[glibc/azanella/syscall-refactor] riscv: Add internal_syscall

[glibc/azanella/syscall-refactor] riscv: Add internal_syscall

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=583910b27fd89dccc05cfeb51424b7b3bebfcfa7

commit 583910b27fd89dccc05cfeb51424b7b3bebfcfa7
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Tue May 26 16:35:46 2020 +0000

    riscv: Add internal_syscall

Diff:
---
 sysdeps/unix/sysv/linux/riscv/sysdep.h | 111 ++++++++++++++++++++++++++++++++-
 1 file changed, 110 insertions(+), 1 deletion(-)

diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep.h b/sysdeps/unix/sysv/linux/riscv/sysdep.h
index 83e4adf6a2..07693a6e90 100644
--- a/sysdeps/unix/sysv/linux/riscv/sysdep.h
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep.h
@@ -20,7 +20,8 @@
 #define _LINUX_RISCV_SYSDEP_H 1
 
 #include <sysdeps/unix/sysv/linux/generic/sysdep.h>
-#include <tls.h>
+/* Defines RTLD_PRIVATE_ERRNO.  */
+#include <dl-sysdep.h>
 
 #ifdef __ASSEMBLER__
 
@@ -327,6 +328,114 @@
 
 extern long int __syscall_error (long int neg_errno);
 
+static inline long int
+__internal_syscall0 (long int name)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0");
+  asm volatile ("scall\n\t"
+		: "=r" (a0)
+		: "r" (a7)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall1 (long int name, __syscall_arg_t arg1)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall2 (long int name, __syscall_arg_t arg1,
+		     __syscall_arg_t arg2)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  register long int a1 asm ("a1") = arg2;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7), "r" (a1)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall3 (long int name, __syscall_arg_t arg1,
+		     __syscall_arg_t arg2, __syscall_arg_t arg3)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  register long int a1 asm ("a1") = arg2;
+  register long int a2 asm ("a2") = arg3;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7), "r" (a1), "r" (a2)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall4 (long int name, __syscall_arg_t arg1,
+		     __syscall_arg_t arg2, __syscall_arg_t arg3,
+		     __syscall_arg_t arg4)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  register long int a1 asm ("a1") = arg2;
+  register long int a2 asm ("a2") = arg3;
+  register long int a3 asm ("a3") = arg4;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7), "r" (a1), "r" (a2), "r" (a3)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall5 (long int name, __syscall_arg_t arg1,
+		     __syscall_arg_t arg2, __syscall_arg_t arg3,
+		     __syscall_arg_t arg4, __syscall_arg_t arg5)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  register long int a1 asm ("a1") = arg2;
+  register long int a2 asm ("a2") = arg3;
+  register long int a3 asm ("a3") = arg4;
+  register long int a4 asm ("a4") = arg5;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7), "r" (a1), "r" (a2), "r" (a3), "r" (a4)
+		: "memory");
+  return a0;
+}
+
+static inline long int
+__internal_syscall6 (long int name, __syscall_arg_t arg1,
+		     __syscall_arg_t arg2, __syscall_arg_t arg3,
+		     __syscall_arg_t arg4, __syscall_arg_t arg5,
+		     __syscall_arg_t arg6)
+{
+  register long int a7 asm ("a7") = name;
+  register long int a0 asm ("a0") = arg1;
+  register long int a1 asm ("a1") = arg2;
+  register long int a2 asm ("a2") = arg3;
+  register long int a3 asm ("a3") = arg4;
+  register long int a4 asm ("a4") = arg5;
+  register long int a5 asm ("a5") = arg6;
+  asm volatile ("scall\n\t"
+		: "+r" (a0)
+		: "r" (a7), "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5)
+		: "memory");
+  return a0;
+}
+
 #endif /* ! __ASSEMBLER__ */
 
 /* Pointer mangling is not supported.  */