cf4aa68388
[11/11] patch series to port ASAN for riscv64 These changes allow using ASAN on RISCV64 architecture. The majority of existing tests are passing. With few exceptions (see below). Tests we run on qemu and on "HiFive Unleashed" board. Tests run: ``` Asan-riscv64-inline-Test - pass Asan-riscv64-inline-Noinst-Test - pass Asan-riscv64-calls-Noinst-Test - pass Asan-riscv64-calls-Test - pass ``` Lit tests: ``` RISCV64LinuxConfig (282 supported, few failures) RISCV64LinuxDynamicConfig (289 supported, few failures) ``` Lit failures: ``` TestCases/malloc_context_size.cpp - asan works, but backtrace misses some calls TestCases/Linux/malloc_delete_mismatch.cpp - asan works, but backtrace misses some calls TestCases/Linux/static_tls.cpp - "Can't guess glibc version" (under debugging) TestCases/asan_and_llvm_coverage_test.cpp - missing libclang_rt.profile-riscv64.a ``` These failures are under debugging currently and shall be addressed in a subsequent commits. Depends On D87581 Reviewed By: eugenis, vitalybuka Differential Revision: https://reviews.llvm.org/D87582
141 lines
4.4 KiB
C++
141 lines
4.4 KiB
C++
// 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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