diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h | 64 |
1 files changed, 59 insertions, 5 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h index f82957d15..02fe27869 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/sysdep-cancel.h @@ -25,6 +25,7 @@ #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt +#if defined(__XTENSA_WINDOWED_ABI__) /* CENABLE/CDISABLE in PSEUDO below use call8, stack frame size must be * at least 32. */ @@ -58,6 +59,64 @@ j SYSCALL_ERROR_LABEL; \ .Lpseudo_end: +# define CENABLE movi a8, CENABLE_FUNC; \ + callx8 a8 +# define CDISABLE movi a8, CDISABLE_FUNC; \ + callx8 a8 +#elif defined(__XTENSA_CALL0_ABI__) + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .text; \ + ENTRY (name) \ + SINGLE_THREAD_P(a10); \ + bnez a10, .Lpseudo_cancel; \ + DO_CALL (syscall_name, args); \ + bgez a2, .Lpseudo_done; \ + movi a4, -4095; \ + blt a2, a4, .Lpseudo_done; \ + j SYSCALL_ERROR_LABEL; \ + .Lpseudo_done: \ + ret; \ + .Lpseudo_cancel: \ + addi a1, a1, -32; \ + /* The syscall args are in a2...a7; save them */ \ + s32i a0, a1, 0; \ + s32i a2, a1, 4; \ + s32i a3, a1, 8; \ + s32i a4, a1, 12; \ + s32i a5, a1, 16; \ + s32i a6, a1, 20; \ + s32i a7, a1, 24; \ + CENABLE; \ + /* Move return value to a10 preserved across the syscall */ \ + mov a10, a2; \ + l32i a2, a1, 4; \ + l32i a3, a1, 8; \ + l32i a4, a1, 12; \ + l32i a5, a1, 16; \ + l32i a6, a1, 20; \ + l32i a7, a1, 24; \ + DO_CALL (syscall_name, args); \ + s32i a2, a1, 4; \ + mov a2, a10; \ + CDISABLE; \ + l32i a2, a1, 4; \ + l32i a0, a1, 0; \ + addi a1, a1, 32; \ + bgez a2, .Lpseudo_end; \ + movi a4, -4095; \ + blt a2, a4, .Lpseudo_end; \ + j SYSCALL_ERROR_LABEL; \ + .Lpseudo_end: + +# define CENABLE movi a0, CENABLE_FUNC; \ + callx0 a0 +# define CDISABLE movi a0, CDISABLE_FUNC; \ + callx0 a0 +#else +#error Unsupported Xtensa ABI +#endif # ifdef IS_IN_libpthread # define CENABLE_FUNC __pthread_enable_asynccancel @@ -74,11 +133,6 @@ # error Unsupported library # endif -# define CENABLE movi a8, CENABLE_FUNC; \ - callx8 a8 -# define CDISABLE movi a8, CDISABLE_FUNC; \ - callx8 a8 - # if defined IS_IN_libpthread || !defined NOT_IN_libc # ifndef __ASSEMBLER__ extern int __local_multiple_threads attribute_hidden; |