[glibc] RISC-V: Allow long jumps to __syscall_error

[DJ Delorie <dj@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=22c96052acf78c5f4644117bece38715fc7210cf

commit 22c96052acf78c5f4644117bece38715fc7210cf
Author: Łukasz Stelmach <l.stelmach@samsung.com>
Date:   Fri Sep 16 21:31:27 2022 +0200

    RISC-V: Allow long jumps to __syscall_error
    
    __syscall_error may end up farther than 1MiB away from a caller,
    especially when linking statically large binaries. tail allows for
    4GiB jumps and is reduced to j when a linked symbol is within range.
    
    Fixes: 36960f0c76 ("RISC-V: Linux Syscall Interface")
    Fixes: 7f33b09c65 ("RISC-V: Linux ABI")
    Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>

Diff:
---
 sysdeps/unix/sysv/linux/riscv/clone.S       | 2 +-
 sysdeps/unix/sysv/linux/riscv/getcontext.S  | 2 +-
 sysdeps/unix/sysv/linux/riscv/setcontext.S  | 2 +-
 sysdeps/unix/sysv/linux/riscv/swapcontext.S | 2 +-
 sysdeps/unix/sysv/linux/riscv/sysdep.h      | 2 +-
 sysdeps/unix/sysv/linux/riscv/vfork.S       | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/riscv/clone.S b/sysdeps/unix/sysv/linux/riscv/clone.S
index d7d2915e87..45ea8f184b 100644
--- a/sysdeps/unix/sysv/linux/riscv/clone.S
+++ b/sysdeps/unix/sysv/linux/riscv/clone.S
@@ -63,7 +63,7 @@ L (invalid):
 	li		a0, -EINVAL
 	/* Something bad happened -- no child created.  */
 L (error):
-	j		__syscall_error
+	tail		__syscall_error
 	END (__clone)
 
 /* Load up the arguments to the function.  Put this block of code in
diff --git a/sysdeps/unix/sysv/linux/riscv/getcontext.S b/sysdeps/unix/sysv/linux/riscv/getcontext.S
index 499f70b65d..f4f828805c 100644
--- a/sysdeps/unix/sysv/linux/riscv/getcontext.S
+++ b/sysdeps/unix/sysv/linux/riscv/getcontext.S
@@ -70,7 +70,7 @@ LEAF (__getcontext)
 
 	ret
 
-99:	j	__syscall_error
+99:	tail	__syscall_error
 
 PSEUDO_END (__getcontext)
 
diff --git a/sysdeps/unix/sysv/linux/riscv/setcontext.S b/sysdeps/unix/sysv/linux/riscv/setcontext.S
index e3bc84a2e6..1e529b900c 100644
--- a/sysdeps/unix/sysv/linux/riscv/setcontext.S
+++ b/sysdeps/unix/sysv/linux/riscv/setcontext.S
@@ -92,7 +92,7 @@ LEAF (__setcontext)
 
 	jr	t1
 
-99:	j	__syscall_error
+99:	tail	__syscall_error
 
 END (__setcontext)
 libc_hidden_def (__setcontext)
diff --git a/sysdeps/unix/sysv/linux/riscv/swapcontext.S b/sysdeps/unix/sysv/linux/riscv/swapcontext.S
index 4da615f6d4..287ba364cd 100644
--- a/sysdeps/unix/sysv/linux/riscv/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/riscv/swapcontext.S
@@ -118,7 +118,7 @@ LEAF (__swapcontext)
 	jr	t1
 
 
-99:	j	__syscall_error
+99:	tail	__syscall_error
 
 PSEUDO_END (__swapcontext)
 
diff --git a/sysdeps/unix/sysv/linux/riscv/sysdep.h b/sysdeps/unix/sysv/linux/riscv/sysdep.h
index 37ff07a0d7..9b03b10567 100644
--- a/sysdeps/unix/sysv/linux/riscv/sysdep.h
+++ b/sysdeps/unix/sysv/linux/riscv/sysdep.h
@@ -102,7 +102,7 @@
 # else
 #  define SYSCALL_ERROR_HANDLER(name)				\
 .Lsyscall_error ## name:					\
-        j       __syscall_error;
+        tail    __syscall_error;
 # endif
 
 /* Performs a system call, not setting errno.  */
diff --git a/sysdeps/unix/sysv/linux/riscv/vfork.S b/sysdeps/unix/sysv/linux/riscv/vfork.S
index 0970543619..1482406e2d 100644
--- a/sysdeps/unix/sysv/linux/riscv/vfork.S
+++ b/sysdeps/unix/sysv/linux/riscv/vfork.S
@@ -39,7 +39,7 @@ LEAF (__libc_vfork)
 	bltz	a0, 1f
 	ret
 
-1:	j		__syscall_error
+1:	tail	__syscall_error
 END (__libc_vfork)
 
 weak_alias (__libc_vfork, vfork)