[binutils-gdb] [PR19620][GAS][AArch64]Remove mov[z, k, n] relocation symbol name restriction.

[Renlin Li <renlin at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=671eeb286f0523f13ee8a16a9a1900bb656496ca

commit 671eeb286f0523f13ee8a16a9a1900bb656496ca
Author: Renlin Li <renlin.li@arm.com>
Date:   Tue Feb 16 10:00:29 2016 +0000

    [PR19620][GAS][AArch64]Remove mov[z,k,n] relocation symbol name restriction.
    
    In AArch64 gas, register name or string starts with valid register name
    is not allowed as symbol name for mov[z,k,n] instruction.
    This patch removes the restriction.
    
    gas/
    	PR gas/19620
    	* config/tc-aarch64.c (parse_half): Remove restrictions on symbol name.
    	* testsuite/gas/aarch64/movw_label.d: New.
    	* testsuite/gas/aarch64/movw_label.s: New.

Diff:
---
 gas/ChangeLog                          |  7 +++++++
 gas/config/tc-aarch64.c                | 10 +---------
 gas/testsuite/gas/aarch64/movw_label.d | 22 ++++++++++++++++++++++
 gas/testsuite/gas/aarch64/movw_label.s | 10 ++++++++++
 4 files changed, 40 insertions(+), 9 deletions(-)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index c4bd331..f018268 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2016-02-16  Renlin Li  <renlin.li@arm.com>
+
+	PR gas/19620
+	* config/tc-aarch64.c (parse_half): Remove restrictions on symbol name.
+	* testsuite/gas/aarch64/movw_label.d: New.
+	* testsuite/gas/aarch64/movw_label.s: New.
+
 2016-02-15  Vinay Kumar G. <Vinay.G@kpit.com>
 
 	PR gas/19556
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 5cb9ab5..dfcbd52 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -3473,10 +3473,8 @@ parse_address_reloc (char **str, aarch64_opnd_info *operand)
 static bfd_boolean
 parse_half (char **str, int *internal_fixup_p)
 {
-  char *p, *saved;
-  int dummy;
+  char *p = *str;
 
-  p = *str;
   skip_past_char (&p, '#');
 
   gas_assert (internal_fixup_p);
@@ -3506,12 +3504,6 @@ parse_half (char **str, int *internal_fixup_p)
   else
     *internal_fixup_p = 1;
 
-  /* Avoid parsing a register as a general symbol.  */
-  saved = p;
-  if (aarch64_reg_parse_32_64 (&p, 0, 0, &dummy, &dummy) != PARSE_FAIL)
-    return FALSE;
-  p = saved;
-
   if (! my_get_expression (&inst.reloc.exp, &p, GE_NO_PREFIX, 1))
     return FALSE;
 
diff --git a/gas/testsuite/gas/aarch64/movw_label.d b/gas/testsuite/gas/aarch64/movw_label.d
new file mode 100644
index 0000000..78ef63f
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/movw_label.d
@@ -0,0 +1,22 @@
+#objdump: -dr
+#name: movw relocation symbol name
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+0000000000000000 <.*>:
+   0:	f2800002 	movk	x2, #0x0
+			0: R_AARCH64_MOVW_UABS_G0_NC	x3.22
+   4:	f2800002 	movk	x2, #0x0
+			4: R_AARCH64_MOVW_UABS_G0_NC	x8
+   8:	f2800002 	movk	x2, #0x0
+			8: R_AARCH64_MOVW_UABS_G0_NC	w3
+   c:	f2800002 	movk	x2, #0x0
+			c: R_AARCH64_MOVW_UABS_G0_NC	w8.22
+  10:	f2800002 	movk	x2, #0x0
+			10: R_AARCH64_MOVW_UABS_G0_NC	sp
+  14:	f2800002 	movk	x2, #0x0
+			14: R_AARCH64_MOVW_UABS_G0_NC	wzr
+  18:	f2800002 	movk	x2, #0x0
+			18: R_AARCH64_MOVW_UABS_G0_NC	xzr
diff --git a/gas/testsuite/gas/aarch64/movw_label.s b/gas/testsuite/gas/aarch64/movw_label.s
new file mode 100644
index 0000000..6e7bae5
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/movw_label.s
@@ -0,0 +1,10 @@
+	.text
+	movk x2, #:abs_g0_nc: x3.22
+	movk x2, #:abs_g0_nc: x8
+
+	movk x2, #:abs_g0_nc: w3
+	movk x2, #:abs_g0_nc: w8.22
+
+	movk x2, #:abs_g0_nc: sp
+	movk x2, #:abs_g0_nc: wzr
+	movk x2, #:abs_g0_nc: xzr