#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_USER_H
#define GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_USER_H
+// The purpose of this file is to glue the mismatching headers (Android NDK vs
+// glibc) and therefore avoid doing otherwise awkward #ifdefs in the code.
+// The following quirks are currently handled by this file:
+// - MIPS: Keep using forked definitions of user.h structs. The definition in
+// the NDK is completely different.
+// Internal bug b/18097715
+// - i386: Use the Android NDK but alias user_fxsr_struct > user_fpxregs_struct.
+// - Other platforms: Just use the Android NDK unchanged.
+
+#ifdef __mips__
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
-// These types are used with ptrace(), more specifically with
-// PTRACE_GETREGS, PTRACE_GETFPREGS and PTRACE_GETVFPREGS respectively.
-//
-// They are also defined, sometimes with different names, in <asm/user.h>
-//
-
-#if defined(__arm__)
-
-#define _ARM_USER_H 1 // Prevent <asm/user.h> conflicts
-
-// Note: on ARM, GLibc uses user_regs instead of user_regs_struct.
-struct user_regs {
- // Note: Entries 0-15 match r0..r15
- // Entry 16 is used to store the CPSR register.
- // Entry 17 is used to store the "orig_r0" value.
- unsigned long int uregs[18];
-};
-
-// Same here: user_fpregs instead of user_fpregs_struct.
-struct user_fpregs {
- struct fp_reg {
- unsigned int sign1:1;
- unsigned int unused:15;
- unsigned int sign2:1;
- unsigned int exponent:14;
- unsigned int j:1;
- unsigned int mantissa1:31;
- unsigned int mantissa0:32;
- } fpregs[8];
- unsigned int fpsr:32;
- unsigned int fpcr:32;
- unsigned char ftype[8];
- unsigned int init_flag;
-};
-
-// GLibc doesn't define this one in <sys/user.h> though.
-struct user_vfpregs {
- unsigned long long fpregs[32];
- unsigned long fpscr;
-};
-
-#elif defined(__aarch64__)
-
-// aarch64 does not have user_regs definitions in <asm/user.h>, instead
-// use the definitions in <asm/ptrace.h>, which we don't need to redefine here.
-
-#elif defined(__i386__)
-
-#define _I386_USER_H 1 // Prevent <asm/user.h> conflicts
-
-// GLibc-compatible definitions
-struct user_regs_struct {
- long ebx, ecx, edx, esi, edi, ebp, eax;
- long xds, xes, xfs, xgs, orig_eax;
- long eip, xcs, eflags, esp, xss;
-};
-
-struct user_fpregs_struct {
- long cwd, swd, twd, fip, fcs, foo, fos;
- long st_space[20];
-};
-
-struct user_fpxregs_struct {
- unsigned short cwd, swd, twd, fop;
- long fip, fcs, foo, fos, mxcsr, reserved;
- long st_space[32];
- long xmm_space[32];
- long padding[56];
-};
-
-struct user {
- struct user_regs_struct regs;
- int u_fpvalid;
- struct user_fpregs_struct i387;
- unsigned long u_tsize;
- unsigned long u_dsize;
- unsigned long u_ssize;
- unsigned long start_code;
- unsigned long start_stack;
- long signal;
- int reserved;
- struct user_regs_struct* u_ar0;
- struct user_fpregs_struct* u_fpstate;
- unsigned long magic;
- char u_comm [32];
- int u_debugreg [8];
-};
-
-
-#elif defined(__mips__)
-
-#define _ASM_USER_H 1 // Prevent <asm/user.h> conflicts
-
#define EF_REG0 6
#define EF_REG1 7
#define EF_REG2 8
*/
#define EF_REG26 32
#define EF_REG27 33
-
#define EF_REG28 34
#define EF_REG29 35
#define EF_REG30 36
unsigned int fir;
};
-#elif defined(__x86_64__)
-
-// Bionic's user_fpregs_struct calls the tag word twd instead of ftw. To avoid
-// changing lots of Bionic, use an ugly macro renaming trick with
-// #include_next.
-// TODO(rmcilroy): Remove when NDK headers are fixed.
-#define user_fpregs_struct __bionic_user_fpregs_struct
-#include_next <sys/user.h>
-#undef user_fpregs_struct
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
-// This struct is the same as user_fpregs_struct in Bionic's sys/user.h
-// except that the struct name and individual field names are chosen here
-// to match the ones used in breakpad for other x86_64 platforms.
-struct user_fpregs_struct {
- __u16 cwd;
- __u16 swd;
- __u16 ftw;
- __u16 fop;
- __u64 rip;
- __u64 rdp;
- __u32 mxcsr;
- __u32 mxcr_mask;
- __u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
- __u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
- __u32 padding[24];
-};
+#else // __mips__
-#else
-# error "Unsupported Android CPU ABI"
-#endif
+#include_next <sys/user.h>
+#ifdef __i386__
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+typedef struct user_fxsr_struct user_fpxregs_struct;
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
+#endif // __i386__
+
+#endif // __mips__
#endif // GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_SYS_USER_H
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