[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 --git a/gas/ChangeLog b/gas/ChangeLog
index c4bd331..f018268 100644 (file)
--- 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 (file)
--- 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 (file)
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 (file)
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