| /* Low level interface to valgrind, for the remote server for GDB integrated |
| in valgrind. |
| Copyright (C) 2011 |
| Free Software Foundation, Inc. |
| |
| This file is part of VALGRIND. |
| It has been inspired from a file from gdbserver in gdb 6.6. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include "server.h" |
| #include "target.h" |
| #include "regdef.h" |
| #include "regcache.h" |
| |
| #include "pub_core_aspacemgr.h" |
| #include "pub_tool_machine.h" |
| #include "pub_core_threadstate.h" |
| #include "pub_core_transtab.h" |
| #include "pub_core_gdbserver.h" |
| |
| #include "valgrind_low.h" |
| |
| #include "libvex_guest_arm.h" |
| |
| struct reg regs[] = { |
| { "r0", 0, 32 }, |
| { "r1", 32, 32 }, |
| { "r2", 64, 32 }, |
| { "r3", 96, 32 }, |
| { "r4", 128, 32 }, |
| { "r5", 160, 32 }, |
| { "r6", 192, 32 }, |
| { "r7", 224, 32 }, |
| { "r8", 256, 32 }, |
| { "r9", 288, 32 }, |
| { "r10", 320, 32 }, |
| { "r11", 352, 32 }, |
| { "r12", 384, 32 }, |
| { "sp", 416, 32 }, |
| { "lr", 448, 32 }, |
| { "pc", 480, 32 }, |
| { "", 512, 0 }, // It seems these entries are needed |
| { "", 512, 0 }, // as previous versions of arm <-> gdb placed |
| { "", 512, 0 }, // some floating point registers here. So, cpsr |
| { "", 512, 0 }, // must be register 25. |
| { "", 512, 0 }, |
| { "", 512, 0 }, |
| { "", 512, 0 }, |
| { "", 512, 0 }, |
| { "", 512, 0 }, |
| { "cpsr", 512, 32 }, |
| { "d0", 544, 64 }, |
| { "d1", 608, 64 }, |
| { "d2", 672, 64 }, |
| { "d3", 736, 64 }, |
| { "d4", 800, 64 }, |
| { "d5", 864, 64 }, |
| { "d6", 928, 64 }, |
| { "d7", 992, 64 }, |
| { "d8", 1056, 64 }, |
| { "d9", 1120, 64 }, |
| { "d10", 1184, 64 }, |
| { "d11", 1248, 64 }, |
| { "d12", 1312, 64 }, |
| { "d13", 1376, 64 }, |
| { "d14", 1440, 64 }, |
| { "d15", 1504, 64 }, |
| { "d16", 1568, 64 }, |
| { "d17", 1632, 64 }, |
| { "d18", 1696, 64 }, |
| { "d19", 1760, 64 }, |
| { "d20", 1824, 64 }, |
| { "d21", 1888, 64 }, |
| { "d22", 1952, 64 }, |
| { "d23", 2016, 64 }, |
| { "d24", 2080, 64 }, |
| { "d25", 2144, 64 }, |
| { "d26", 2208, 64 }, |
| { "d27", 2272, 64 }, |
| { "d28", 2336, 64 }, |
| { "d29", 2400, 64 }, |
| { "d30", 2464, 64 }, |
| { "d31", 2528, 64 }, |
| { "fpscr", 2592, 32 } |
| }; |
| static const char *expedite_regs[] = { "r11", "sp", "pc", 0 }; |
| #define num_regs (sizeof (regs) / sizeof (regs[0])) |
| |
| static |
| CORE_ADDR get_pc (void) |
| { |
| unsigned long pc; |
| |
| collect_register_by_name ("pc", &pc); |
| |
| dlog(1, "stop pc is %p\n", (void *) pc); |
| return pc; |
| } |
| |
| static |
| void set_pc (CORE_ADDR newpc) |
| { |
| Bool mod; |
| supply_register_by_name ("pc", &newpc, &mod); |
| if (mod) |
| dlog(1, "set pc to %p\n", C2v (newpc)); |
| else |
| dlog(1, "set pc not changed %p\n", C2v (newpc)); |
| } |
| |
| /* store registers in the guest state (gdbserver_to_valgrind) |
| or fetch register from the guest state (valgrind_to_gdbserver). */ |
| static |
| void transfer_register (ThreadId tid, int abs_regno, void * buf, |
| transfer_direction dir, int size, Bool *mod) |
| { |
| ThreadState* tst = VG_(get_ThreadState)(tid); |
| int set = abs_regno / num_regs; |
| int regno = abs_regno % num_regs; |
| *mod = False; |
| |
| VexGuestARMState* arm = (VexGuestARMState*) get_arch (set, tst); |
| |
| switch (regno) { |
| // numbers here have to match the order of regs above |
| // Attention: gdb order does not match valgrind order. |
| case 0: VG_(transfer) (&arm->guest_R0, buf, dir, size, mod); break; |
| case 1: VG_(transfer) (&arm->guest_R1, buf, dir, size, mod); break; |
| case 2: VG_(transfer) (&arm->guest_R2, buf, dir, size, mod); break; |
| case 3: VG_(transfer) (&arm->guest_R3, buf, dir, size, mod); break; |
| case 4: VG_(transfer) (&arm->guest_R4, buf, dir, size, mod); break; |
| case 5: VG_(transfer) (&arm->guest_R5, buf, dir, size, mod); break; |
| case 6: VG_(transfer) (&arm->guest_R6, buf, dir, size, mod); break; |
| case 7: VG_(transfer) (&arm->guest_R7, buf, dir, size, mod); break; |
| case 8: VG_(transfer) (&arm->guest_R8, buf, dir, size, mod); break; |
| case 9: VG_(transfer) (&arm->guest_R9, buf, dir, size, mod); break; |
| case 10: VG_(transfer) (&arm->guest_R10, buf, dir, size, mod); break; |
| case 11: VG_(transfer) (&arm->guest_R11, buf, dir, size, mod); break; |
| case 12: VG_(transfer) (&arm->guest_R12, buf, dir, size, mod); break; |
| case 13: VG_(transfer) (&arm->guest_R13, buf, dir, size, mod); break; |
| case 14: VG_(transfer) (&arm->guest_R14, buf, dir, size, mod); break; |
| case 15: VG_(transfer) (&arm->guest_R15T, buf, dir, size, mod); break; |
| case 16: |
| case 17: |
| case 18: |
| case 19: |
| case 20: /* 9 "empty registers". See struct reg regs above. */ |
| case 21: |
| case 22: |
| case 23: |
| case 24: *mod = False; break; |
| case 25: { |
| UInt cpsr = LibVEX_GuestARM_get_cpsr (arm); |
| if (dir == valgrind_to_gdbserver) { |
| VG_(transfer) (&cpsr, buf, dir, size, mod); |
| } else { |
| # if 0 |
| UInt newcpsr; |
| VG_(transfer) (&newcpsr, buf, dir, size, mod); |
| *mod = newcpsr != cpsr; |
| // GDBTD ???? see FIXME in guest_arm_helpers.c |
| LibVEX_GuestARM_put_flags (newcpsr, arm); |
| # else |
| *mod = False; |
| # endif |
| } |
| break; |
| } |
| case 26: VG_(transfer) (&arm->guest_D0, buf, dir, size, mod); break; |
| case 27: VG_(transfer) (&arm->guest_D1, buf, dir, size, mod); break; |
| case 28: VG_(transfer) (&arm->guest_D2, buf, dir, size, mod); break; |
| case 29: VG_(transfer) (&arm->guest_D3, buf, dir, size, mod); break; |
| case 30: VG_(transfer) (&arm->guest_D4, buf, dir, size, mod); break; |
| case 31: VG_(transfer) (&arm->guest_D5, buf, dir, size, mod); break; |
| case 32: VG_(transfer) (&arm->guest_D6, buf, dir, size, mod); break; |
| case 33: VG_(transfer) (&arm->guest_D7, buf, dir, size, mod); break; |
| case 34: VG_(transfer) (&arm->guest_D8, buf, dir, size, mod); break; |
| case 35: VG_(transfer) (&arm->guest_D9, buf, dir, size, mod); break; |
| case 36: VG_(transfer) (&arm->guest_D10, buf, dir, size, mod); break; |
| case 37: VG_(transfer) (&arm->guest_D11, buf, dir, size, mod); break; |
| case 38: VG_(transfer) (&arm->guest_D12, buf, dir, size, mod); break; |
| case 39: VG_(transfer) (&arm->guest_D13, buf, dir, size, mod); break; |
| case 40: VG_(transfer) (&arm->guest_D14, buf, dir, size, mod); break; |
| case 41: VG_(transfer) (&arm->guest_D15, buf, dir, size, mod); break; |
| case 42: VG_(transfer) (&arm->guest_D16, buf, dir, size, mod); break; |
| case 43: VG_(transfer) (&arm->guest_D17, buf, dir, size, mod); break; |
| case 44: VG_(transfer) (&arm->guest_D18, buf, dir, size, mod); break; |
| case 45: VG_(transfer) (&arm->guest_D19, buf, dir, size, mod); break; |
| case 46: VG_(transfer) (&arm->guest_D20, buf, dir, size, mod); break; |
| case 47: VG_(transfer) (&arm->guest_D21, buf, dir, size, mod); break; |
| case 48: VG_(transfer) (&arm->guest_D22, buf, dir, size, mod); break; |
| case 49: VG_(transfer) (&arm->guest_D23, buf, dir, size, mod); break; |
| case 50: VG_(transfer) (&arm->guest_D24, buf, dir, size, mod); break; |
| case 51: VG_(transfer) (&arm->guest_D25, buf, dir, size, mod); break; |
| case 52: VG_(transfer) (&arm->guest_D26, buf, dir, size, mod); break; |
| case 53: VG_(transfer) (&arm->guest_D27, buf, dir, size, mod); break; |
| case 54: VG_(transfer) (&arm->guest_D28, buf, dir, size, mod); break; |
| case 55: VG_(transfer) (&arm->guest_D29, buf, dir, size, mod); break; |
| case 56: VG_(transfer) (&arm->guest_D30, buf, dir, size, mod); break; |
| case 57: VG_(transfer) (&arm->guest_D31, buf, dir, size, mod); break; |
| case 58: VG_(transfer) (&arm->guest_FPSCR, buf, dir, size, mod); break; |
| default: vg_assert(0); |
| } |
| } |
| |
| static struct valgrind_target_ops low_target = { |
| num_regs, |
| regs, |
| 13, //SP |
| transfer_register, |
| get_pc, |
| set_pc, |
| "arm", |
| "arm-with-vfpv3.xml", |
| "arm-with-vfpv3-valgrind.xml" |
| }; |
| |
| void arm_init_architecture (struct valgrind_target_ops *target) |
| { |
| *target = low_target; |
| set_register_cache (regs, num_regs); |
| gdbserver_expedite_regs = expedite_regs; |
| } |