static Int ptrace_setregs(Int pid, VexGuestArchState* vex)
{
#if defined(VGP_x86_linux)
struct vki_user_regs_struct regs;
VG_(memset)(®s, 0, sizeof(regs));
regs.cs = vex->guest_CS;
regs.ss = vex->guest_SS;
regs.ds = vex->guest_DS;
regs.es = vex->guest_ES;
regs.fs = vex->guest_FS;
regs.gs = vex->guest_GS;
regs.eax = vex->guest_EAX;
regs.ebx = vex->guest_EBX;
regs.ecx = vex->guest_ECX;
regs.edx = vex->guest_EDX;
regs.esi = vex->guest_ESI;
regs.edi = vex->guest_EDI;
regs.ebp = vex->guest_EBP;
regs.esp = vex->guest_ESP;
regs.eflags = LibVEX_GuestX86_get_eflags(vex);
regs.eip = vex->guest_EIP;
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, ®s);
#elif defined(VGP_amd64_linux)
struct vki_user_regs_struct regs;
VG_(memset)(®s, 0, sizeof(regs));
regs.rax = vex->guest_RAX;
regs.rbx = vex->guest_RBX;
regs.rcx = vex->guest_RCX;
regs.rdx = vex->guest_RDX;
regs.rsi = vex->guest_RSI;
regs.rdi = vex->guest_RDI;
regs.rbp = vex->guest_RBP;
regs.rsp = vex->guest_RSP;
regs.r8 = vex->guest_R8;
regs.r9 = vex->guest_R9;
regs.r10 = vex->guest_R10;
regs.r11 = vex->guest_R11;
regs.r12 = vex->guest_R12;
regs.r13 = vex->guest_R13;
regs.r14 = vex->guest_R14;
regs.r15 = vex->guest_R15;
regs.eflags = LibVEX_GuestAMD64_get_rflags(vex);
regs.rip = vex->guest_RIP;
/* Set %{c,d,e,f,s,g}s and %{fs,gs}_base (whatever those are) to
values which don't fail the kernel's sanity checks. I have no
idea what these should really be set to. Anyway, mostly it
seems that zero is an allowable value, except for %cs and %ss
which have to have their lowest 2 bits be 11. See putreg() in
linux-2.6.23/arch/x86_64/kernel/ptrace.c for the apparently
relevant sanity checks. This fixes #145622. */
regs.cs = 3;
regs.ds = 0;
regs.es = 0;
regs.fs = 0;
regs.ss = 3;
regs.gs = 0;
regs.fs_base = 0;
regs.gs_base = 0;
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, ®s);
#elif defined(VGP_ppc32_linux)
Int rc = 0;
/* apparently the casting to void* is the Right Thing To Do */
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R0 * 4), (void*)vex->guest_GPR0);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R1 * 4), (void*)vex->guest_GPR1);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R2 * 4), (void*)vex->guest_GPR2);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R3 * 4), (void*)vex->guest_GPR3);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R4 * 4), (void*)vex->guest_GPR4);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R5 * 4), (void*)vex->guest_GPR5);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R6 * 4), (void*)vex->guest_GPR6);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R7 * 4), (void*)vex->guest_GPR7);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R8 * 4), (void*)vex->guest_GPR8);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R9 * 4), (void*)vex->guest_GPR9);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R10 * 4), (void*)vex->guest_GPR10);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R11 * 4), (void*)vex->guest_GPR11);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R12 * 4), (void*)vex->guest_GPR12);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R13 * 4), (void*)vex->guest_GPR13);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R14 * 4), (void*)vex->guest_GPR14);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R15 * 4), (void*)vex->guest_GPR15);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R16 * 4), (void*)vex->guest_GPR16);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R17 * 4), (void*)vex->guest_GPR17);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R18 * 4), (void*)vex->guest_GPR18);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R19 * 4), (void*)vex->guest_GPR19);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R20 * 4), (void*)vex->guest_GPR20);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R21 * 4), (void*)vex->guest_GPR21);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R22 * 4), (void*)vex->guest_GPR22);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R23 * 4), (void*)vex->guest_GPR23);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R24 * 4), (void*)vex->guest_GPR24);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R25 * 4), (void*)vex->guest_GPR25);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R26 * 4), (void*)vex->guest_GPR26);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R27 * 4), (void*)vex->guest_GPR27);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R28 * 4), (void*)vex->guest_GPR28);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R29 * 4), (void*)vex->guest_GPR29);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R30 * 4), (void*)vex->guest_GPR30);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R31 * 4), (void*)vex->guest_GPR31);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_NIP * 4), (void*)vex->guest_CIA);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CCR * 4),
(void*)LibVEX_GuestPPC32_get_CR(vex));
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_LNK * 4), (void*)vex->guest_LR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CTR * 4), (void*)vex->guest_CTR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_XER * 4),
(void*)LibVEX_GuestPPC32_get_XER(vex));
return rc;
#elif defined(VGP_ppc64_linux)
Int rc = 0;
/* FRJ: copied nearly verbatim from the ppc32 case. I compared the
vki-ppc64-linux.h with its ppc32 counterpart and saw no
appreciable differences, other than the registers being 8 bytes
instead of 4. No idea why we don't set all of the entries
declared in vki_pt_regs, but ppc32 doesn't so there must be a
reason.
Finally, note that CR and XER are 32 bits even for ppc64 (see
libvex_guest_ppc64.h), but the vki_pt_regs struct still gives
them 64 bits.
*/
/* apparently the casting to void* is the Right Thing To Do */
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R0 * 8), (void*)vex->guest_GPR0);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R1 * 8), (void*)vex->guest_GPR1);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R2 * 8), (void*)vex->guest_GPR2);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R3 * 8), (void*)vex->guest_GPR3);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R4 * 8), (void*)vex->guest_GPR4);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R5 * 8), (void*)vex->guest_GPR5);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R6 * 8), (void*)vex->guest_GPR6);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R7 * 8), (void*)vex->guest_GPR7);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R8 * 8), (void*)vex->guest_GPR8);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R9 * 8), (void*)vex->guest_GPR9);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R10 * 8), (void*)vex->guest_GPR10);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R11 * 8), (void*)vex->guest_GPR11);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R12 * 8), (void*)vex->guest_GPR12);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R13 * 8), (void*)vex->guest_GPR13);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R14 * 8), (void*)vex->guest_GPR14);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R15 * 8), (void*)vex->guest_GPR15);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R16 * 8), (void*)vex->guest_GPR16);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R17 * 8), (void*)vex->guest_GPR17);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R18 * 8), (void*)vex->guest_GPR18);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R19 * 8), (void*)vex->guest_GPR19);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R20 * 8), (void*)vex->guest_GPR20);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R21 * 8), (void*)vex->guest_GPR21);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R22 * 8), (void*)vex->guest_GPR22);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R23 * 8), (void*)vex->guest_GPR23);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R24 * 8), (void*)vex->guest_GPR24);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R25 * 8), (void*)vex->guest_GPR25);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R26 * 8), (void*)vex->guest_GPR26);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R27 * 8), (void*)vex->guest_GPR27);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R28 * 8), (void*)vex->guest_GPR28);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R29 * 8), (void*)vex->guest_GPR29);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R30 * 8), (void*)vex->guest_GPR30);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R31 * 8), (void*)vex->guest_GPR31);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_NIP * 8), (void*)vex->guest_CIA);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CCR * 8),
(void*)(long)LibVEX_GuestPPC64_get_CR(vex));
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_LNK * 8), (void*)vex->guest_LR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CTR * 8), (void*)vex->guest_CTR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_XER * 8),
(void*)(long)LibVEX_GuestPPC64_get_XER(vex));
return rc;
#elif defined(VGP_arm_linux)
struct vki_user_regs_struct uregs;
VG_(memset)(&uregs, 0, sizeof(uregs));
uregs.ARM_r0 = vex->guest_R0;
uregs.ARM_r1 = vex->guest_R1;
uregs.ARM_r2 = vex->guest_R2;
uregs.ARM_r3 = vex->guest_R3;
uregs.ARM_r4 = vex->guest_R4;
uregs.ARM_r5 = vex->guest_R5;
uregs.ARM_r6 = vex->guest_R6;
uregs.ARM_r7 = vex->guest_R7;
uregs.ARM_r8 = vex->guest_R8;
uregs.ARM_r9 = vex->guest_R9;
uregs.ARM_r10 = vex->guest_R10;
uregs.ARM_fp = vex->guest_R11;
uregs.ARM_ip = vex->guest_R12;
uregs.ARM_sp = vex->guest_R13;
uregs.ARM_lr = vex->guest_R14;
// Remove the T bit from the bottom of R15T. It will get shipped
// over in CPSR.T instead, since LibVEX_GuestARM_get_cpsr copies
// it from R15T[0].
uregs.ARM_pc = vex->guest_R15T & 0xFFFFFFFE;
uregs.ARM_cpsr = LibVEX_GuestARM_get_cpsr(vex);
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, &uregs);
#elif defined(VGP_arm64_linux)
I_die_here;
//ATC
struct vki_user_pt_regs uregs;
VG_(memset)(&uregs, 0, sizeof(uregs));
uregs.regs[0] = vex->guest_X0;
uregs.regs[1] = vex->guest_X1;
uregs.regs[2] = vex->guest_X2;
uregs.regs[3] = vex->guest_X3;
uregs.regs[4] = vex->guest_X4;
uregs.regs[5] = vex->guest_X5;
uregs.regs[6] = vex->guest_X6;
uregs.regs[7] = vex->guest_X7;
uregs.regs[8] = vex->guest_X8;
uregs.regs[9] = vex->guest_X9;
uregs.regs[10] = vex->guest_X10;
uregs.regs[11] = vex->guest_X11;
uregs.regs[12] = vex->guest_X12;
uregs.regs[13] = vex->guest_X13;
uregs.regs[14] = vex->guest_X14;
uregs.regs[15] = vex->guest_X15;
uregs.regs[16] = vex->guest_X16;
uregs.regs[17] = vex->guest_X17;
uregs.regs[18] = vex->guest_X18;
uregs.regs[19] = vex->guest_X19;
uregs.regs[20] = vex->guest_X20;
uregs.regs[21] = vex->guest_X21;
uregs.regs[22] = vex->guest_X22;
uregs.regs[23] = vex->guest_X23;
uregs.regs[24] = vex->guest_X24;
uregs.regs[25] = vex->guest_X25;
uregs.regs[26] = vex->guest_X26;
uregs.regs[27] = vex->guest_X27;
uregs.regs[28] = vex->guest_X28;
uregs.regs[29] = vex->guest_X29;
uregs.regs[30] = vex->guest_X30;
uregs.sp = vex->guest_XSP;
uregs.pc = vex->guest_PC;
uregs.pstate = LibVEX_GuestARM64_get_nzcv(vex); /* is this correct? */
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, &uregs);
#elif defined(VGP_x86_darwin)
I_die_here;
#elif defined(VGP_amd64_darwin)
I_die_here;
#elif defined(VGP_s390x_linux)
struct vki_user_regs_struct regs;
vki_ptrace_area pa;
/* We don't set the psw mask and start at offset 8 */
pa.vki_len = (unsigned long) ®s.per_info - (unsigned long) ®s.psw.addr;
pa.vki_process_addr = (unsigned long) ®s.psw.addr;
pa.vki_kernel_addr = 8;
VG_(memset)(®s, 0, sizeof(regs));
regs.psw.addr = vex->guest_IA;
/* We don't set the mask */
regs.gprs[0] = vex->guest_r0;
regs.gprs[1] = vex->guest_r1;
regs.gprs[2] = vex->guest_r2;
regs.gprs[3] = vex->guest_r3;
regs.gprs[4] = vex->guest_r4;
regs.gprs[5] = vex->guest_r5;
regs.gprs[6] = vex->guest_r6;
regs.gprs[7] = vex->guest_r7;
regs.gprs[8] = vex->guest_r8;
regs.gprs[9] = vex->guest_r9;
regs.gprs[10] = vex->guest_r10;
regs.gprs[11] = vex->guest_r11;
regs.gprs[12] = vex->guest_r12;
regs.gprs[13] = vex->guest_r13;
regs.gprs[14] = vex->guest_r14;
regs.gprs[15] = vex->guest_r15;
regs.acrs[0] = vex->guest_a0;
regs.acrs[1] = vex->guest_a1;
regs.acrs[2] = vex->guest_a2;
regs.acrs[3] = vex->guest_a3;
regs.acrs[4] = vex->guest_a4;
regs.acrs[5] = vex->guest_a5;
regs.acrs[6] = vex->guest_a6;
regs.acrs[7] = vex->guest_a7;
regs.acrs[8] = vex->guest_a8;
regs.acrs[9] = vex->guest_a9;
regs.acrs[10] = vex->guest_a10;
regs.acrs[11] = vex->guest_a11;
regs.acrs[12] = vex->guest_a12;
regs.acrs[13] = vex->guest_a13;
regs.acrs[14] = vex->guest_a14;
regs.acrs[15] = vex->guest_a15;
/* only used for system call restart and friends, just use r2 */
regs.orig_gpr2 = vex->guest_r2;
regs.fp_regs.fprs[0].ui = vex->guest_f0;
regs.fp_regs.fprs[1].ui = vex->guest_f1;
regs.fp_regs.fprs[2].ui = vex->guest_f2;
regs.fp_regs.fprs[3].ui = vex->guest_f3;
regs.fp_regs.fprs[4].ui = vex->guest_f4;
regs.fp_regs.fprs[5].ui = vex->guest_f5;
regs.fp_regs.fprs[6].ui = vex->guest_f6;
regs.fp_regs.fprs[7].ui = vex->guest_f7;
regs.fp_regs.fprs[8].ui = vex->guest_f8;
regs.fp_regs.fprs[9].ui = vex->guest_f9;
regs.fp_regs.fprs[10].ui = vex->guest_f10;
regs.fp_regs.fprs[11].ui = vex->guest_f11;
regs.fp_regs.fprs[12].ui = vex->guest_f12;
regs.fp_regs.fprs[13].ui = vex->guest_f13;
regs.fp_regs.fprs[14].ui = vex->guest_f14;
regs.fp_regs.fprs[15].ui = vex->guest_f15;
regs.fp_regs.fpc = vex->guest_fpc;
return VG_(ptrace)(VKI_PTRACE_POKEUSR_AREA, pid, &pa, NULL);
#elif defined(VGP_mips32_linux) || defined(VGP_mips64_linux)
struct vki_user_regs_struct regs;
VG_(memset)(®s, 0, sizeof(regs));
regs.MIPS_r0 = vex->guest_r0;
regs.MIPS_r1 = vex->guest_r1;
regs.MIPS_r2 = vex->guest_r2;
regs.MIPS_r3 = vex->guest_r3;
regs.MIPS_r4 = vex->guest_r4;
regs.MIPS_r5 = vex->guest_r5;
regs.MIPS_r6 = vex->guest_r6;
regs.MIPS_r7 = vex->guest_r7;
regs.MIPS_r8 = vex->guest_r8;
regs.MIPS_r9 = vex->guest_r9;
regs.MIPS_r10 = vex->guest_r10;
regs.MIPS_r11 = vex->guest_r11;
regs.MIPS_r12 = vex->guest_r12;
regs.MIPS_r13 = vex->guest_r13;
regs.MIPS_r14 = vex->guest_r14;
regs.MIPS_r15 = vex->guest_r15;
regs.MIPS_r16 = vex->guest_r16;
regs.MIPS_r17 = vex->guest_r17;
regs.MIPS_r18 = vex->guest_r18;
regs.MIPS_r19 = vex->guest_r19;
regs.MIPS_r20 = vex->guest_r20;
regs.MIPS_r21 = vex->guest_r21;
regs.MIPS_r22 = vex->guest_r22;
regs.MIPS_r23 = vex->guest_r23;
regs.MIPS_r24 = vex->guest_r24;
regs.MIPS_r25 = vex->guest_r25;
regs.MIPS_r26 = vex->guest_r26;
regs.MIPS_r27 = vex->guest_r27;
regs.MIPS_r28 = vex->guest_r28;
regs.MIPS_r29 = vex->guest_r29;
regs.MIPS_r30 = vex->guest_r30;
regs.MIPS_r31 = vex->guest_r31;
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, ®s);
#else
# error Unknown arch
#endif
}
/* EXPORTED */
void VG_(sigframe_create)( ThreadId tid,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *siguc,
void *handler,
UInt flags,
const vki_sigset_t *mask,
void *restorer )
{
struct vg_sig_private* priv;
Addr sp;
ThreadState* tst;
Int sigNo = siginfo->si_signo;
Addr faultaddr;
struct rt_sigframe* frame;
/* Stack must be 16-byte aligned */
vg_assert(VG_IS_16_ALIGNED(sizeof(struct vg_sig_private)));
vg_assert(VG_IS_16_ALIGNED(sizeof(struct rt_sigframe)));
sp_top_of_frame &= ~0xf;
sp = sp_top_of_frame - sizeof(struct rt_sigframe);
tst = VG_(get_ThreadState)(tid);
if (!extend(tst, sp, sp_top_of_frame - sp))
return;
vg_assert(VG_IS_16_ALIGNED(sp));
frame = (struct rt_sigframe *) sp;
/* clear it (conservatively) */
VG_(memset)(frame, 0, sizeof(*frame));
/////////
frame->pinfo = &frame->info;
frame->puc = &frame->uc;
frame->uc.uc_flags = 0;
frame->uc.uc_link = 0;
/////////
/* Set up the stack chain pointer */
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal handler frame",
sp, sizeof(UWord) );
*(Addr *)sp = tst->arch.vex.guest_GPR1;
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
sp, sizeof(UWord) );
faultaddr = (Addr)siginfo->_sifields._sigfault._addr;
if (sigNo == VKI_SIGILL && siginfo->si_code > 0)
faultaddr = tst->arch.vex.guest_CIA;
VG_(memcpy)(&frame->info, siginfo, sizeof(*siginfo));
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
(Addr)&frame->info, sizeof(frame->info) );
frame->uc.uc_flags = 0;
frame->uc.uc_link = 0;
frame->uc.uc_stack = tst->altstack;
frame->uc.uc_sigmask = tst->sig_mask;
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
(Addr)(&frame->uc), sizeof(frame->uc) );
# define DO(gpr) frame->uc.uc_mcontext.gp_regs[VKI_PT_R0+gpr] \
= tst->arch.vex.guest_GPR##gpr
DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23);
DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31);
# undef DO
frame->uc.uc_mcontext.gp_regs[VKI_PT_NIP] = tst->arch.vex.guest_CIA;
frame->uc.uc_mcontext.gp_regs[VKI_PT_MSR] = 0xf032; /* pretty arbitrary */
frame->uc.uc_mcontext.gp_regs[VKI_PT_ORIG_R3] = tst->arch.vex.guest_GPR3;
frame->uc.uc_mcontext.gp_regs[VKI_PT_CTR] = tst->arch.vex.guest_CTR;
frame->uc.uc_mcontext.gp_regs[VKI_PT_LNK] = tst->arch.vex.guest_LR;
frame->uc.uc_mcontext.gp_regs[VKI_PT_XER] = LibVEX_GuestPPC64_get_XER(
&tst->arch.vex);
frame->uc.uc_mcontext.gp_regs[VKI_PT_CCR] = LibVEX_GuestPPC64_get_CR(
&tst->arch.vex);
//mc->mc_gregs[VKI_PT_MQ] = 0;
//mc->mc_gregs[VKI_PT_TRAP] = 0;
//mc->mc_gregs[VKI_PT_DAR] = fault_addr;
//mc->mc_gregs[VKI_PT_DSISR] = 0;
//mc->mc_gregs[VKI_PT_RESULT] = 0;
/* XXX should do FP and vector regs */
/* set up signal return trampoline */
/* NB. 5 Sept 07. mc->mc_pad[0..1] used to contain a the code to
which the signal handler returns, and it just did sys_sigreturn
or sys_rt_sigreturn. But this doesn't work if the stack is
non-executable, and it isn't consistent with the x86-linux and
amd64-linux scheme for removing the stack frame. So instead be
consistent and use a stub in m_trampoline. Then it doesn't
matter whether or not the (guest) stack is executable. This
fixes #149519 and #145837. */
frame->tramp[0] = 0; /* invalid */
frame->tramp[1] = 0; /* invalid */
VG_TRACK(post_mem_write, Vg_CoreSignal, tst->tid,
(Addr)&frame->tramp, sizeof(frame->tramp));
/* invalidate any translation of this area */
VG_(discard_translations)( (Addr64)&frame->tramp[0],
sizeof(frame->tramp), "stack_mcontext" );
/* set the signal handler to return to the trampoline */
SET_SIGNAL_LR(tst, (Addr)&VG_(ppc64_linux_SUBST_FOR_rt_sigreturn));
/* Stack pointer for the handler .. (note, back chain set
earlier) */
SET_SIGNAL_GPR(tid, 1, sp);
/* Args for the handler .. */
SET_SIGNAL_GPR(tid, 3, sigNo);
SET_SIGNAL_GPR(tid, 4, (Addr) &frame->info);
SET_SIGNAL_GPR(tid, 5, (Addr) &frame->uc);
/* the kernel sets this, though it doesn't seem to be in the ABI */
SET_SIGNAL_GPR(tid, 6, (Addr) &frame->info);
/* Handler is in fact a standard ppc64-linux function descriptor,
so extract the function entry point and also the toc ptr to use. */
SET_SIGNAL_GPR(tid, 2, (Addr) ((ULong*)handler)[1]);
tst->arch.vex.guest_CIA = (Addr) ((ULong*)handler)[0];
priv = &frame->priv;
priv->magicPI = 0x31415927;
priv->sigNo_private = sigNo;
priv->vex_shadow1 = tst->arch.vex_shadow1;
priv->vex_shadow2 = tst->arch.vex_shadow2;
if (0)
VG_(printf)("pushed signal frame; %%R1 now = %#lx, "
"next %%CIA = %#llx, status=%d\n",
sp, tst->arch.vex.guest_CIA, tst->status);
}
static Int ptrace_setregs(Int pid, VexGuestArchState* vex)
{
#if defined(VGP_x86_linux)
struct vki_user_regs_struct regs;
VG_(memset)(®s, 0, sizeof(regs));
regs.cs = vex->guest_CS;
regs.ss = vex->guest_SS;
regs.ds = vex->guest_DS;
regs.es = vex->guest_ES;
regs.fs = vex->guest_FS;
regs.gs = vex->guest_GS;
regs.eax = vex->guest_EAX;
regs.ebx = vex->guest_EBX;
regs.ecx = vex->guest_ECX;
regs.edx = vex->guest_EDX;
regs.esi = vex->guest_ESI;
regs.edi = vex->guest_EDI;
regs.ebp = vex->guest_EBP;
regs.esp = vex->guest_ESP;
regs.eflags = LibVEX_GuestX86_get_eflags(vex);
regs.eip = vex->guest_EIP;
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, ®s);
#elif defined(VGP_amd64_linux)
struct vki_user_regs_struct regs;
VG_(memset)(®s, 0, sizeof(regs));
regs.rax = vex->guest_RAX;
regs.rbx = vex->guest_RBX;
regs.rcx = vex->guest_RCX;
regs.rdx = vex->guest_RDX;
regs.rsi = vex->guest_RSI;
regs.rdi = vex->guest_RDI;
regs.rbp = vex->guest_RBP;
regs.rsp = vex->guest_RSP;
regs.r8 = vex->guest_R8;
regs.r9 = vex->guest_R9;
regs.r10 = vex->guest_R10;
regs.r11 = vex->guest_R11;
regs.r12 = vex->guest_R12;
regs.r13 = vex->guest_R13;
regs.r14 = vex->guest_R14;
regs.r15 = vex->guest_R15;
regs.eflags = LibVEX_GuestAMD64_get_rflags(vex);
regs.rip = vex->guest_RIP;
/* Set %{c,d,e,f,s,g}s and %{fs,gs}_base (whatever those are) to
values which don't fail the kernel's sanity checks. I have no
idea what these should really be set to. Anyway, mostly it
seems that zero is an allowable value, except for %cs and %ss
which have to have their lowest 2 bits be 11. See putreg() in
linux-2.6.23/arch/x86_64/kernel/ptrace.c for the apparently
relevant sanity checks. This fixes #145622. */
regs.cs = 3;
regs.ds = 0;
regs.es = 0;
regs.fs = 0;
regs.ss = 3;
regs.gs = 0;
regs.fs_base = 0;
regs.gs_base = 0;
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, ®s);
#elif defined(VGP_ppc32_linux)
Int rc = 0;
/* apparently the casting to void* is the Right Thing To Do */
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R0 * 4), (void*)vex->guest_GPR0);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R1 * 4), (void*)vex->guest_GPR1);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R2 * 4), (void*)vex->guest_GPR2);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R3 * 4), (void*)vex->guest_GPR3);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R4 * 4), (void*)vex->guest_GPR4);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R5 * 4), (void*)vex->guest_GPR5);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R6 * 4), (void*)vex->guest_GPR6);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R7 * 4), (void*)vex->guest_GPR7);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R8 * 4), (void*)vex->guest_GPR8);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R9 * 4), (void*)vex->guest_GPR9);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R10 * 4), (void*)vex->guest_GPR10);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R11 * 4), (void*)vex->guest_GPR11);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R12 * 4), (void*)vex->guest_GPR12);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R13 * 4), (void*)vex->guest_GPR13);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R14 * 4), (void*)vex->guest_GPR14);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R15 * 4), (void*)vex->guest_GPR15);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R16 * 4), (void*)vex->guest_GPR16);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R17 * 4), (void*)vex->guest_GPR17);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R18 * 4), (void*)vex->guest_GPR18);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R19 * 4), (void*)vex->guest_GPR19);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R20 * 4), (void*)vex->guest_GPR20);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R21 * 4), (void*)vex->guest_GPR21);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R22 * 4), (void*)vex->guest_GPR22);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R23 * 4), (void*)vex->guest_GPR23);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R24 * 4), (void*)vex->guest_GPR24);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R25 * 4), (void*)vex->guest_GPR25);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R26 * 4), (void*)vex->guest_GPR26);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R27 * 4), (void*)vex->guest_GPR27);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R28 * 4), (void*)vex->guest_GPR28);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R29 * 4), (void*)vex->guest_GPR29);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R30 * 4), (void*)vex->guest_GPR30);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R31 * 4), (void*)vex->guest_GPR31);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_NIP * 4), (void*)vex->guest_CIA);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CCR * 4),
(void*)LibVEX_GuestPPC32_get_CR(vex));
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_LNK * 4), (void*)vex->guest_LR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CTR * 4), (void*)vex->guest_CTR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_XER * 4),
(void*)LibVEX_GuestPPC32_get_XER(vex));
return rc;
#elif defined(VGP_ppc64_linux)
Int rc = 0;
/* FRJ: copied nearly verbatim from the ppc32 case. I compared the
vki-ppc64-linux.h with its ppc32 counterpart and saw no
appreciable differences, other than the registers being 8 bytes
instead of 4. No idea why we don't set all of the entries
declared in vki_pt_regs, but ppc32 doesn't so there must be a
reason.
Finally, note that CR and XER are 32 bits even for ppc64 (see
libvex_guest_ppc64.h), but the vki_pt_regs struct still gives
them 64 bits.
*/
/* apparently the casting to void* is the Right Thing To Do */
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R0 * 8), (void*)vex->guest_GPR0);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R1 * 8), (void*)vex->guest_GPR1);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R2 * 8), (void*)vex->guest_GPR2);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R3 * 8), (void*)vex->guest_GPR3);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R4 * 8), (void*)vex->guest_GPR4);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R5 * 8), (void*)vex->guest_GPR5);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R6 * 8), (void*)vex->guest_GPR6);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R7 * 8), (void*)vex->guest_GPR7);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R8 * 8), (void*)vex->guest_GPR8);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R9 * 8), (void*)vex->guest_GPR9);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R10 * 8), (void*)vex->guest_GPR10);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R11 * 8), (void*)vex->guest_GPR11);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R12 * 8), (void*)vex->guest_GPR12);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R13 * 8), (void*)vex->guest_GPR13);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R14 * 8), (void*)vex->guest_GPR14);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R15 * 8), (void*)vex->guest_GPR15);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R16 * 8), (void*)vex->guest_GPR16);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R17 * 8), (void*)vex->guest_GPR17);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R18 * 8), (void*)vex->guest_GPR18);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R19 * 8), (void*)vex->guest_GPR19);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R20 * 8), (void*)vex->guest_GPR20);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R21 * 8), (void*)vex->guest_GPR21);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R22 * 8), (void*)vex->guest_GPR22);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R23 * 8), (void*)vex->guest_GPR23);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R24 * 8), (void*)vex->guest_GPR24);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R25 * 8), (void*)vex->guest_GPR25);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R26 * 8), (void*)vex->guest_GPR26);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R27 * 8), (void*)vex->guest_GPR27);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R28 * 8), (void*)vex->guest_GPR28);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R29 * 8), (void*)vex->guest_GPR29);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R30 * 8), (void*)vex->guest_GPR30);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_R31 * 8), (void*)vex->guest_GPR31);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_NIP * 8), (void*)vex->guest_CIA);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CCR * 8),
(void*)(long)LibVEX_GuestPPC64_get_CR(vex));
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_LNK * 8), (void*)vex->guest_LR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_CTR * 8), (void*)vex->guest_CTR);
rc |= VG_(ptrace)(VKI_PTRACE_POKEUSR, pid, (void*)(VKI_PT_XER * 8),
(void*)(long)LibVEX_GuestPPC64_get_XER(vex));
return rc;
#elif defined(VGP_arm_linux)
struct vki_user_regs_struct uregs;
VG_(memset)(&uregs, 0, sizeof(uregs));
uregs.ARM_r0 = vex->guest_R0;
uregs.ARM_r1 = vex->guest_R1;
uregs.ARM_r2 = vex->guest_R2;
uregs.ARM_r3 = vex->guest_R3;
uregs.ARM_r4 = vex->guest_R4;
uregs.ARM_r5 = vex->guest_R5;
uregs.ARM_r6 = vex->guest_R6;
uregs.ARM_r7 = vex->guest_R7;
uregs.ARM_r8 = vex->guest_R8;
uregs.ARM_r9 = vex->guest_R9;
uregs.ARM_r10 = vex->guest_R10;
uregs.ARM_fp = vex->guest_R11;
uregs.ARM_ip = vex->guest_R12;
uregs.ARM_sp = vex->guest_R13;
uregs.ARM_lr = vex->guest_R14;
uregs.ARM_pc = vex->guest_R15T;
uregs.ARM_cpsr = LibVEX_GuestARM_get_cpsr(vex);
return VG_(ptrace)(VKI_PTRACE_SETREGS, pid, NULL, &uregs);
#elif defined(VGP_ppc32_aix5)
I_die_here;
#elif defined(VGP_ppc64_aix5)
I_die_here;
#elif defined(VGP_x86_darwin)
I_die_here;
#elif defined(VGP_amd64_darwin)
I_die_here;
#else
# error Unknown arch
#endif
}
