Move Android ucontext.h out of third_party.

Google is re-licensing this code under the standard dual license of
compiler-rt.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@204128 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 190 insertions, 0 deletions

diff --git a/android/include/sys/ucontext.h b/android/include/sys/ucontext.h
new file mode 100644
index 000000000..81e65a5c5
--- /dev/null
+++ b/android/include/sys/ucontext.h
@@ -0,0 +1,154 @@
+//===-- ucontext.h ----------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+// ===----------------------------------------------------------------------===
+
+#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
+#define GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
+
+#include <sys/cdefs.h>
+#include <signal.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+#ifndef __BIONIC_HAVE_UCONTEXT_T
+
+// Ensure that 'stack_t' is defined.
+#include <asm/signal.h>
+
+// This version of the Android C library headers do not provide ucontext_t.
+// Provide custom definitions for Google Breakpad.
+#if defined(__arm__)
+
+// Ensure that 'struct sigcontext' is defined.
+#include <asm/sigcontext.h>
+typedef struct sigcontext mcontext_t;
+
+// The ARM kernel uses a 64-bit signal mask.
+typedef uint32_t  kernel_sigmask_t[2];
+
+typedef struct ucontext {
+  uint32_t uc_flags;
+  struct ucontext* uc_link;
+  stack_t uc_stack;
+  mcontext_t uc_mcontext;
+  kernel_sigmask_t uc_sigmask;
+  // Other fields are not used by Google Breakpad. Don't define them.
+} ucontext_t;
+
+#elif defined(__i386__)
+
+/* 80-bit floating-point register */
+struct _libc_fpreg {
+  unsigned short significand[4];
+  unsigned short exponent;
+};
+
+/* Simple floating-point state, see FNSTENV instruction */
+struct _libc_fpstate {
+  unsigned long cw;
+  unsigned long sw;
+  unsigned long tag;
+  unsigned long ipoff;
+  unsigned long cssel;
+  unsigned long dataoff;
+  unsigned long datasel;
+  struct _libc_fpreg _st[8];
+  unsigned long status;
+};
+
+typedef uint32_t  greg_t;
+
+typedef struct {
+  uint32_t gregs[19];
+  struct _libc_fpstate* fpregs;
+  uint32_t oldmask;
+  uint32_t cr2;
+} mcontext_t;
+
+enum {
+  REG_GS = 0,
+  REG_FS,
+  REG_ES,
+  REG_DS,
+  REG_EDI,
+  REG_ESI,
+  REG_EBP,
+  REG_ESP,
+  REG_EBX,
+  REG_EDX,
+  REG_ECX,
+  REG_EAX,
+  REG_TRAPNO,
+  REG_ERR,
+  REG_EIP,
+  REG_CS,
+  REG_EFL,
+  REG_UESP,
+  REG_SS,
+};
+
+// The i386 kernel uses a 64-bit signal mask.
+typedef uint32_t kernel_sigmask_t[2];
+
+typedef struct ucontext {
+  uint32_t uc_flags;
+  struct ucontext* uc_link;
+  stack_t uc_stack;
+  mcontext_t uc_mcontext;
+  kernel_sigmask_t uc_sigmask;
+  struct _libc_fpstate __fpregs_mem;
+} ucontext_t;
+
+#elif defined(__mips__)
+
+typedef struct {
+  uint32_t regmask;
+  uint32_t status;
+  uint64_t pc;
+  uint64_t gregs[32];
+  uint64_t fpregs[32];
+  uint32_t acx;
+  uint32_t fpc_csr;
+  uint32_t fpc_eir;
+  uint32_t used_math;
+  uint32_t dsp;
+  uint64_t mdhi;
+  uint64_t mdlo;
+  uint32_t hi1;
+  uint32_t lo1;
+  uint32_t hi2;
+  uint32_t lo2;
+  uint32_t hi3;
+  uint32_t lo3;
+} mcontext_t;
+
+// The MIPS kernel uses a 128-bit signal mask.
+typedef uint32_t kernel_sigmask_t[4];
+
+typedef struct ucontext {
+  uint32_t uc_flags;
+  struct ucontext* uc_link;
+  stack_t uc_stack;
+  mcontext_t uc_mcontext;
+  kernel_sigmask_t uc_sigmask;
+  // Other fields are not used by Google Breakpad. Don't define them.
+} ucontext_t;
+
+#else
+#  error "Unsupported Android CPU ABI!"
+#endif
+
+#endif  // __BIONIC_HAVE_UCONTEXT_T
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_UCONTEXT_H
diff --git a/android/include/ucontext.h b/android/include/ucontext.h
new file mode 100644
index 000000000..178ddf3d4
--- /dev/null
+++ b/android/include/ucontext.h
@@ -0,0 +1,36 @@
+//===-- ucontext.h ----------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+// ===----------------------------------------------------------------------===
+
+#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H
+#define GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H
+
+#include <sys/cdefs.h>
+
+#ifdef __BIONIC_UCONTEXT_H
+#include <ucontext.h>
+#else
+
+#include <sys/ucontext.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+// Provided by src/android/common/breakpad_getcontext.S
+int breakpad_getcontext(ucontext_t* ucp);
+
+#define getcontext(x)   breakpad_getcontext(x)
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // __BIONIC_UCONTEXT_H
+
+#endif  // GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H