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sparc: Use Linux kABI for syscall return
It changes the sparc internal_syscall* macros to return a negative value instead of the 'g1' register value in the 'err' macro argument. The __SYSCALL_STRING macro is also changed to no set the 'g1' value, since 'o1' already holds all the required information to check if syscall has failed. The macro INTERNAL_SYSCALL_DECL is no longer required, and the INTERNAL_SYSCALL_ERROR_P macro follows the other Linux kABIs. The redefinition of INTERNAL_VSYSCALL_CALL is also no longer required. Checked on sparc64-linux-gnu and sparcv9-linux-gnu. It fixes the sporadic issues on sparc32 where clock_nanosleep does not act as cancellation entrypoint.
This commit is contained in:
Adhemerval Zanella
parent
e26b8a008a
commit
86c5d2cf0c
@ -110,9 +110,8 @@ ENTRY(name); \
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#define __SYSCALL_STRING \
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"ta 0x10;" \
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"bcc 1f;" \
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" mov 0, %%g1;" \
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" nop;" \
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"sub %%g0, %%o0, %%o0;" \
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"mov 1, %%g1;" \
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"1:"
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#define __SYSCALL_CLOBBERS \
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@ -109,9 +109,8 @@ ENTRY(name); \
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#define __SYSCALL_STRING \
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"ta 0x6d;" \
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"bcc,pt %%xcc, 1f;" \
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" mov 0, %%g1;" \
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" nop;" \
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"sub %%g0, %%o0, %%o0;" \
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"mov 1, %%g1;" \
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"1:"
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#define __SYSCALL_CLOBBERS \
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@ -34,13 +34,6 @@
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#else /* __ASSEMBLER__ */
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#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
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({ \
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long _ret = funcptr (args); \
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err = ((unsigned long) (_ret) >= (unsigned long) -4095L); \
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_ret; \
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})
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# define VDSO_NAME "LINUX_2.6"
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# define VDSO_HASH 61765110
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@ -65,108 +58,107 @@
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})
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#undef INTERNAL_SYSCALL_DECL
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#define INTERNAL_SYSCALL_DECL(err) \
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register long err __asm__("g1");
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#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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#undef INTERNAL_SYSCALL
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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inline_syscall##nr(__SYSCALL_STRING, err, __NR_##name, args)
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internal_syscall##nr(__SYSCALL_STRING, err, __NR_##name, args)
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#undef INTERNAL_SYSCALL_NCS
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#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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inline_syscall##nr(__SYSCALL_STRING, err, name, args)
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internal_syscall##nr(__SYSCALL_STRING, err, name, args)
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#undef INTERNAL_SYSCALL_ERROR_P
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#define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((void) (val), __builtin_expect((err) != 0, 0))
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((unsigned long int) (val) > -4096UL)
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#undef INTERNAL_SYSCALL_ERRNO
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#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
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#define inline_syscall0(string,err,name,dummy...) \
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#define internal_syscall0(string,err,name,dummy...) \
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({ \
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register long int __g1 __asm__ ("g1") = (name); \
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register long __o0 __asm__ ("o0"); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err) : \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall1(string,err,name,arg1) \
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#define internal_syscall1(string,err,name,arg1) \
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0) : \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall2(string,err,name,arg1,arg2) \
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#define internal_syscall2(string,err,name,arg1,arg2) \
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1) : \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall3(string,err,name,arg1,arg2,arg3) \
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#define internal_syscall3(string,err,name,arg1,arg2,arg3) \
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1), \
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"r" (__o2) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall4(string,err,name,arg1,arg2,arg3,arg4) \
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#define internal_syscall4(string,err,name,arg1,arg2,arg3,arg4) \
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall5(string,err,name,arg1,arg2,arg3,arg4,arg5) \
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#define internal_syscall5(string,err,name,arg1,arg2,arg3,arg4,arg5) \
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall6(string,err,name,arg1,arg2,arg3,arg4,arg5,arg6) \
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#define internal_syscall6(string,err,name,arg1,arg2,arg3,arg4,arg5,arg6)\
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({ \
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register long int __g1 __asm__("g1") = (name); \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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register long __o5 __asm__ ("o5") = (long)(arg6); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4), \
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"r" (__o5) : \
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__SYSCALL_CLOBBERS); \
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@ -182,13 +174,13 @@
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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register long __g1 __asm__ ("g1") = __NR_clone; \
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__asm __volatile (__SYSCALL_STRING : \
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"=r" (__g1), "=r" (__o0), "=r" (__o1) : \
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"0" (__g1), "1" (__o0), "2" (__o1), \
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"=r" (__o0), "=r" (__o1) : \
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"r" (__g1), "0" (__o0), "1" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4) : \
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__SYSCALL_CLOBBERS); \
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if (INTERNAL_SYSCALL_ERROR_P (__o0, __g1)) \
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if (__glibc_unlikely ((unsigned long int) (__o0) > -4096UL)) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (__o0, __g1)); \
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__set_errno (-__o0); \
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__o0 = -1L; \
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} \
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else \
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