Re: [PATCH v5 19/25] xtensa: define syscall_get_* functions

syscall_get_* functions are required to be implemented on all architectures in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. This adds all 5 syscall_get_* functions on xtensa as documented in asm-generic/syscall.h: syscall_get_nr, syscall_get_arguments, syscall_get_error, syscall_get_return_value, and syscall_get_arch.

diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h index 3673ff1f1bc5..d529c855a144 100644 --- a/arch/xtensa/include/asm/syscall.h +++ b/arch/xtensa/include/asm/syscall.h

+static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + switch (i) { + case 0: + if (!n--) + break; + *args++ = regs->areg[6]; + /* fall through */ + case 1: + if (!n--) + break; + *args++ = regs->areg[3]; + /* fall through */ + case 2: + if (!n--) + break; + *args++ = regs->areg[4]; + /* fall through */ + case 3: + if (!n--) + break; + *args++ = regs->areg[5]; + /* fall through */ + case 4: + if (!n--) + break; + *args++ = regs->areg[8]; + /* fall through */ + case 5: + if (!n--) + break; + *args++ = regs->areg[9]; + /* fall through */ + case 6: + if (!n--) + break; + /* fall through */ + default: + BUG();