160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
#ifdef _SYSDEP_H
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#define _SYSDEP_H 1
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#include <stdint.h>
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#ifdef __i386__
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typedef struct
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{
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void *tcb;
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dtv_t *dtv;
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void *self;
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int multiple_threads;
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uintptr_t sysinfo;
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uintptr_t stack_guard;
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uintptr_t pointer_guard;
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int gscope_flag;
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int private_futex;
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} tcbhead_t;
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# ifdef FOR_GLIBC_2_6_AND_LATER
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# define PTR_MANGLE(var) asm ("xorl %%gs:%c2, %0\n" \
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"roll $9, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# define PTR_DEMANGLE(var) asm ("rorl $9, %0" \
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"xorl %%gs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# else
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# define PTR_MANGLE(var) asm ("xorl %%gs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# define PTR_DEMANGLE(var) asm ("xorl %%gs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# endif
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#elif defined __x86_64__
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typedef struct
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{
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void *tcb;
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void *dtv;
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void *self;
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int multiple_threads;
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int gscope_flag;
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uintptr_t sysinfo;
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uintptr_t stack_guard;
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uintptr_t pointer_guard;
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unsigned long int vgetcpu_cache[2];
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int private_futex;
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int __pad1;
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void *__private_tm[5];
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} tcbhead_t;
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# ifdef FOR_GLIBC_2_6_AND_LATER
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# define PTR_MANGLE(var) asm ("xorq %%fs:%c2, %0\n" \
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"rolq $17, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# define PTR_DEMANGLE(var) asm ("rorq $17, %0" \
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"xorq %%fs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# else
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# define PTR_MANGLE(var) asm ("xorq %%fs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# define PTR_DEMANGLE(var) asm ("xorq %%fs:%c2, %0" \
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: "=r" (var) \
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: "0" (var), \
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"i" (offsetof (tcbhead_t, \
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pointer_guard)))
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# endif
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#elif defined __powerpc__ || defined __powerpc64__
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typedef struct
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{
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uintptr_t pointer_guard;
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uintptr_t stack_guard;
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void *dtv;
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} tcbhead_t;
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# ifndef __powerpc64__
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register void *__thread_register __asm__ ("r2");
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# else
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register void *__thread_register __asm__ ("r13");
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# endif
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# define TLS_TCB_OFFSET 0x7000
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# define THREAD_GET_POINTER_GUARD() \
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(((tcbhead_t *) ((char *) __thread_register \
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- TLS_TCB_OFFSET))[-1].pointer_guard)
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# define PTR_MANGLE(var) \
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(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
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# define PTR_DEMANGLE(var) PTR_MANGLE (var)
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#elif defined __IA_64__
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register void *__thread_self __asm__("r13");
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#define THREAD_GET_POINTER_GUARD() \
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(((uintptr_t *) __thread_self)[-2])
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# define PTR_MANGLE(var) \
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(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
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# define PTR_DEMANGLE(var) PTR_MANGLE (var)
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#elif defined __s390__ || defined __s390x__
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typedef struct
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{
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void *tcb;
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void *dtv;
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void *self;
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int multiple_threads;
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uintptr_t sysinfo;
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uintptr_t stack_guard;
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int gscope_flag;
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int private_futex;
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} tcbhead_t;
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# define THREAD_SELF ((tcbhead_t *) __builtin_thread_pointer ())
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#define THREAD_GETMEM(descr, member) \
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descr->member
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#define THREAD_GET_POINTER_GUARD() \
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THREAD_GETMEM (THREAD_SELF, stack_guard)
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# define PTR_MANGLE(var) \
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(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
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# define PTR_DEMANGLE(var) PTR_MANGLE (var)
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#else
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# error "missing support for this architecture"
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#endif
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#endif
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