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141 lines
4.4 KiB
141 lines
4.4 KiB
// FIXME: https://code.google.com/p/address-sanitizer/issues/detail?id=316
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// XFAIL: android
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// XFAIL: mips
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//
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// RUN: %clangxx_asan -O0 %s -o %t && %run %t
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// RUN: %clangxx_asan -DPOSITIVE -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
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#include <assert.h>
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#include <stdio.h>
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#include <sys/ptrace.h>
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#include <sys/types.h>
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#include <sys/user.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <sys/uio.h> // for iovec
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#include <elf.h> // for NT_PRSTATUS
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#ifdef __aarch64__
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# include <asm/ptrace.h>
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#endif
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#if defined(__i386__) || defined(__x86_64__)
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typedef user_regs_struct regs_struct;
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typedef user_fpregs_struct fpregs_struct;
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#if defined(__i386__)
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#define REG_IP eip
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#else
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#define REG_IP rip
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#endif
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#define PRINT_REG_PC(__regs) printf ("%lx\n", (unsigned long) (__regs.REG_IP))
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#define PRINT_REG_FP(__fpregs) printf ("%lx\n", (unsigned long) (__fpregs.cwd))
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#define __PTRACE_FPREQUEST PTRACE_GETFPREGS
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#elif defined(__aarch64__)
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typedef struct user_pt_regs regs_struct;
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typedef struct user_fpsimd_state fpregs_struct;
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#define PRINT_REG_PC(__regs) printf ("%x\n", (unsigned) (__regs.pc))
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#define PRINT_REG_FP(__fpregs) printf ("%x\n", (unsigned) (__fpregs.fpsr))
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#define ARCH_IOVEC_FOR_GETREGSET
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#elif defined(__powerpc64__)
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typedef struct pt_regs regs_struct;
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typedef elf_fpregset_t fpregs_struct;
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#define PRINT_REG_PC(__regs) printf ("%lx\n", (unsigned long) (__regs.nip))
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#define PRINT_REG_FP(__fpregs) printf ("%lx\n", (elf_greg_t)fpregs[32])
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#define ARCH_IOVEC_FOR_GETREGSET
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#elif defined(__mips__)
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typedef struct pt_regs regs_struct;
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typedef elf_fpregset_t fpregs_struct;
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#define PRINT_REG_PC(__regs) printf ("%lx\n", (unsigned long) (__regs.cp0_epc))
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#define PRINT_REG_FP(__fpregs) printf ("%lx\n", (elf_greg_t) (__fpregs[32]))
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#define __PTRACE_FPREQUEST PTRACE_GETFPREGS
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#elif defined(__arm__)
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# include <asm/ptrace.h>
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# include <sys/procfs.h>
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typedef struct pt_regs regs_struct;
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typedef char fpregs_struct[ARM_VFPREGS_SIZE];
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#define PRINT_REG_PC(__regs) printf ("%x\n", (unsigned) (__regs.ARM_pc))
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#define PRINT_REG_FP(__fpregs) printf ("%x\n", (unsigned) (__fpregs + 32 * 8))
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#define __PTRACE_FPREQUEST PTRACE_GETVFPREGS
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#elif defined(__s390__)
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typedef _user_regs_struct regs_struct;
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typedef _user_fpregs_struct fpregs_struct;
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#define PRINT_REG_PC(__regs) printf ("%lx\n", (unsigned long) (__regs.psw.addr))
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#define PRINT_REG_FP(__fpregs) printf ("%lx\n", (unsigned long) (__fpregs.fpc))
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#define ARCH_IOVEC_FOR_GETREGSET
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#elif defined(__riscv) && (__riscv_xlen == 64)
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#include <asm/ptrace.h>
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typedef user_regs_struct regs_struct;
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typedef __riscv_q_ext_state fpregs_struct;
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#define PRINT_REG_PC(__regs) printf("%lx\n", (unsigned long)(__regs.pc))
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#define PRINT_REG_FP(__fpregs) printf("%lx\n", (unsigned long)(__fpregs.fcsr))
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#define ARCH_IOVEC_FOR_GETREGSET
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#endif
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int main(void) {
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pid_t pid;
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pid = fork();
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if (pid == 0) { // child
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ptrace(PTRACE_TRACEME, 0, NULL, NULL);
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execl("/bin/true", "true", NULL);
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} else {
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wait(NULL);
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regs_struct regs;
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regs_struct* volatile pregs = ®s;
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#ifdef ARCH_IOVEC_FOR_GETREGSET
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struct iovec regset_io;
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#endif
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int res;
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#ifdef POSITIVE
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++pregs;
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#endif
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#ifdef ARCH_IOVEC_FOR_GETREGSET
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# define __PTRACE_REQUEST PTRACE_GETREGSET
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# define __PTRACE_ARGS (void*)NT_PRSTATUS, (void*)®set_io
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regset_io.iov_base = pregs;
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regset_io.iov_len = sizeof(regs_struct);
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#else
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# define __PTRACE_REQUEST PTRACE_GETREGS
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# define __PTRACE_ARGS NULL, pregs
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#endif
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res = ptrace((enum __ptrace_request)__PTRACE_REQUEST, pid, __PTRACE_ARGS);
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// CHECK: AddressSanitizer: stack-buffer-overflow
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// CHECK: {{.*ptrace.cpp:}}[[@LINE-2]]
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assert(!res);
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PRINT_REG_PC(regs);
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fpregs_struct fpregs;
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#ifdef ARCH_IOVEC_FOR_GETREGSET
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# define __PTRACE_FPREQUEST PTRACE_GETREGSET
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# define __PTRACE_FPARGS (void*)NT_PRSTATUS, (void*)®set_io
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regset_io.iov_base = &fpregs;
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regset_io.iov_len = sizeof(fpregs_struct);
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res = ptrace((enum __ptrace_request)PTRACE_GETREGSET, pid, (void*)NT_FPREGSET,
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(void*)®set_io);
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#else
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# define __PTRACE_FPARGS NULL, &fpregs
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#endif
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res = ptrace((enum __ptrace_request)__PTRACE_FPREQUEST, pid, __PTRACE_FPARGS);
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assert(!res);
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PRINT_REG_FP(fpregs);
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#ifdef __i386__
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user_fpxregs_struct fpxregs;
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res = ptrace(PTRACE_GETFPXREGS, pid, NULL, &fpxregs);
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assert(!res);
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printf("%lx\n", (unsigned long)fpxregs.mxcsr);
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#endif
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ptrace(PTRACE_CONT, pid, NULL, NULL);
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wait(NULL);
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}
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return 0;
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}
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