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authorRichard Sandiford <richard.sandiford@arm.com>2016-09-21 16:49:31 +0100
committerRichard Sandiford <richard.sandiford@arm.com>2016-09-21 16:49:31 +0100
commit73866052f244927457202e4b0d1542bea529878f (patch)
tree0f505bedda2de518422b06a8abe1589746398e85 /gas
parente1b988bba630c09564248ebb78cf29c70f2d04db (diff)
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[AArch64][SVE 12/32] Remove boolean parameters from parse_address_main
In the review of the original version of this series, Richard didn't like the use of boolean parameters to parse_address_main. I think we can just get rid of them and leave the callers to check the addressing modes. As it happens, the handling of ADDR_SIMM9{,_2} already did this for relocation operators (i.e. it used parse_address_reloc and then rejected relocations). The callers are already set up to reject invalid register post-indexed addressing, so we can simply remove the accept_reg_post_index parameter without adding any more checks. This again creates a corner case where: .equ x2, 1 ldr w0, [x1], x2 was previously an acceptable way of writing "ldr w0, [x1], #1" but is now rejected. Removing the "reloc" parameter means that two cases need to check explicitly for relocation operators. ADDR_SIMM9_2 appers to be unused. I'll send a separate patch to remove it. This patch makes parse_address temporarily equivalent to parse_address_main, but later patches in the series will need to keep the distinction. gas/ * config/tc-aarch64.c (parse_address_main): Remove reloc and accept_reg_post_index parameters. Parse relocations and register post indexes unconditionally. (parse_address): Remove accept_reg_post_index parameter. Update call to parse_address_main. (parse_address_reloc): Delete. (parse_operands): Call parse_address instead of parse_address_main. Update existing callers of parse_address and make them check inst.reloc.type where appropriate. * testsuite/gas/aarch64/diagnostic.s: Add tests for relocations in ADDR_SIMPLE, SIMD_ADDR_SIMPLE, ADDR_SIMM7 and ADDR_SIMM9 addresses. Also test for invalid uses of post-index register addressing. * testsuite/gas/aarch64/diagnostic.l: Update accordingly.
Diffstat (limited to 'gas')
-rw-r--r--gas/ChangeLog16
-rw-r--r--gas/config/tc-aarch64.c45
-rw-r--r--gas/testsuite/gas/aarch64/diagnostic.l8
-rw-r--r--gas/testsuite/gas/aarch64/diagnostic.s12
4 files changed, 57 insertions, 24 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index e56f239..d7df100 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,21 @@
2016-09-21 Richard Sandiford <richard.sandiford@arm.com>
+ * config/tc-aarch64.c (parse_address_main): Remove reloc and
+ accept_reg_post_index parameters. Parse relocations and register
+ post indexes unconditionally.
+ (parse_address): Remove accept_reg_post_index parameter.
+ Update call to parse_address_main.
+ (parse_address_reloc): Delete.
+ (parse_operands): Call parse_address instead of parse_address_main.
+ Update existing callers of parse_address and make them check
+ inst.reloc.type where appropriate.
+ * testsuite/gas/aarch64/diagnostic.s: Add tests for relocations
+ in ADDR_SIMPLE, SIMD_ADDR_SIMPLE, ADDR_SIMM7 and ADDR_SIMM9 addresses.
+ Also test for invalid uses of post-index register addressing.
+ * testsuite/gas/aarch64/diagnostic.l: Update accordingly.
+
+2016-09-21 Richard Sandiford <richard.sandiford@arm.com>
+
* config/tc-aarch64.c (REG_TYPE_R_Z, REG_TYPE_R_SP): New register
types.
(get_reg_expected_msg): Handle them and REG_TYPE_R64_SP.
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 7b5be8b..f82fdb9 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -3173,8 +3173,7 @@ parse_shifter_operand_reloc (char **str, aarch64_opnd_info *operand,
supported by the instruction, and to set inst.reloc.type. */
static bfd_boolean
-parse_address_main (char **str, aarch64_opnd_info *operand, int reloc,
- int accept_reg_post_index)
+parse_address_main (char **str, aarch64_opnd_info *operand)
{
char *p = *str;
const reg_entry *reg;
@@ -3190,7 +3189,7 @@ parse_address_main (char **str, aarch64_opnd_info *operand, int reloc,
/* #:<reloc_op>:<symbol> */
skip_past_char (&p, '#');
- if (reloc && skip_past_char (&p, ':'))
+ if (skip_past_char (&p, ':'))
{
bfd_reloc_code_real_type ty;
struct reloc_table_entry *entry;
@@ -3315,7 +3314,7 @@ parse_address_main (char **str, aarch64_opnd_info *operand, int reloc,
{
/* [Xn,#:<reloc_op>:<symbol> */
skip_past_char (&p, '#');
- if (reloc && skip_past_char (&p, ':'))
+ if (skip_past_char (&p, ':'))
{
struct reloc_table_entry *entry;
@@ -3388,8 +3387,8 @@ parse_address_main (char **str, aarch64_opnd_info *operand, int reloc,
return FALSE;
}
- if (accept_reg_post_index
- && (reg = aarch64_reg_parse_32_64 (&p, &offset_qualifier)))
+ reg = aarch64_reg_parse_32_64 (&p, &offset_qualifier);
+ if (reg)
{
/* [Xn],Xm */
if (!aarch64_check_reg_type (reg, REG_TYPE_R_64))
@@ -3428,19 +3427,12 @@ parse_address_main (char **str, aarch64_opnd_info *operand, int reloc,
return TRUE;
}
-/* Return TRUE on success; otherwise return FALSE. */
-static bfd_boolean
-parse_address (char **str, aarch64_opnd_info *operand,
- int accept_reg_post_index)
-{
- return parse_address_main (str, operand, 0, accept_reg_post_index);
-}
-
-/* Return TRUE on success; otherwise return FALSE. */
+/* Parse a base AArch64 address (as opposed to an SVE one). Return TRUE
+ on success. */
static bfd_boolean
-parse_address_reloc (char **str, aarch64_opnd_info *operand)
+parse_address (char **str, aarch64_opnd_info *operand)
{
- return parse_address_main (str, operand, 1, 0);
+ return parse_address_main (str, operand);
}
/* Parse an operand for a MOVZ, MOVN or MOVK instruction.
@@ -5419,7 +5411,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
case AARCH64_OPND_ADDR_PCREL19:
case AARCH64_OPND_ADDR_PCREL21:
case AARCH64_OPND_ADDR_PCREL26:
- po_misc_or_fail (parse_address_reloc (&str, info));
+ po_misc_or_fail (parse_address (&str, info));
if (!info->addr.pcrel)
{
set_syntax_error (_("invalid pc-relative address"));
@@ -5490,7 +5482,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
char *start = str;
/* First use the normal address-parsing routines, to get
the usual syntax errors. */
- po_misc_or_fail (parse_address (&str, info, 0));
+ po_misc_or_fail (parse_address (&str, info));
if (info->addr.pcrel || info->addr.offset.is_reg
|| !info->addr.preind || info->addr.postind
|| info->addr.writeback)
@@ -5521,7 +5513,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
case AARCH64_OPND_ADDR_REGOFF:
/* [<Xn|SP>, <R><m>{, <extend> {<amount>}}] */
- po_misc_or_fail (parse_address (&str, info, 0));
+ po_misc_or_fail (parse_address (&str, info));
if (info->addr.pcrel || !info->addr.offset.is_reg
|| !info->addr.preind || info->addr.postind
|| info->addr.writeback)
@@ -5540,13 +5532,18 @@ parse_operands (char *str, const aarch64_opcode *opcode)
break;
case AARCH64_OPND_ADDR_SIMM7:
- po_misc_or_fail (parse_address (&str, info, 0));
+ po_misc_or_fail (parse_address (&str, info));
if (info->addr.pcrel || info->addr.offset.is_reg
|| (!info->addr.preind && !info->addr.postind))
{
set_syntax_error (_("invalid addressing mode"));
goto failure;
}
+ if (inst.reloc.type != BFD_RELOC_UNUSED)
+ {
+ set_syntax_error (_("relocation not allowed"));
+ goto failure;
+ }
assign_imm_if_const_or_fixup_later (&inst.reloc, info,
/* addr_off_p */ 1,
/* need_libopcodes_p */ 1,
@@ -5555,7 +5552,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
case AARCH64_OPND_ADDR_SIMM9:
case AARCH64_OPND_ADDR_SIMM9_2:
- po_misc_or_fail (parse_address_reloc (&str, info));
+ po_misc_or_fail (parse_address (&str, info));
if (info->addr.pcrel || info->addr.offset.is_reg
|| (!info->addr.preind && !info->addr.postind)
|| (operands[i] == AARCH64_OPND_ADDR_SIMM9_2
@@ -5576,7 +5573,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
break;
case AARCH64_OPND_ADDR_UIMM12:
- po_misc_or_fail (parse_address_reloc (&str, info));
+ po_misc_or_fail (parse_address (&str, info));
if (info->addr.pcrel || info->addr.offset.is_reg
|| !info->addr.preind || info->addr.writeback)
{
@@ -5596,7 +5593,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
case AARCH64_OPND_SIMD_ADDR_POST:
/* [<Xn|SP>], <Xm|#<amount>> */
- po_misc_or_fail (parse_address (&str, info, 1));
+ po_misc_or_fail (parse_address (&str, info));
if (!info->addr.postind || !info->addr.writeback)
{
set_syntax_error (_("invalid addressing mode"));
diff --git a/gas/testsuite/gas/aarch64/diagnostic.l b/gas/testsuite/gas/aarch64/diagnostic.l
index ef23577..0fb4db9 100644
--- a/gas/testsuite/gas/aarch64/diagnostic.l
+++ b/gas/testsuite/gas/aarch64/diagnostic.l
@@ -150,3 +150,11 @@
[^:]*:264: Error: invalid floating-point constant at operand 2 -- `fmov s0,-2'
[^:]*:266: Error: integer 64-bit register expected at operand 2 -- `st2 {v0.4s,v1.4s},\[sp\],xzr'
[^:]*:267: Error: integer or zero register expected at operand 2 -- `str x1,\[x2,sp\]'
+[^:]*:270: Error: relocation not allowed at operand 3 -- `ldnp x1,x2,\[x3,#:lo12:foo\]'
+[^:]*:271: Error: invalid addressing mode at operand 2 -- `ld1 {v0\.4s},\[x3,#:lo12:foo\]'
+[^:]*:272: Error: the optional immediate offset can only be 0 at operand 2 -- `stuminl x0,\[x3,#:lo12:foo\]'
+[^:]*:273: Error: relocation not allowed at operand 2 -- `prfum pldl1keep,\[x3,#:lo12:foo\]'
+[^:]*:275: Error: invalid addressing mode at operand 2 -- `ldr x0,\[x3\],x4'
+[^:]*:276: Error: invalid addressing mode at operand 3 -- `ldnp x1,x2,\[x3\],x4'
+[^:]*:278: Error: invalid addressing mode at operand 2 -- `stuminl x0,\[x3\],x4'
+[^:]*:279: Error: invalid addressing mode at operand 2 -- `prfum pldl1keep,\[x3\],x4'
diff --git a/gas/testsuite/gas/aarch64/diagnostic.s b/gas/testsuite/gas/aarch64/diagnostic.s
index 8dbb542..a9cd124 100644
--- a/gas/testsuite/gas/aarch64/diagnostic.s
+++ b/gas/testsuite/gas/aarch64/diagnostic.s
@@ -265,3 +265,15 @@
st2 {v0.4s, v1.4s}, [sp], xzr
str x1, [x2, sp]
+
+ ldr x0, [x1, #:lo12:foo] // OK
+ ldnp x1, x2, [x3, #:lo12:foo]
+ ld1 {v0.4s}, [x3, #:lo12:foo]
+ stuminl x0, [x3, #:lo12:foo]
+ prfum pldl1keep, [x3, #:lo12:foo]
+
+ ldr x0, [x3], x4
+ ldnp x1, x2, [x3], x4
+ ld1 {v0.4s}, [x3], x4 // OK
+ stuminl x0, [x3], x4
+ prfum pldl1keep, [x3], x4