783 return true; // s2 is volatile
784 default:
785 break;
786 }
787 break;
788
789 case '3':
790 switch (name[2])
791 {
792 case '\0':
793 return true; // s3 is volatile
794 default:
795 break;
796 }
797 case '4':
798 case '5':
799 case '6':
800 case '7':
801 case '8':
802 case '9':
803 return name[2] == '\0'; // s4 - s9 are volatile
804
805 default:
806 break;
807 }
808 }
809 else if (name[0] == 'q')
810 {
811 switch (name[1])
812 {
813 case '1':
814 switch (name[2])
815 {
816 case '\0':
817 return true; // q1 is volatile
818 case '0':
819 case '1':
820 case '2':
821 case '3':
822 case '4':
823 case '5':
824 return true; // q10-q15 are volatile
825 default:
826 break;
827 };
828 case '0':
829 case '2':
830 case '3':
831 return name[2] == '\0'; // q0-q3 are volatile
832 case '8':
833 case '9':
834 return name[2] == '\0'; // q8-q9 are volatile
835 default:
836 break;
837 }
838 }
839 else if (name[0] == 's' && name[1] == 'p' && name[2] == '\0')
840 return true;
841 }
842 return false;
843 }
844
845 void
Initialize()846 ABIMacOSX_arm::Initialize()
847 {
848 PluginManager::RegisterPlugin (GetPluginNameStatic(),
849 "Mac OS X ABI for arm targets",
850 CreateInstance);
851 }
852
853 void
Terminate()854 ABIMacOSX_arm::Terminate()
855 {
856 PluginManager::UnregisterPlugin (CreateInstance);
857 }
858
859 lldb_private::ConstString
GetPluginNameStatic()860 ABIMacOSX_arm::GetPluginNameStatic()
861 {
862 static ConstString g_name("macosx-arm");
863 return g_name;
864 }
865
866 //------------------------------------------------------------------
867 // PluginInterface protocol
868 //------------------------------------------------------------------
869 lldb_private::ConstString
GetPluginName()870 ABIMacOSX_arm::GetPluginName()
871 {
872 return GetPluginNameStatic();
873 }
874
875 uint32_t
GetPluginVersion()876 ABIMacOSX_arm::GetPluginVersion()
877 {
878 return 1;
879 }
880
881