| //===-- RegisterContextDarwin_arm.cpp ---------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #if defined(__APPLE__) |
| |
| #include "RegisterContextDarwin_arm.h" |
| |
| // C Includes |
| #include <mach/mach_types.h> |
| #include <mach/thread_act.h> |
| |
| // C++ Includes |
| // Other libraries and framework includes |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/DataExtractor.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/RegisterValue.h" |
| #include "lldb/Core/Scalar.h" |
| #include "lldb/Host/Endian.h" |
| #include "llvm/Support/Compiler.h" |
| |
| #include "Plugins/Process/Utility/InstructionUtils.h" |
| |
| // Support building against older versions of LLVM, this macro was added |
| // recently. |
| #ifndef LLVM_EXTENSION |
| #define LLVM_EXTENSION |
| #endif |
| |
| // Project includes |
| #include "ARM_GCC_Registers.h" |
| #include "ARM_DWARF_Registers.h" |
| |
| #include "llvm/ADT/STLExtras.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| enum |
| { |
| gpr_r0 = 0, |
| gpr_r1, |
| gpr_r2, |
| gpr_r3, |
| gpr_r4, |
| gpr_r5, |
| gpr_r6, |
| gpr_r7, |
| gpr_r8, |
| gpr_r9, |
| gpr_r10, |
| gpr_r11, |
| gpr_r12, |
| gpr_r13, gpr_sp = gpr_r13, |
| gpr_r14, gpr_lr = gpr_r14, |
| gpr_r15, gpr_pc = gpr_r15, |
| gpr_cpsr, |
| |
| fpu_s0, |
| fpu_s1, |
| fpu_s2, |
| fpu_s3, |
| fpu_s4, |
| fpu_s5, |
| fpu_s6, |
| fpu_s7, |
| fpu_s8, |
| fpu_s9, |
| fpu_s10, |
| fpu_s11, |
| fpu_s12, |
| fpu_s13, |
| fpu_s14, |
| fpu_s15, |
| fpu_s16, |
| fpu_s17, |
| fpu_s18, |
| fpu_s19, |
| fpu_s20, |
| fpu_s21, |
| fpu_s22, |
| fpu_s23, |
| fpu_s24, |
| fpu_s25, |
| fpu_s26, |
| fpu_s27, |
| fpu_s28, |
| fpu_s29, |
| fpu_s30, |
| fpu_s31, |
| fpu_fpscr, |
| |
| exc_exception, |
| exc_fsr, |
| exc_far, |
| |
| dbg_bvr0, |
| dbg_bvr1, |
| dbg_bvr2, |
| dbg_bvr3, |
| dbg_bvr4, |
| dbg_bvr5, |
| dbg_bvr6, |
| dbg_bvr7, |
| dbg_bvr8, |
| dbg_bvr9, |
| dbg_bvr10, |
| dbg_bvr11, |
| dbg_bvr12, |
| dbg_bvr13, |
| dbg_bvr14, |
| dbg_bvr15, |
| |
| dbg_bcr0, |
| dbg_bcr1, |
| dbg_bcr2, |
| dbg_bcr3, |
| dbg_bcr4, |
| dbg_bcr5, |
| dbg_bcr6, |
| dbg_bcr7, |
| dbg_bcr8, |
| dbg_bcr9, |
| dbg_bcr10, |
| dbg_bcr11, |
| dbg_bcr12, |
| dbg_bcr13, |
| dbg_bcr14, |
| dbg_bcr15, |
| |
| dbg_wvr0, |
| dbg_wvr1, |
| dbg_wvr2, |
| dbg_wvr3, |
| dbg_wvr4, |
| dbg_wvr5, |
| dbg_wvr6, |
| dbg_wvr7, |
| dbg_wvr8, |
| dbg_wvr9, |
| dbg_wvr10, |
| dbg_wvr11, |
| dbg_wvr12, |
| dbg_wvr13, |
| dbg_wvr14, |
| dbg_wvr15, |
| |
| dbg_wcr0, |
| dbg_wcr1, |
| dbg_wcr2, |
| dbg_wcr3, |
| dbg_wcr4, |
| dbg_wcr5, |
| dbg_wcr6, |
| dbg_wcr7, |
| dbg_wcr8, |
| dbg_wcr9, |
| dbg_wcr10, |
| dbg_wcr11, |
| dbg_wcr12, |
| dbg_wcr13, |
| dbg_wcr14, |
| dbg_wcr15, |
| |
| k_num_registers |
| }; |
| |
| |
| RegisterContextDarwin_arm::RegisterContextDarwin_arm(Thread &thread, uint32_t concrete_frame_idx) : |
| RegisterContext(thread, concrete_frame_idx), |
| gpr(), |
| fpu(), |
| exc() |
| { |
| uint32_t i; |
| for (i=0; i<kNumErrors; i++) |
| { |
| gpr_errs[i] = -1; |
| fpu_errs[i] = -1; |
| exc_errs[i] = -1; |
| } |
| } |
| |
| RegisterContextDarwin_arm::~RegisterContextDarwin_arm() |
| { |
| } |
| |
| |
| #define GPR_OFFSET(idx) ((idx) * 4) |
| #define FPU_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextDarwin_arm::GPR)) |
| #define EXC_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextDarwin_arm::GPR) + sizeof (RegisterContextDarwin_arm::FPU)) |
| #define DBG_OFFSET(reg) ((LLVM_EXTENSION offsetof (RegisterContextDarwin_arm::DBG, reg) + sizeof (RegisterContextDarwin_arm::GPR) + sizeof (RegisterContextDarwin_arm::FPU) + sizeof (RegisterContextDarwin_arm::EXC))) |
| |
| #define DEFINE_DBG(reg, i) #reg, NULL, sizeof(((RegisterContextDarwin_arm::DBG *)NULL)->reg[i]), DBG_OFFSET(reg[i]), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, dbg_##reg##i }, NULL, NULL |
| #define REG_CONTEXT_SIZE (sizeof (RegisterContextDarwin_arm::GPR) + sizeof (RegisterContextDarwin_arm::FPU) + sizeof (RegisterContextDarwin_arm::EXC)) |
| |
| static RegisterInfo g_register_infos[] = { |
| // General purpose registers |
| // NAME ALT SZ OFFSET ENCODING FORMAT COMPILER DWARF GENERIC GDB LLDB NATIVE VALUE REGS INVALIDATE REGS |
| // ====== ======= == ============= ============= ============ =============== =============== ========================= ===================== ============= ========== =============== |
| { "r0", NULL, 4, GPR_OFFSET(0), eEncodingUint, eFormatHex, { gcc_r0, dwarf_r0, LLDB_INVALID_REGNUM, gdb_arm_r0, gpr_r0 }, NULL, NULL}, |
| { "r1", NULL, 4, GPR_OFFSET(1), eEncodingUint, eFormatHex, { gcc_r1, dwarf_r1, LLDB_INVALID_REGNUM, gdb_arm_r1, gpr_r1 }, NULL, NULL}, |
| { "r2", NULL, 4, GPR_OFFSET(2), eEncodingUint, eFormatHex, { gcc_r2, dwarf_r2, LLDB_INVALID_REGNUM, gdb_arm_r2, gpr_r2 }, NULL, NULL}, |
| { "r3", NULL, 4, GPR_OFFSET(3), eEncodingUint, eFormatHex, { gcc_r3, dwarf_r3, LLDB_INVALID_REGNUM, gdb_arm_r3, gpr_r3 }, NULL, NULL}, |
| { "r4", NULL, 4, GPR_OFFSET(4), eEncodingUint, eFormatHex, { gcc_r4, dwarf_r4, LLDB_INVALID_REGNUM, gdb_arm_r4, gpr_r4 }, NULL, NULL}, |
| { "r5", NULL, 4, GPR_OFFSET(5), eEncodingUint, eFormatHex, { gcc_r5, dwarf_r5, LLDB_INVALID_REGNUM, gdb_arm_r5, gpr_r5 }, NULL, NULL}, |
| { "r6", NULL, 4, GPR_OFFSET(6), eEncodingUint, eFormatHex, { gcc_r6, dwarf_r6, LLDB_INVALID_REGNUM, gdb_arm_r6, gpr_r6 }, NULL, NULL}, |
| { "r7", NULL, 4, GPR_OFFSET(7), eEncodingUint, eFormatHex, { gcc_r7, dwarf_r7, LLDB_REGNUM_GENERIC_FP, gdb_arm_r7, gpr_r7 }, NULL, NULL}, |
| { "r8", NULL, 4, GPR_OFFSET(8), eEncodingUint, eFormatHex, { gcc_r8, dwarf_r8, LLDB_INVALID_REGNUM, gdb_arm_r8, gpr_r8 }, NULL, NULL}, |
| { "r9", NULL, 4, GPR_OFFSET(9), eEncodingUint, eFormatHex, { gcc_r9, dwarf_r9, LLDB_INVALID_REGNUM, gdb_arm_r9, gpr_r9 }, NULL, NULL}, |
| { "r10", NULL, 4, GPR_OFFSET(10), eEncodingUint, eFormatHex, { gcc_r10, dwarf_r10, LLDB_INVALID_REGNUM, gdb_arm_r10, gpr_r10 }, NULL, NULL}, |
| { "r11", NULL, 4, GPR_OFFSET(11), eEncodingUint, eFormatHex, { gcc_r11, dwarf_r11, LLDB_INVALID_REGNUM, gdb_arm_r11, gpr_r11 }, NULL, NULL}, |
| { "r12", NULL, 4, GPR_OFFSET(12), eEncodingUint, eFormatHex, { gcc_r12, dwarf_r12, LLDB_INVALID_REGNUM, gdb_arm_r12, gpr_r12 }, NULL, NULL}, |
| { "sp", "r13", 4, GPR_OFFSET(13), eEncodingUint, eFormatHex, { gcc_sp, dwarf_sp, LLDB_REGNUM_GENERIC_SP, gdb_arm_sp, gpr_sp }, NULL, NULL}, |
| { "lr", "r14", 4, GPR_OFFSET(14), eEncodingUint, eFormatHex, { gcc_lr, dwarf_lr, LLDB_REGNUM_GENERIC_RA, gdb_arm_lr, gpr_lr }, NULL, NULL}, |
| { "pc", "r15", 4, GPR_OFFSET(15), eEncodingUint, eFormatHex, { gcc_pc, dwarf_pc, LLDB_REGNUM_GENERIC_PC, gdb_arm_pc, gpr_pc }, NULL, NULL}, |
| { "cpsr", "psr", 4, GPR_OFFSET(16), eEncodingUint, eFormatHex, { gcc_cpsr, dwarf_cpsr, LLDB_REGNUM_GENERIC_FLAGS, gdb_arm_cpsr, gpr_cpsr }, NULL, NULL}, |
| |
| { "s0", NULL, 4, FPU_OFFSET(0), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s0, LLDB_INVALID_REGNUM, gdb_arm_s0, fpu_s0 }, NULL, NULL}, |
| { "s1", NULL, 4, FPU_OFFSET(1), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s1, LLDB_INVALID_REGNUM, gdb_arm_s1, fpu_s1 }, NULL, NULL}, |
| { "s2", NULL, 4, FPU_OFFSET(2), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s2, LLDB_INVALID_REGNUM, gdb_arm_s2, fpu_s2 }, NULL, NULL}, |
| { "s3", NULL, 4, FPU_OFFSET(3), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s3, LLDB_INVALID_REGNUM, gdb_arm_s3, fpu_s3 }, NULL, NULL}, |
| { "s4", NULL, 4, FPU_OFFSET(4), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s4, LLDB_INVALID_REGNUM, gdb_arm_s4, fpu_s4 }, NULL, NULL}, |
| { "s5", NULL, 4, FPU_OFFSET(5), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s5, LLDB_INVALID_REGNUM, gdb_arm_s5, fpu_s5 }, NULL, NULL}, |
| { "s6", NULL, 4, FPU_OFFSET(6), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s6, LLDB_INVALID_REGNUM, gdb_arm_s6, fpu_s6 }, NULL, NULL}, |
| { "s7", NULL, 4, FPU_OFFSET(7), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s7, LLDB_INVALID_REGNUM, gdb_arm_s7, fpu_s7 }, NULL, NULL}, |
| { "s8", NULL, 4, FPU_OFFSET(8), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s8, LLDB_INVALID_REGNUM, gdb_arm_s8, fpu_s8 }, NULL, NULL}, |
| { "s9", NULL, 4, FPU_OFFSET(9), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s9, LLDB_INVALID_REGNUM, gdb_arm_s9, fpu_s9 }, NULL, NULL}, |
| { "s10", NULL, 4, FPU_OFFSET(10), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s10, LLDB_INVALID_REGNUM, gdb_arm_s10, fpu_s10 }, NULL, NULL}, |
| { "s11", NULL, 4, FPU_OFFSET(11), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s11, LLDB_INVALID_REGNUM, gdb_arm_s11, fpu_s11 }, NULL, NULL}, |
| { "s12", NULL, 4, FPU_OFFSET(12), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s12, LLDB_INVALID_REGNUM, gdb_arm_s12, fpu_s12 }, NULL, NULL}, |
| { "s13", NULL, 4, FPU_OFFSET(13), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s13, LLDB_INVALID_REGNUM, gdb_arm_s13, fpu_s13 }, NULL, NULL}, |
| { "s14", NULL, 4, FPU_OFFSET(14), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s14, LLDB_INVALID_REGNUM, gdb_arm_s14, fpu_s14 }, NULL, NULL}, |
| { "s15", NULL, 4, FPU_OFFSET(15), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s15, LLDB_INVALID_REGNUM, gdb_arm_s15, fpu_s15 }, NULL, NULL}, |
| { "s16", NULL, 4, FPU_OFFSET(16), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s16, LLDB_INVALID_REGNUM, gdb_arm_s16, fpu_s16 }, NULL, NULL}, |
| { "s17", NULL, 4, FPU_OFFSET(17), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s17, LLDB_INVALID_REGNUM, gdb_arm_s17, fpu_s17 }, NULL, NULL}, |
| { "s18", NULL, 4, FPU_OFFSET(18), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s18, LLDB_INVALID_REGNUM, gdb_arm_s18, fpu_s18 }, NULL, NULL}, |
| { "s19", NULL, 4, FPU_OFFSET(19), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s19, LLDB_INVALID_REGNUM, gdb_arm_s19, fpu_s19 }, NULL, NULL}, |
| { "s20", NULL, 4, FPU_OFFSET(20), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s20, LLDB_INVALID_REGNUM, gdb_arm_s20, fpu_s20 }, NULL, NULL}, |
| { "s21", NULL, 4, FPU_OFFSET(21), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s21, LLDB_INVALID_REGNUM, gdb_arm_s21, fpu_s21 }, NULL, NULL}, |
| { "s22", NULL, 4, FPU_OFFSET(22), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s22, LLDB_INVALID_REGNUM, gdb_arm_s22, fpu_s22 }, NULL, NULL}, |
| { "s23", NULL, 4, FPU_OFFSET(23), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s23, LLDB_INVALID_REGNUM, gdb_arm_s23, fpu_s23 }, NULL, NULL}, |
| { "s24", NULL, 4, FPU_OFFSET(24), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s24, LLDB_INVALID_REGNUM, gdb_arm_s24, fpu_s24 }, NULL, NULL}, |
| { "s25", NULL, 4, FPU_OFFSET(25), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s25, LLDB_INVALID_REGNUM, gdb_arm_s25, fpu_s25 }, NULL, NULL}, |
| { "s26", NULL, 4, FPU_OFFSET(26), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s26, LLDB_INVALID_REGNUM, gdb_arm_s26, fpu_s26 }, NULL, NULL}, |
| { "s27", NULL, 4, FPU_OFFSET(27), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s27, LLDB_INVALID_REGNUM, gdb_arm_s27, fpu_s27 }, NULL, NULL}, |
| { "s28", NULL, 4, FPU_OFFSET(28), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s28, LLDB_INVALID_REGNUM, gdb_arm_s28, fpu_s28 }, NULL, NULL}, |
| { "s29", NULL, 4, FPU_OFFSET(29), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s29, LLDB_INVALID_REGNUM, gdb_arm_s29, fpu_s29 }, NULL, NULL}, |
| { "s30", NULL, 4, FPU_OFFSET(30), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s30, LLDB_INVALID_REGNUM, gdb_arm_s30, fpu_s30 }, NULL, NULL}, |
| { "s31", NULL, 4, FPU_OFFSET(31), eEncodingIEEE754,eFormatFloat, { LLDB_INVALID_REGNUM, dwarf_s31, LLDB_INVALID_REGNUM, gdb_arm_s31, fpu_s31 }, NULL, NULL}, |
| { "fpscr", NULL, 4, FPU_OFFSET(32), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, gdb_arm_fpscr, fpu_fpscr }, NULL, NULL}, |
| |
| { "exception",NULL, 4, EXC_OFFSET(0), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, exc_exception }, NULL, NULL}, |
| { "fsr", NULL, 4, EXC_OFFSET(1), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, exc_fsr }, NULL, NULL}, |
| { "far", NULL, 4, EXC_OFFSET(2), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, exc_far }, NULL, NULL}, |
| |
| { DEFINE_DBG (bvr, 0) }, |
| { DEFINE_DBG (bvr, 1) }, |
| { DEFINE_DBG (bvr, 2) }, |
| { DEFINE_DBG (bvr, 3) }, |
| { DEFINE_DBG (bvr, 4) }, |
| { DEFINE_DBG (bvr, 5) }, |
| { DEFINE_DBG (bvr, 6) }, |
| { DEFINE_DBG (bvr, 7) }, |
| { DEFINE_DBG (bvr, 8) }, |
| { DEFINE_DBG (bvr, 9) }, |
| { DEFINE_DBG (bvr, 10) }, |
| { DEFINE_DBG (bvr, 11) }, |
| { DEFINE_DBG (bvr, 12) }, |
| { DEFINE_DBG (bvr, 13) }, |
| { DEFINE_DBG (bvr, 14) }, |
| { DEFINE_DBG (bvr, 15) }, |
| |
| { DEFINE_DBG (bcr, 0) }, |
| { DEFINE_DBG (bcr, 1) }, |
| { DEFINE_DBG (bcr, 2) }, |
| { DEFINE_DBG (bcr, 3) }, |
| { DEFINE_DBG (bcr, 4) }, |
| { DEFINE_DBG (bcr, 5) }, |
| { DEFINE_DBG (bcr, 6) }, |
| { DEFINE_DBG (bcr, 7) }, |
| { DEFINE_DBG (bcr, 8) }, |
| { DEFINE_DBG (bcr, 9) }, |
| { DEFINE_DBG (bcr, 10) }, |
| { DEFINE_DBG (bcr, 11) }, |
| { DEFINE_DBG (bcr, 12) }, |
| { DEFINE_DBG (bcr, 13) }, |
| { DEFINE_DBG (bcr, 14) }, |
| { DEFINE_DBG (bcr, 15) }, |
| |
| { DEFINE_DBG (wvr, 0) }, |
| { DEFINE_DBG (wvr, 1) }, |
| { DEFINE_DBG (wvr, 2) }, |
| { DEFINE_DBG (wvr, 3) }, |
| { DEFINE_DBG (wvr, 4) }, |
| { DEFINE_DBG (wvr, 5) }, |
| { DEFINE_DBG (wvr, 6) }, |
| { DEFINE_DBG (wvr, 7) }, |
| { DEFINE_DBG (wvr, 8) }, |
| { DEFINE_DBG (wvr, 9) }, |
| { DEFINE_DBG (wvr, 10) }, |
| { DEFINE_DBG (wvr, 11) }, |
| { DEFINE_DBG (wvr, 12) }, |
| { DEFINE_DBG (wvr, 13) }, |
| { DEFINE_DBG (wvr, 14) }, |
| { DEFINE_DBG (wvr, 15) }, |
| |
| { DEFINE_DBG (wcr, 0) }, |
| { DEFINE_DBG (wcr, 1) }, |
| { DEFINE_DBG (wcr, 2) }, |
| { DEFINE_DBG (wcr, 3) }, |
| { DEFINE_DBG (wcr, 4) }, |
| { DEFINE_DBG (wcr, 5) }, |
| { DEFINE_DBG (wcr, 6) }, |
| { DEFINE_DBG (wcr, 7) }, |
| { DEFINE_DBG (wcr, 8) }, |
| { DEFINE_DBG (wcr, 9) }, |
| { DEFINE_DBG (wcr, 10) }, |
| { DEFINE_DBG (wcr, 11) }, |
| { DEFINE_DBG (wcr, 12) }, |
| { DEFINE_DBG (wcr, 13) }, |
| { DEFINE_DBG (wcr, 14) }, |
| { DEFINE_DBG (wcr, 15) } |
| }; |
| |
| // General purpose registers |
| static uint32_t |
| g_gpr_regnums[] = |
| { |
| gpr_r0, |
| gpr_r1, |
| gpr_r2, |
| gpr_r3, |
| gpr_r4, |
| gpr_r5, |
| gpr_r6, |
| gpr_r7, |
| gpr_r8, |
| gpr_r9, |
| gpr_r10, |
| gpr_r11, |
| gpr_r12, |
| gpr_sp, |
| gpr_lr, |
| gpr_pc, |
| gpr_cpsr |
| }; |
| |
| // Floating point registers |
| static uint32_t |
| g_fpu_regnums[] = |
| { |
| fpu_s0, |
| fpu_s1, |
| fpu_s2, |
| fpu_s3, |
| fpu_s4, |
| fpu_s5, |
| fpu_s6, |
| fpu_s7, |
| fpu_s8, |
| fpu_s9, |
| fpu_s10, |
| fpu_s11, |
| fpu_s12, |
| fpu_s13, |
| fpu_s14, |
| fpu_s15, |
| fpu_s16, |
| fpu_s17, |
| fpu_s18, |
| fpu_s19, |
| fpu_s20, |
| fpu_s21, |
| fpu_s22, |
| fpu_s23, |
| fpu_s24, |
| fpu_s25, |
| fpu_s26, |
| fpu_s27, |
| fpu_s28, |
| fpu_s29, |
| fpu_s30, |
| fpu_s31, |
| fpu_fpscr, |
| }; |
| |
| // Exception registers |
| |
| static uint32_t |
| g_exc_regnums[] = |
| { |
| exc_exception, |
| exc_fsr, |
| exc_far, |
| }; |
| |
| static size_t k_num_register_infos = llvm::array_lengthof(g_register_infos); |
| |
| void |
| RegisterContextDarwin_arm::InvalidateAllRegisters () |
| { |
| InvalidateAllRegisterStates(); |
| } |
| |
| |
| size_t |
| RegisterContextDarwin_arm::GetRegisterCount () |
| { |
| assert(k_num_register_infos == k_num_registers); |
| return k_num_registers; |
| } |
| |
| const RegisterInfo * |
| RegisterContextDarwin_arm::GetRegisterInfoAtIndex (size_t reg) |
| { |
| assert(k_num_register_infos == k_num_registers); |
| if (reg < k_num_registers) |
| return &g_register_infos[reg]; |
| return NULL; |
| } |
| |
| size_t |
| RegisterContextDarwin_arm::GetRegisterInfosCount () |
| { |
| return k_num_register_infos; |
| } |
| |
| const RegisterInfo * |
| RegisterContextDarwin_arm::GetRegisterInfos () |
| { |
| return g_register_infos; |
| } |
| |
| |
| // Number of registers in each register set |
| const size_t k_num_gpr_registers = llvm::array_lengthof(g_gpr_regnums); |
| const size_t k_num_fpu_registers = llvm::array_lengthof(g_fpu_regnums); |
| const size_t k_num_exc_registers = llvm::array_lengthof(g_exc_regnums); |
| |
| //---------------------------------------------------------------------- |
| // Register set definitions. The first definitions at register set index |
| // of zero is for all registers, followed by other registers sets. The |
| // register information for the all register set need not be filled in. |
| //---------------------------------------------------------------------- |
| static const RegisterSet g_reg_sets[] = |
| { |
| { "General Purpose Registers", "gpr", k_num_gpr_registers, g_gpr_regnums, }, |
| { "Floating Point Registers", "fpu", k_num_fpu_registers, g_fpu_regnums }, |
| { "Exception State Registers", "exc", k_num_exc_registers, g_exc_regnums } |
| }; |
| |
| const size_t k_num_regsets = llvm::array_lengthof(g_reg_sets); |
| |
| |
| size_t |
| RegisterContextDarwin_arm::GetRegisterSetCount () |
| { |
| return k_num_regsets; |
| } |
| |
| const RegisterSet * |
| RegisterContextDarwin_arm::GetRegisterSet (size_t reg_set) |
| { |
| if (reg_set < k_num_regsets) |
| return &g_reg_sets[reg_set]; |
| return NULL; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Register information definitions for 32 bit i386. |
| //---------------------------------------------------------------------- |
| int |
| RegisterContextDarwin_arm::GetSetForNativeRegNum (int reg) |
| { |
| if (reg < fpu_s0) |
| return GPRRegSet; |
| else if (reg < exc_exception) |
| return FPURegSet; |
| else if (reg < k_num_registers) |
| return EXCRegSet; |
| return -1; |
| } |
| |
| int |
| RegisterContextDarwin_arm::ReadGPR (bool force) |
| { |
| int set = GPRRegSet; |
| if (force || !RegisterSetIsCached(set)) |
| { |
| SetError(set, Read, DoReadGPR(GetThreadID(), set, gpr)); |
| } |
| return GetError(GPRRegSet, Read); |
| } |
| |
| int |
| RegisterContextDarwin_arm::ReadFPU (bool force) |
| { |
| int set = FPURegSet; |
| if (force || !RegisterSetIsCached(set)) |
| { |
| SetError(set, Read, DoReadFPU(GetThreadID(), set, fpu)); |
| } |
| return GetError(FPURegSet, Read); |
| } |
| |
| int |
| RegisterContextDarwin_arm::ReadEXC (bool force) |
| { |
| int set = EXCRegSet; |
| if (force || !RegisterSetIsCached(set)) |
| { |
| SetError(set, Read, DoReadEXC(GetThreadID(), set, exc)); |
| } |
| return GetError(EXCRegSet, Read); |
| } |
| |
| int |
| RegisterContextDarwin_arm::ReadDBG (bool force) |
| { |
| int set = DBGRegSet; |
| if (force || !RegisterSetIsCached(set)) |
| { |
| SetError(set, Read, DoReadDBG(GetThreadID(), set, dbg)); |
| } |
| return GetError(DBGRegSet, Read); |
| } |
| |
| int |
| RegisterContextDarwin_arm::WriteGPR () |
| { |
| int set = GPRRegSet; |
| if (!RegisterSetIsCached(set)) |
| { |
| SetError (set, Write, -1); |
| return KERN_INVALID_ARGUMENT; |
| } |
| SetError (set, Write, DoWriteGPR(GetThreadID(), set, gpr)); |
| SetError (set, Read, -1); |
| return GetError(GPRRegSet, Write); |
| } |
| |
| int |
| RegisterContextDarwin_arm::WriteFPU () |
| { |
| int set = FPURegSet; |
| if (!RegisterSetIsCached(set)) |
| { |
| SetError (set, Write, -1); |
| return KERN_INVALID_ARGUMENT; |
| } |
| SetError (set, Write, DoWriteFPU(GetThreadID(), set, fpu)); |
| SetError (set, Read, -1); |
| return GetError(FPURegSet, Write); |
| } |
| |
| int |
| RegisterContextDarwin_arm::WriteEXC () |
| { |
| int set = EXCRegSet; |
| if (!RegisterSetIsCached(set)) |
| { |
| SetError (set, Write, -1); |
| return KERN_INVALID_ARGUMENT; |
| } |
| SetError (set, Write, DoWriteEXC(GetThreadID(), set, exc)); |
| SetError (set, Read, -1); |
| return GetError(EXCRegSet, Write); |
| } |
| |
| int |
| RegisterContextDarwin_arm::WriteDBG () |
| { |
| int set = DBGRegSet; |
| if (!RegisterSetIsCached(set)) |
| { |
| SetError (set, Write, -1); |
| return KERN_INVALID_ARGUMENT; |
| } |
| SetError (set, Write, DoWriteDBG(GetThreadID(), set, dbg)); |
| SetError (set, Read, -1); |
| return GetError(DBGRegSet, Write); |
| } |
| |
| |
| int |
| RegisterContextDarwin_arm::ReadRegisterSet (uint32_t set, bool force) |
| { |
| switch (set) |
| { |
| case GPRRegSet: return ReadGPR(force); |
| case FPURegSet: return ReadFPU(force); |
| case EXCRegSet: return ReadEXC(force); |
| case DBGRegSet: return ReadDBG(force); |
| default: break; |
| } |
| return KERN_INVALID_ARGUMENT; |
| } |
| |
| int |
| RegisterContextDarwin_arm::WriteRegisterSet (uint32_t set) |
| { |
| // Make sure we have a valid context to set. |
| if (RegisterSetIsCached(set)) |
| { |
| switch (set) |
| { |
| case GPRRegSet: return WriteGPR(); |
| case FPURegSet: return WriteFPU(); |
| case EXCRegSet: return WriteEXC(); |
| case DBGRegSet: return WriteDBG(); |
| default: break; |
| } |
| } |
| return KERN_INVALID_ARGUMENT; |
| } |
| |
| void |
| RegisterContextDarwin_arm::LogDBGRegisters (Log *log, const DBG& dbg) |
| { |
| if (log) |
| { |
| for (uint32_t i=0; i<16; i++) |
| log->Printf("BVR%-2u/BCR%-2u = { 0x%8.8x, 0x%8.8x } WVR%-2u/WCR%-2u = { 0x%8.8x, 0x%8.8x }", |
| i, i, dbg.bvr[i], dbg.bcr[i], |
| i, i, dbg.wvr[i], dbg.wcr[i]); |
| } |
| } |
| |
| |
| bool |
| RegisterContextDarwin_arm::ReadRegister (const RegisterInfo *reg_info, RegisterValue &value) |
| { |
| const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; |
| int set = RegisterContextDarwin_arm::GetSetForNativeRegNum (reg); |
| |
| if (set == -1) |
| return false; |
| |
| if (ReadRegisterSet(set, false) != KERN_SUCCESS) |
| return false; |
| |
| switch (reg) |
| { |
| case gpr_r0: |
| case gpr_r1: |
| case gpr_r2: |
| case gpr_r3: |
| case gpr_r4: |
| case gpr_r5: |
| case gpr_r6: |
| case gpr_r7: |
| case gpr_r8: |
| case gpr_r9: |
| case gpr_r10: |
| case gpr_r11: |
| case gpr_r12: |
| case gpr_sp: |
| case gpr_lr: |
| case gpr_pc: |
| case gpr_cpsr: |
| value.SetUInt32 (gpr.r[reg - gpr_r0]); |
| break; |
| |
| case fpu_s0: |
| case fpu_s1: |
| case fpu_s2: |
| case fpu_s3: |
| case fpu_s4: |
| case fpu_s5: |
| case fpu_s6: |
| case fpu_s7: |
| case fpu_s8: |
| case fpu_s9: |
| case fpu_s10: |
| case fpu_s11: |
| case fpu_s12: |
| case fpu_s13: |
| case fpu_s14: |
| case fpu_s15: |
| case fpu_s16: |
| case fpu_s17: |
| case fpu_s18: |
| case fpu_s19: |
| case fpu_s20: |
| case fpu_s21: |
| case fpu_s22: |
| case fpu_s23: |
| case fpu_s24: |
| case fpu_s25: |
| case fpu_s26: |
| case fpu_s27: |
| case fpu_s28: |
| case fpu_s29: |
| case fpu_s30: |
| case fpu_s31: |
| value.SetUInt32 (fpu.floats.s[reg], RegisterValue::eTypeFloat); |
| break; |
| |
| case fpu_fpscr: |
| value.SetUInt32 (fpu.fpscr); |
| break; |
| |
| case exc_exception: |
| value.SetUInt32 (exc.exception); |
| break; |
| case exc_fsr: |
| value.SetUInt32 (exc.fsr); |
| break; |
| case exc_far: |
| value.SetUInt32 (exc.far); |
| break; |
| |
| default: |
| value.SetValueToInvalid(); |
| return false; |
| |
| } |
| return true; |
| } |
| |
| |
| bool |
| RegisterContextDarwin_arm::WriteRegister (const RegisterInfo *reg_info, |
| const RegisterValue &value) |
| { |
| const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; |
| int set = GetSetForNativeRegNum (reg); |
| |
| if (set == -1) |
| return false; |
| |
| if (ReadRegisterSet(set, false) != KERN_SUCCESS) |
| return false; |
| |
| switch (reg) |
| { |
| case gpr_r0: |
| case gpr_r1: |
| case gpr_r2: |
| case gpr_r3: |
| case gpr_r4: |
| case gpr_r5: |
| case gpr_r6: |
| case gpr_r7: |
| case gpr_r8: |
| case gpr_r9: |
| case gpr_r10: |
| case gpr_r11: |
| case gpr_r12: |
| case gpr_sp: |
| case gpr_lr: |
| case gpr_pc: |
| case gpr_cpsr: |
| gpr.r[reg - gpr_r0] = value.GetAsUInt32(); |
| break; |
| |
| case fpu_s0: |
| case fpu_s1: |
| case fpu_s2: |
| case fpu_s3: |
| case fpu_s4: |
| case fpu_s5: |
| case fpu_s6: |
| case fpu_s7: |
| case fpu_s8: |
| case fpu_s9: |
| case fpu_s10: |
| case fpu_s11: |
| case fpu_s12: |
| case fpu_s13: |
| case fpu_s14: |
| case fpu_s15: |
| case fpu_s16: |
| case fpu_s17: |
| case fpu_s18: |
| case fpu_s19: |
| case fpu_s20: |
| case fpu_s21: |
| case fpu_s22: |
| case fpu_s23: |
| case fpu_s24: |
| case fpu_s25: |
| case fpu_s26: |
| case fpu_s27: |
| case fpu_s28: |
| case fpu_s29: |
| case fpu_s30: |
| case fpu_s31: |
| fpu.floats.s[reg] = value.GetAsUInt32(); |
| break; |
| |
| case fpu_fpscr: |
| fpu.fpscr = value.GetAsUInt32(); |
| break; |
| |
| case exc_exception: |
| exc.exception = value.GetAsUInt32(); |
| break; |
| case exc_fsr: |
| exc.fsr = value.GetAsUInt32(); |
| break; |
| case exc_far: |
| exc.far = value.GetAsUInt32(); |
| break; |
| |
| default: |
| return false; |
| |
| } |
| return WriteRegisterSet(set) == KERN_SUCCESS; |
| } |
| |
| bool |
| RegisterContextDarwin_arm::ReadAllRegisterValues (lldb::DataBufferSP &data_sp) |
| { |
| data_sp.reset (new DataBufferHeap (REG_CONTEXT_SIZE, 0)); |
| if (data_sp && |
| ReadGPR (false) == KERN_SUCCESS && |
| ReadFPU (false) == KERN_SUCCESS && |
| ReadEXC (false) == KERN_SUCCESS) |
| { |
| uint8_t *dst = data_sp->GetBytes(); |
| ::memcpy (dst, &gpr, sizeof(gpr)); |
| dst += sizeof(gpr); |
| |
| ::memcpy (dst, &fpu, sizeof(fpu)); |
| dst += sizeof(gpr); |
| |
| ::memcpy (dst, &exc, sizeof(exc)); |
| return true; |
| } |
| return false; |
| } |
| |
| bool |
| RegisterContextDarwin_arm::WriteAllRegisterValues (const lldb::DataBufferSP &data_sp) |
| { |
| if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE) |
| { |
| const uint8_t *src = data_sp->GetBytes(); |
| ::memcpy (&gpr, src, sizeof(gpr)); |
| src += sizeof(gpr); |
| |
| ::memcpy (&fpu, src, sizeof(fpu)); |
| src += sizeof(gpr); |
| |
| ::memcpy (&exc, src, sizeof(exc)); |
| uint32_t success_count = 0; |
| if (WriteGPR() == KERN_SUCCESS) |
| ++success_count; |
| if (WriteFPU() == KERN_SUCCESS) |
| ++success_count; |
| if (WriteEXC() == KERN_SUCCESS) |
| ++success_count; |
| return success_count == 3; |
| } |
| return false; |
| } |
| |
| uint32_t |
| RegisterContextDarwin_arm::ConvertRegisterKindToRegisterNumber (lldb::RegisterKind kind, uint32_t reg) |
| { |
| if (kind == eRegisterKindGeneric) |
| { |
| switch (reg) |
| { |
| case LLDB_REGNUM_GENERIC_PC: return gpr_pc; |
| case LLDB_REGNUM_GENERIC_SP: return gpr_sp; |
| case LLDB_REGNUM_GENERIC_FP: return gpr_r7; |
| case LLDB_REGNUM_GENERIC_RA: return gpr_lr; |
| case LLDB_REGNUM_GENERIC_FLAGS: return gpr_cpsr; |
| default: |
| break; |
| } |
| } |
| else if (kind == eRegisterKindDWARF) |
| { |
| switch (reg) |
| { |
| case dwarf_r0: return gpr_r0; |
| case dwarf_r1: return gpr_r1; |
| case dwarf_r2: return gpr_r2; |
| case dwarf_r3: return gpr_r3; |
| case dwarf_r4: return gpr_r4; |
| case dwarf_r5: return gpr_r5; |
| case dwarf_r6: return gpr_r6; |
| case dwarf_r7: return gpr_r7; |
| case dwarf_r8: return gpr_r8; |
| case dwarf_r9: return gpr_r9; |
| case dwarf_r10: return gpr_r10; |
| case dwarf_r11: return gpr_r11; |
| case dwarf_r12: return gpr_r12; |
| case dwarf_sp: return gpr_sp; |
| case dwarf_lr: return gpr_lr; |
| case dwarf_pc: return gpr_pc; |
| case dwarf_spsr: return gpr_cpsr; |
| |
| case dwarf_s0: return fpu_s0; |
| case dwarf_s1: return fpu_s1; |
| case dwarf_s2: return fpu_s2; |
| case dwarf_s3: return fpu_s3; |
| case dwarf_s4: return fpu_s4; |
| case dwarf_s5: return fpu_s5; |
| case dwarf_s6: return fpu_s6; |
| case dwarf_s7: return fpu_s7; |
| case dwarf_s8: return fpu_s8; |
| case dwarf_s9: return fpu_s9; |
| case dwarf_s10: return fpu_s10; |
| case dwarf_s11: return fpu_s11; |
| case dwarf_s12: return fpu_s12; |
| case dwarf_s13: return fpu_s13; |
| case dwarf_s14: return fpu_s14; |
| case dwarf_s15: return fpu_s15; |
| case dwarf_s16: return fpu_s16; |
| case dwarf_s17: return fpu_s17; |
| case dwarf_s18: return fpu_s18; |
| case dwarf_s19: return fpu_s19; |
| case dwarf_s20: return fpu_s20; |
| case dwarf_s21: return fpu_s21; |
| case dwarf_s22: return fpu_s22; |
| case dwarf_s23: return fpu_s23; |
| case dwarf_s24: return fpu_s24; |
| case dwarf_s25: return fpu_s25; |
| case dwarf_s26: return fpu_s26; |
| case dwarf_s27: return fpu_s27; |
| case dwarf_s28: return fpu_s28; |
| case dwarf_s29: return fpu_s29; |
| case dwarf_s30: return fpu_s30; |
| case dwarf_s31: return fpu_s31; |
| |
| default: |
| break; |
| } |
| } |
| else if (kind == eRegisterKindGCC) |
| { |
| switch (reg) |
| { |
| case gcc_r0: return gpr_r0; |
| case gcc_r1: return gpr_r1; |
| case gcc_r2: return gpr_r2; |
| case gcc_r3: return gpr_r3; |
| case gcc_r4: return gpr_r4; |
| case gcc_r5: return gpr_r5; |
| case gcc_r6: return gpr_r6; |
| case gcc_r7: return gpr_r7; |
| case gcc_r8: return gpr_r8; |
| case gcc_r9: return gpr_r9; |
| case gcc_r10: return gpr_r10; |
| case gcc_r11: return gpr_r11; |
| case gcc_r12: return gpr_r12; |
| case gcc_sp: return gpr_sp; |
| case gcc_lr: return gpr_lr; |
| case gcc_pc: return gpr_pc; |
| case gcc_cpsr: return gpr_cpsr; |
| } |
| } |
| else if (kind == eRegisterKindLLDB) |
| { |
| return reg; |
| } |
| return LLDB_INVALID_REGNUM; |
| } |
| |
| |
| uint32_t |
| RegisterContextDarwin_arm::NumSupportedHardwareBreakpoints () |
| { |
| #if defined (__arm__) |
| // Set the init value to something that will let us know that we need to |
| // autodetect how many breakpoints are supported dynamically... |
| static uint32_t g_num_supported_hw_breakpoints = UINT32_MAX; |
| if (g_num_supported_hw_breakpoints == UINT32_MAX) |
| { |
| // Set this to zero in case we can't tell if there are any HW breakpoints |
| g_num_supported_hw_breakpoints = 0; |
| |
| uint32_t register_DBGDIDR; |
| |
| asm("mrc p14, 0, %0, c0, c0, 0" : "=r" (register_DBGDIDR)); |
| g_num_supported_hw_breakpoints = Bits32 (register_DBGDIDR, 27, 24); |
| // Zero is reserved for the BRP count, so don't increment it if it is zero |
| if (g_num_supported_hw_breakpoints > 0) |
| g_num_supported_hw_breakpoints++; |
| // if (log) log->Printf ("DBGDIDR=0x%8.8x (number BRP pairs = %u)", register_DBGDIDR, g_num_supported_hw_breakpoints); |
| |
| } |
| return g_num_supported_hw_breakpoints; |
| #else |
| // TODO: figure out remote case here! |
| return 6; |
| #endif |
| } |
| |
| uint32_t |
| RegisterContextDarwin_arm::SetHardwareBreakpoint (lldb::addr_t addr, size_t size) |
| { |
| // Make sure our address isn't bogus |
| if (addr & 1) |
| return LLDB_INVALID_INDEX32; |
| |
| int kret = ReadDBG (false); |
| |
| if (kret == KERN_SUCCESS) |
| { |
| const uint32_t num_hw_breakpoints = NumSupportedHardwareBreakpoints(); |
| uint32_t i; |
| for (i=0; i<num_hw_breakpoints; ++i) |
| { |
| if ((dbg.bcr[i] & BCR_ENABLE) == 0) |
| break; // We found an available hw breakpoint slot (in i) |
| } |
| |
| // See if we found an available hw breakpoint slot above |
| if (i < num_hw_breakpoints) |
| { |
| // Make sure bits 1:0 are clear in our address |
| dbg.bvr[i] = addr & ~((lldb::addr_t)3); |
| |
| if (size == 2 || addr & 2) |
| { |
| uint32_t byte_addr_select = (addr & 2) ? BAS_IMVA_2_3 : BAS_IMVA_0_1; |
| |
| // We have a thumb breakpoint |
| // We have an ARM breakpoint |
| dbg.bcr[i] = BCR_M_IMVA_MATCH | // Stop on address mismatch |
| byte_addr_select | // Set the correct byte address select so we only trigger on the correct opcode |
| S_USER | // Which modes should this breakpoint stop in? |
| BCR_ENABLE; // Enable this hardware breakpoint |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareBreakpoint( addr = %8.8p, size = %u ) - BVR%u/BCR%u = 0x%8.8x / 0x%8.8x (Thumb)", |
| // addr, |
| // size, |
| // i, |
| // i, |
| // dbg.bvr[i], |
| // dbg.bcr[i]); |
| } |
| else if (size == 4) |
| { |
| // We have an ARM breakpoint |
| dbg.bcr[i] = BCR_M_IMVA_MATCH | // Stop on address mismatch |
| BAS_IMVA_ALL | // Stop on any of the four bytes following the IMVA |
| S_USER | // Which modes should this breakpoint stop in? |
| BCR_ENABLE; // Enable this hardware breakpoint |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareBreakpoint( addr = %8.8p, size = %u ) - BVR%u/BCR%u = 0x%8.8x / 0x%8.8x (ARM)", |
| // addr, |
| // size, |
| // i, |
| // i, |
| // dbg.bvr[i], |
| // dbg.bcr[i]); |
| } |
| |
| kret = WriteDBG(); |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareBreakpoint() WriteDBG() => 0x%8.8x.", kret); |
| |
| if (kret == KERN_SUCCESS) |
| return i; |
| } |
| // else |
| // { |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareBreakpoint(addr = %8.8p, size = %u) => all hardware breakpoint resources are being used.", addr, size); |
| // } |
| } |
| |
| return LLDB_INVALID_INDEX32; |
| } |
| |
| bool |
| RegisterContextDarwin_arm::ClearHardwareBreakpoint (uint32_t hw_index) |
| { |
| int kret = ReadDBG (false); |
| |
| const uint32_t num_hw_points = NumSupportedHardwareBreakpoints(); |
| if (kret == KERN_SUCCESS) |
| { |
| if (hw_index < num_hw_points) |
| { |
| dbg.bcr[hw_index] = 0; |
| // if (log) log->Printf ("RegisterContextDarwin_arm::SetHardwareBreakpoint( %u ) - BVR%u = 0x%8.8x BCR%u = 0x%8.8x", |
| // hw_index, |
| // hw_index, |
| // dbg.bvr[hw_index], |
| // hw_index, |
| // dbg.bcr[hw_index]); |
| |
| kret = WriteDBG(); |
| |
| if (kret == KERN_SUCCESS) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| uint32_t |
| RegisterContextDarwin_arm::NumSupportedHardwareWatchpoints () |
| { |
| #if defined (__arm__) |
| // Set the init value to something that will let us know that we need to |
| // autodetect how many watchpoints are supported dynamically... |
| static uint32_t g_num_supported_hw_watchpoints = UINT32_MAX; |
| if (g_num_supported_hw_watchpoints == UINT32_MAX) |
| { |
| // Set this to zero in case we can't tell if there are any HW breakpoints |
| g_num_supported_hw_watchpoints = 0; |
| |
| uint32_t register_DBGDIDR; |
| asm("mrc p14, 0, %0, c0, c0, 0" : "=r" (register_DBGDIDR)); |
| g_num_supported_hw_watchpoints = Bits32 (register_DBGDIDR, 31, 28) + 1; |
| // if (log) log->Printf ("DBGDIDR=0x%8.8x (number WRP pairs = %u)", register_DBGDIDR, g_num_supported_hw_watchpoints); |
| } |
| return g_num_supported_hw_watchpoints; |
| #else |
| // TODO: figure out remote case here! |
| return 2; |
| #endif |
| } |
| |
| |
| uint32_t |
| RegisterContextDarwin_arm::SetHardwareWatchpoint (lldb::addr_t addr, size_t size, bool read, bool write) |
| { |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareWatchpoint(addr = %8.8p, size = %u, read = %u, write = %u)", addr, size, read, write); |
| |
| const uint32_t num_hw_watchpoints = NumSupportedHardwareWatchpoints(); |
| |
| // Can't watch zero bytes |
| if (size == 0) |
| return LLDB_INVALID_INDEX32; |
| |
| // We must watch for either read or write |
| if (read == false && write == false) |
| return LLDB_INVALID_INDEX32; |
| |
| // Can't watch more than 4 bytes per WVR/WCR pair |
| if (size > 4) |
| return LLDB_INVALID_INDEX32; |
| |
| // We can only watch up to four bytes that follow a 4 byte aligned address |
| // per watchpoint register pair. Since we have at most so we can only watch |
| // until the next 4 byte boundary and we need to make sure we can properly |
| // encode this. |
| uint32_t addr_word_offset = addr % 4; |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareWatchpoint() - addr_word_offset = 0x%8.8x", addr_word_offset); |
| |
| uint32_t byte_mask = ((1u << size) - 1u) << addr_word_offset; |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareWatchpoint() - byte_mask = 0x%8.8x", byte_mask); |
| if (byte_mask > 0xfu) |
| return LLDB_INVALID_INDEX32; |
| |
| // Read the debug state |
| int kret = ReadDBG (false); |
| |
| if (kret == KERN_SUCCESS) |
| { |
| // Check to make sure we have the needed hardware support |
| uint32_t i = 0; |
| |
| for (i=0; i<num_hw_watchpoints; ++i) |
| { |
| if ((dbg.wcr[i] & WCR_ENABLE) == 0) |
| break; // We found an available hw breakpoint slot (in i) |
| } |
| |
| // See if we found an available hw breakpoint slot above |
| if (i < num_hw_watchpoints) |
| { |
| // Make the byte_mask into a valid Byte Address Select mask |
| uint32_t byte_address_select = byte_mask << 5; |
| // Make sure bits 1:0 are clear in our address |
| dbg.wvr[i] = addr & ~((lldb::addr_t)3); |
| dbg.wcr[i] = byte_address_select | // Which bytes that follow the IMVA that we will watch |
| S_USER | // Stop only in user mode |
| (read ? WCR_LOAD : 0) | // Stop on read access? |
| (write ? WCR_STORE : 0) | // Stop on write access? |
| WCR_ENABLE; // Enable this watchpoint; |
| |
| kret = WriteDBG(); |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareWatchpoint() WriteDBG() => 0x%8.8x.", kret); |
| |
| if (kret == KERN_SUCCESS) |
| return i; |
| } |
| else |
| { |
| // if (log) log->Printf ("RegisterContextDarwin_arm::EnableHardwareWatchpoint(): All hardware resources (%u) are in use.", num_hw_watchpoints); |
| } |
| } |
| return LLDB_INVALID_INDEX32; |
| } |
| |
| bool |
| RegisterContextDarwin_arm::ClearHardwareWatchpoint (uint32_t hw_index) |
| { |
| int kret = ReadDBG (false); |
| |
| const uint32_t num_hw_points = NumSupportedHardwareWatchpoints(); |
| if (kret == KERN_SUCCESS) |
| { |
| if (hw_index < num_hw_points) |
| { |
| dbg.wcr[hw_index] = 0; |
| // if (log) log->Printf ("RegisterContextDarwin_arm::ClearHardwareWatchpoint( %u ) - WVR%u = 0x%8.8x WCR%u = 0x%8.8x", |
| // hw_index, |
| // hw_index, |
| // dbg.wvr[hw_index], |
| // hw_index, |
| // dbg.wcr[hw_index]); |
| |
| kret = WriteDBG(); |
| |
| if (kret == KERN_SUCCESS) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| #endif |
