[binutils-gdb] LoongArch: Fix ld "undefined reference" error with --enable-shared

[binutils-gdb] LoongArch: Fix ld "undefined reference" error with --enable-shared

[liu & zhensong]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d2fddb6d783320726328707d53aa74e3c48616ef

commit d2fddb6d783320726328707d53aa74e3c48616ef
Author: mengqinggang <mengqinggang@loongson.cn>
Date:   Tue Jun 13 16:07:12 2023 +0800

    LoongArch: Fix ld "undefined reference" error with --enable-shared
    
      Because _bfd_read_unsigned_leb128 is hidden visibility, so it can't
      be referenced out of shared object.
    
      The new function loongarch_get_uleb128_length just used to call
      _bfd_read_unsigned_leb128.
    
    bfd/ChangeLog:
    
            * elfxx-loongarch.c (loongarch_get_uleb128_length): New function.
            * elfxx-loongarch.h (loongarch_get_uleb128_length): New function.
    
    gas/ChangeLog:
    
            * config/tc-loongarch.c (md_apply_fix): Use
            loongarch_get_uleb128_length.

Diff:
---
 bfd/elfxx-loongarch.c     | 7 +++++++
 bfd/elfxx-loongarch.h     | 2 ++
 gas/config/tc-loongarch.c | 2 +-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/bfd/elfxx-loongarch.c b/bfd/elfxx-loongarch.c
index ac644fff2f6..cb312c46bb2 100644
--- a/bfd/elfxx-loongarch.c
+++ b/bfd/elfxx-loongarch.c
@@ -1944,3 +1944,10 @@ loongarch_write_unsigned_leb128 (bfd_byte *p, unsigned int len, bfd_vma value)
   while (len);
   return p;
 }
+
+int loongarch_get_uleb128_length (bfd_byte *buf)
+{
+  unsigned int len = 0;
+  _bfd_read_unsigned_leb128 (NULL, buf, &len);
+  return len;
+}
diff --git a/bfd/elfxx-loongarch.h b/bfd/elfxx-loongarch.h
index cb02af4fe73..627c5db7bcc 100644
--- a/bfd/elfxx-loongarch.h
+++ b/bfd/elfxx-loongarch.h
@@ -44,6 +44,8 @@ bfd_elf64_loongarch_set_data_segment_info (struct bfd_link_info *, int *);
 bfd_byte *
 loongarch_write_unsigned_leb128 (bfd_byte *p, unsigned int len, bfd_vma value);
 
+int loongarch_get_uleb128_length (bfd_byte *buf);
+
 /* TRUE if this is a PLT reference to a local IFUNC.  */
 #define PLT_LOCAL_IFUNC_P(INFO, H) \
   ((H)->dynindx == -1 \
diff --git a/gas/config/tc-loongarch.c b/gas/config/tc-loongarch.c
index 5ca9de47629..d1c5ce287e4 100644
--- a/gas/config/tc-loongarch.c
+++ b/gas/config/tc-loongarch.c
@@ -1382,7 +1382,7 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
     case BFD_RELOC_LARCH_SUB_ULEB128:
       {
 	unsigned int len = 0;
-	_bfd_read_unsigned_leb128 (NULL, (bfd_byte *)buf, &len);
+	len = loongarch_get_uleb128_length ((bfd_byte *)buf);
 	bfd_byte *endp = (bfd_byte*) buf + len -1;
 	/* Clean the uleb128 value to 0. Do not reduce the length.  */
 	memset (buf, 0x80, len - 1);