309 lines
12 KiB
C
309 lines
12 KiB
C
/*
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* Debugger ARM64 specific functions
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*
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* Copyright 2010-2013 André Hentschel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "debugger.h"
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#if defined(__aarch64__) && !defined(__AARCH64EB__)
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static BOOL be_arm64_get_addr(HANDLE hThread, const CONTEXT* ctx,
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enum be_cpu_addr bca, ADDRESS64* addr)
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{
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switch (bca)
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{
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case be_cpu_addr_pc:
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return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Pc);
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case be_cpu_addr_stack:
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return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Sp);
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case be_cpu_addr_frame:
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return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Fp);
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break;
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}
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return FALSE;
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}
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static BOOL be_arm64_get_register_info(int regno, enum be_cpu_addr* kind)
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{
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switch (regno)
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{
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case CV_ARM64_PC: *kind = be_cpu_addr_pc; return TRUE;
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case CV_ARM64_SP: *kind = be_cpu_addr_stack; return TRUE;
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case CV_ARM64_FP: *kind = be_cpu_addr_frame; return TRUE;
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}
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return FALSE;
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}
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static void be_arm64_single_step(CONTEXT* ctx, BOOL enable)
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{
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dbg_printf("be_arm64_single_step: not done\n");
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}
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static void be_arm64_print_context(HANDLE hThread, const CONTEXT* ctx, int all_regs)
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{
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static const char condflags[] = "NZCV";
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int i;
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char buf[8];
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switch (ctx->PState & 0x0f)
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{
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case 0: strcpy(buf, "EL0t"); break;
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case 4: strcpy(buf, "EL1t"); break;
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case 5: strcpy(buf, "EL1t"); break;
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case 8: strcpy(buf, "EL2t"); break;
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case 9: strcpy(buf, "EL2t"); break;
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case 12: strcpy(buf, "EL3t"); break;
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case 13: strcpy(buf, "EL3t"); break;
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default: strcpy(buf, "UNKNWN"); break;
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}
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dbg_printf("Register dump:\n");
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dbg_printf("%s %s Mode\n", (ctx->PState & 0x10) ? "ARM" : "ARM64", buf);
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strcpy(buf, condflags);
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for (i = 0; buf[i]; i++)
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if (!((ctx->PState >> 26) & (1 << (sizeof(condflags) - i))))
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buf[i] = '-';
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dbg_printf(" Pc:%016lx Sp:%016lx Lr:%016lx Pstate:%016lx(%s)\n",
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ctx->Pc, ctx->Sp, ctx->Lr, ctx->PState, buf);
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dbg_printf(" x0: %016lx x1: %016lx x2: %016lx x3: %016lx x4: %016lx\n",
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ctx->X0, ctx->X1, ctx->X2, ctx->X3, ctx->X4);
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dbg_printf(" x5: %016lx x6: %016lx x7: %016lx x8: %016lx x9: %016lx\n",
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ctx->X5, ctx->X6, ctx->X7, ctx->X8, ctx->X9);
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dbg_printf(" x10:%016lx x11:%016lx x12:%016lx x13:%016lx x14:%016lx\n",
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ctx->X10, ctx->X11, ctx->X12, ctx->X13, ctx->X14);
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dbg_printf(" x15:%016lx ip0:%016lx ip1:%016lx x18:%016lx x19:%016lx\n",
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ctx->X15, ctx->X16, ctx->X17, ctx->X18, ctx->X19);
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dbg_printf(" x20:%016lx x21:%016lx x22:%016lx x23:%016lx x24:%016lx\n",
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ctx->X20, ctx->X21, ctx->X22, ctx->X23, ctx->X24);
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dbg_printf(" x25:%016lx x26:%016lx x27:%016lx x28:%016lx Fp:%016lx\n",
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ctx->X25, ctx->X26, ctx->X27, ctx->X28, ctx->Fp);
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if (all_regs) dbg_printf( "Floating point ARM64 dump not implemented\n" );
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}
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static void be_arm64_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
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{
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}
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static struct dbg_internal_var be_arm64_ctx[] =
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{
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{CV_ARM64_X0 + 0, "x0", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X0), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 1, "x1", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X1), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 2, "x2", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X2), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 3, "x3", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X3), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 4, "x4", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X4), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 5, "x5", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X5), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 6, "x6", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X6), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 7, "x7", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X7), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 8, "x8", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X8), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 9, "x9", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X9), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 10, "x10", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X10), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 11, "x11", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X11), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 12, "x12", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X12), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 13, "x13", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X13), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 14, "x14", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X14), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 15, "x15", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X15), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 16, "x16", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X16), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 17, "x17", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X17), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 18, "x18", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X18), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 19, "x19", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X19), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 20, "x20", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X20), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 21, "x21", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X21), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 22, "x22", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X22), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 23, "x23", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X23), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 24, "x24", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X24), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 25, "x25", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X25), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 26, "x26", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X26), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 27, "x27", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X27), dbg_itype_unsigned_long_int},
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{CV_ARM64_X0 + 28, "x28", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, X28), dbg_itype_unsigned_long_int},
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{CV_ARM64_FP, "fp", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Fp), dbg_itype_unsigned_long_int},
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{CV_ARM64_LR, "lr", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Lr), dbg_itype_unsigned_long_int},
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{CV_ARM64_SP, "sp", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Sp), dbg_itype_unsigned_long_int},
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{CV_ARM64_PC, "pc", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Pc), dbg_itype_unsigned_long_int},
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{CV_ARM64_PSTATE, "pstate", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, PState), dbg_itype_unsigned_long_int},
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{0, NULL, 0, dbg_itype_none}
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};
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static BOOL be_arm64_is_step_over_insn(const void* insn)
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{
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dbg_printf("be_arm64_is_step_over_insn: not done\n");
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return FALSE;
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}
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static BOOL be_arm64_is_function_return(const void* insn)
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{
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dbg_printf("be_arm64_is_function_return: not done\n");
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return FALSE;
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}
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static BOOL be_arm64_is_break_insn(const void* insn)
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{
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dbg_printf("be_arm64_is_break_insn: not done\n");
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return FALSE;
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}
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static BOOL be_arm64_is_func_call(const void* insn, ADDRESS64* callee)
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{
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return FALSE;
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}
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static BOOL be_arm64_is_jump(const void* insn, ADDRESS64* jumpee)
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{
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return FALSE;
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}
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static BOOL be_arm64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
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CONTEXT* ctx, enum be_xpoint_type type,
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void* addr, unsigned long* val, unsigned size)
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{
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SIZE_T sz;
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switch (type)
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{
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case be_xpoint_break:
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if (!size) return FALSE;
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if (!pio->read(hProcess, addr, val, 4, &sz) || sz != 4) return FALSE;
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default:
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dbg_printf("Unknown/unsupported bp type %c\n", type);
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return FALSE;
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}
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return TRUE;
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}
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static BOOL be_arm64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
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CONTEXT* ctx, enum be_xpoint_type type,
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void* addr, unsigned long val, unsigned size)
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{
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SIZE_T sz;
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switch (type)
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{
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case be_xpoint_break:
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if (!size) return FALSE;
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if (!pio->write(hProcess, addr, &val, 4, &sz) || sz == 4) return FALSE;
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break;
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default:
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dbg_printf("Unknown/unsupported bp type %c\n", type);
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return FALSE;
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}
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return TRUE;
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}
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static BOOL be_arm64_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
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{
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dbg_printf("be_arm64_is_watchpoint_set: not done\n");
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return FALSE;
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}
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static void be_arm64_clear_watchpoint(CONTEXT* ctx, unsigned idx)
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{
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dbg_printf("be_arm64_clear_watchpoint: not done\n");
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}
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static int be_arm64_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
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{
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if (way)
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{
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ctx->Pc -= 4;
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return -4;
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}
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ctx->Pc += 4;
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return 4;
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}
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static BOOL be_arm64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
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BOOL is_signed, LONGLONG* ret)
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{
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if (size != 1 && size != 2 && size != 4 && size != 8) return FALSE;
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memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
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/* FIXME: this assumes that debuggee and debugger use the same
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* integral representation
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*/
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if (!memory_read_value(lvalue, size, ret)) return FALSE;
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/* propagate sign information */
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if (is_signed && size < 8 && (*ret >> (size * 8 - 1)) != 0)
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{
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ULONGLONG neg = -1;
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*ret |= neg << (size * 8);
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}
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return TRUE;
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}
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static BOOL be_arm64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
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long double* ret)
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{
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char tmp[sizeof(long double)];
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/* FIXME: this assumes that debuggee and debugger use the same
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* representation for reals
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*/
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if (!memory_read_value(lvalue, size, tmp)) return FALSE;
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if (size == sizeof(float)) *ret = *(float*)tmp;
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else if (size == sizeof(double)) *ret = *(double*)tmp;
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else if (size == sizeof(long double)) *ret = *(long double*)tmp;
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else return FALSE;
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return TRUE;
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}
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static BOOL be_arm64_store_integer(const struct dbg_lvalue* lvalue, unsigned size,
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BOOL is_signed, LONGLONG val)
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{
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/* this is simple if we're on a little endian CPU */
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return memory_write_value(lvalue, size, &val);
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}
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void be_arm64_disasm_one_insn(ADDRESS64 *addr, int display)
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{
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dbg_printf("be_arm64_disasm_one_insn: not done\n");
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}
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struct backend_cpu be_arm64 =
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{
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IMAGE_FILE_MACHINE_ARM64,
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8,
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be_cpu_linearize,
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be_cpu_build_addr,
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be_arm64_get_addr,
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be_arm64_get_register_info,
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be_arm64_single_step,
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be_arm64_print_context,
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be_arm64_print_segment_info,
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be_arm64_ctx,
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be_arm64_is_step_over_insn,
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be_arm64_is_function_return,
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be_arm64_is_break_insn,
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be_arm64_is_func_call,
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be_arm64_is_jump,
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be_arm64_disasm_one_insn,
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be_arm64_insert_Xpoint,
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be_arm64_remove_Xpoint,
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be_arm64_is_watchpoint_set,
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be_arm64_clear_watchpoint,
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be_arm64_adjust_pc_for_break,
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be_arm64_fetch_integer,
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be_arm64_fetch_float,
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be_arm64_store_integer,
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};
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#endif
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