* gas/config/tc-arm.c (arm_ext_adiv): New variable.

	(do_div): New function.
	(insns): Accept UDIV and SDIV in ARM state.
	(arm_cpus): The cortex-a15 option has all current v7-A extensions.
	(arm_extensions): Add 'idiv' extension.
	(aeabi_set_public_attributes): Update Tag_DIV_use values for the
	Integer Divide extension.
	* gas/doc/c-arm.texi: Document the idiv extension.
	* gas/testsuite/gas/arm/armv7-a+idiv.d: New test.
	* gas/testsuite/gas/arm/armv7-a+idiv.s: Likewise.
	* gas/testsuite/gas/arm/attr-march-all.d: Update for Integer divide extension.
	* gas/testsuite/gas/arm/attr-march-armv7-a+idiv.d: New test.
	* include/opcode/arm.h (ARM_AEXT_ADIV): New define.
	(ARM_ARCH_V7A_IDIV_MP_SEC): Likewise.
	* opcodes/arm-dis.c (arm_opcodes): Support disassembly of UDIV and SDIV in
	ARM state.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 92a8b348cf3c135de485ea7c73389d2b267a38c5..d4d1e5c9f3dcc10d86910558d846d900e1bb04bd 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,14 @@
+2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+       * config/tc-arm.c (arm_ext_adiv): New variable.
+       (do_div): New function.
+       (insns): Accept UDIV and SDIV in ARM state.
+       (arm_cpus): The cortex-a15 option has all current v7-A extensions.
+       (arm_extensions): Add 'idiv' extension.
+       (aeabi_set_public_attributes): Update Tag_DIV_use values for the
+       Integer Divide extension.
+       * doc/c-arm.texi: Document the idiv extension.
+
 2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
        * config/tc-arm.c (arm_ext_v6m): New variable.

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 76013ed6d84bb5f40aa2008f04f2ea0560a29e26..886d92fa9c9cef656be3db96b1c400f72417f59a 100644 (file)
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -200,6 +200,7 @@ static const arm_feature_set arm_ext_m =
 static const arm_feature_set arm_ext_mp = ARM_FEATURE (ARM_EXT_MP, 0);
 static const arm_feature_set arm_ext_sec = ARM_FEATURE (ARM_EXT_SEC, 0);
 static const arm_feature_set arm_ext_os = ARM_FEATURE (ARM_EXT_OS, 0);
+static const arm_feature_set arm_ext_adiv = ARM_FEATURE (ARM_EXT_ADIV, 0);
 
 static const arm_feature_set arm_arch_any = ARM_ANY;
 static const arm_feature_set arm_arch_full = ARM_FEATURE (-1, -1);
@@ -7491,6 +7492,25 @@ do_dbg (void)
   inst.instruction |= inst.operands[0].imm;
 }
 
+static void
+do_div (void)
+{
+  unsigned Rd, Rn, Rm;
+
+  Rd = inst.operands[0].reg;
+  Rn = (inst.operands[1].present
+       ? inst.operands[1].reg : Rd);
+  Rm = inst.operands[2].reg;
+
+  constraint ((Rd == REG_PC), BAD_PC);
+  constraint ((Rn == REG_PC), BAD_PC);
+  constraint ((Rm == REG_PC), BAD_PC);
+
+  inst.instruction |= Rd << 16;
+  inst.instruction |= Rn << 0;
+  inst.instruction |= Rm << 8;
+}
+
 static void
 do_it (void)
 {
@@ -17130,12 +17150,14 @@ static const struct asm_opcode insns[] =
  TCE("tbb",       0, e8d0f000, 1, (TB), 0, t_tb),
  TCE("tbh",       0, e8d0f010, 1, (TB), 0, t_tb),
 
- /* Thumb-2 hardware division instructions (R and M profiles only).  */
+ /* Hardware division instructions.  */
+#undef  ARM_VARIANT
+#define ARM_VARIANT    & arm_ext_adiv
 #undef  THUMB_VARIANT
 #define THUMB_VARIANT  & arm_ext_div
 
- TCE("sdiv",   0, fb90f0f0, 3, (RR, oRR, RR), 0, t_div),
- TCE("udiv",   0, fbb0f0f0, 3, (RR, oRR, RR), 0, t_div),
+ TCE("sdiv",   710f010, fb90f0f0, 3, (RR, oRR, RR), div, t_div),
+ TCE("udiv",   730f010, fbb0f0f0, 3, (RR, oRR, RR), div, t_div),
 
  /* ARM V6M/V7 instructions.  */
 #undef  ARM_VARIANT
@@ -22408,8 +22430,8 @@ static const struct arm_cpu_option_table arm_cpus[] =
                                         ARM_FEATURE (0, FPU_VFP_V3
                                                         | FPU_NEON_EXT_V1),
                                                           "Cortex-A9"},
-  {"cortex-a15",       ARM_ARCH_V7A_MP_SEC,
-                                        FPU_ARCH_NEON_VFP_V4,
+  {"cortex-a15",       ARM_ARCH_V7A_IDIV_MP_SEC,
+                                        FPU_ARCH_NEON_VFP_V4,
                                                           "Cortex-A15"},
   {"cortex-r4",                ARM_ARCH_V7R,    FPU_NONE,        "Cortex-R4"},
   {"cortex-r4f",       ARM_ARCH_V7R,    FPU_ARCH_VFP_V3D16,
@@ -22496,6 +22518,8 @@ struct arm_option_extension_value_table
    */
 static const struct arm_option_extension_value_table arm_extensions[] =
 {
+  {"idiv",     ARM_FEATURE (ARM_EXT_ADIV | ARM_EXT_DIV, 0),
+                                  ARM_FEATURE (ARM_EXT_V7A, 0)},
   {"iwmmxt",   ARM_FEATURE (0, ARM_CEXT_IWMMXT),       ARM_ANY},
   {"iwmmxt2",  ARM_FEATURE (0, ARM_CEXT_IWMMXT2),      ARM_ANY},
   {"maverick", ARM_FEATURE (0, ARM_CEXT_MAVERICK),     ARM_ANY},
@@ -23177,11 +23201,10 @@ aeabi_set_public_attributes (void)
     aeabi_set_attribute_int (Tag_VFP_HP_extension, 1);
 
   /* Tag_DIV_use.  */
-  if (ARM_CPU_HAS_FEATURE (flags, arm_ext_div))
+  if (ARM_CPU_HAS_FEATURE (flags, arm_ext_adiv))
+    aeabi_set_attribute_int (Tag_DIV_use, 2);
+  else if (ARM_CPU_HAS_FEATURE (flags, arm_ext_div))
     aeabi_set_attribute_int (Tag_DIV_use, 0);
-  /* Fill this in when gas supports v7a sdiv/udiv.
-    else if (... v7a with div extension used ...)
-      aeabi_set_attribute_int (Tag_DIV_use, 2);  */
   else
     aeabi_set_attribute_int (Tag_DIV_use, 1);
 

diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index 0106a8d2ec79fd5b9b0e39b5ff3ba1ce64e7a844..2a5c351ddde30c0258afd369f0e3ac46e3c63327 100644 (file)
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -148,7 +148,8 @@ been added, again in ascending alphabetical order.  For example,
 @code{-mcpu=ep9312+nomaverick} is equivalent to specifying @code{-mcpu=arm920}.
 
 
-The following extensions are currently supported: 
+The following extensions are currently supported:
+@code{idiv}, (Integer Divide Extensions for v7-A architecture),
 @code{iwmmxt},
 @code{iwmmxt2},
 @code{maverick},

diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index e68f07006e689c4c3fcacefb57b807946999ab41..37f84172e3ea4c6d1acf1e875ee378d708e78fa4 100644 (file)
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+       * gas/arm/armv7-a+idiv.d: New test.
+       * gas/arm/armv7-a+idiv.s: Likewise.
+       * gas/arm/attr-march-all.d: Update for Integer divide extension.
+       * gas/arm/attr-march-armv7-a+idiv.d: New test.
+
 2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
        * gas/arm/archv6s-m-bad.d: New test.

diff --git a/gas/testsuite/gas/arm/armv7-a+idiv.d b/gas/testsuite/gas/arm/armv7-a+idiv.d
new file mode 100644 (file)
index 0000000..ba8a2a1
--- /dev/null
+++ b/gas/testsuite/gas/arm/armv7-a+idiv.d
@@ -0,0 +1,10 @@
+#name: Valid v7-A+IDIV
+#objdump: -dr --prefix-addresses --show-raw-insn
+
+.*: +file format .*arm.*
+
+Disassembly of section .text:
+0[0-9a-f]+ <[^>]+> e730f211    udiv    r0, r1, r2
+0[0-9a-f]+ <[^>]+> e710f211    sdiv    r0, r1, r2
+0[0-9a-f]+ <[^>]+> fbb1 f0f2   udiv    r0, r1, r2
+0[0-9a-f]+ <[^>]+> fb91 f0f2   sdiv    r0, r1, r2

diff --git a/gas/testsuite/gas/arm/armv7-a+idiv.s b/gas/testsuite/gas/arm/armv7-a+idiv.s
new file mode 100644 (file)
index 0000000..eaefde8
--- /dev/null
+++ b/gas/testsuite/gas/arm/armv7-a+idiv.s
@@ -0,0 +1,14 @@
+       .syntax unified
+       .text
+       .arch armv7-a
+       .arch_extension idiv
+
+foo:
+       udiv r0, r1, r2
+       sdiv r0, r1, r2
+
+       .thumb
+       .thumb_func
+bar:
+       udiv r0, r1, r2
+       sdiv r0, r1, r2

diff --git a/gas/testsuite/gas/arm/attr-march-all.d b/gas/testsuite/gas/arm/attr-march-all.d
index 2c29fff98f095af1425457a38814c7d2f402dc75..a976d04b8ff49b04d8d7ba0ed13ab66bcab7382f 100644 (file)
--- a/gas/testsuite/gas/arm/attr-march-all.d
+++ b/gas/testsuite/gas/arm/attr-march-all.d
@@ -13,4 +13,5 @@ File Attributes
   Tag_ARM_ISA_use: Yes
   Tag_THUMB_ISA_use: Thumb-2
   Tag_MPextension_use: Allowed
+  Tag_DIV_use: Allowed in v7-A with integer division extension
   Tag_Virtualization_use: TrustZone

diff --git a/gas/testsuite/gas/arm/attr-march-armv7-a+idiv.d b/gas/testsuite/gas/arm/attr-march-armv7-a+idiv.d
new file mode 100644 (file)
index 0000000..42ce50e
--- /dev/null
+++ b/gas/testsuite/gas/arm/attr-march-armv7-a+idiv.d
@@ -0,0 +1,15 @@
+# name: attributes for -march=armv7-a+idiv
+# source: blank.s
+# as: -march=armv7-a+idiv
+# readelf: -A
+# This test is only valid on EABI based ports.
+# target: *-*-*eabi
+
+Attribute Section: aeabi
+File Attributes
+  Tag_CPU_name: "7-A"
+  Tag_CPU_arch: v7
+  Tag_CPU_arch_profile: Application
+  Tag_ARM_ISA_use: Yes
+  Tag_THUMB_ISA_use: Thumb-2
+  Tag_DIV_use: Allowed in v7-A with integer division extension

diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 3e845da382f58e5ba3f3011a6fac1ba8eeb26a29..135a28fac4f5d17c29b2b07d7e5b59222187c140 100644 (file)
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+       
+       * arm.h (ARM_AEXT_ADIV): New define.
+       (ARM_ARCH_V7A_IDIV_MP_SEC): Likewise.
+
 2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
        * arm.h (ARM_EXT_OS): New define.

diff --git a/include/opcode/arm.h b/include/opcode/arm.h
index 4c9324d74be4b3e35aaf7c96d78bec7343cc1076..58cace8a35b3d2d3e707b53230bd0c66b590129f 100644 (file)
--- a/include/opcode/arm.h
+++ b/include/opcode/arm.h
@@ -52,6 +52,8 @@
 #define ARM_EXT_MP       0x08000000     /* Multiprocessing Extensions.  */
 #define ARM_EXT_SEC     0x10000000     /* Security extensions.  */
 #define ARM_EXT_OS      0x20000000     /* OS Extensions.  */
+#define ARM_EXT_ADIV    0x40000000     /* Integer divide extensions in ARM 
+                                          state.  */
 
 /* Co-processor space extensions.  */
 #define ARM_CEXT_XSCALE   0x00000001   /* Allow MIA etc.          */
@@ -220,6 +222,10 @@
 #define ARM_ARCH_V7A_MP_SEC \
                        ARM_FEATURE (ARM_AEXT_V7A | ARM_EXT_MP | ARM_EXT_SEC, \
                                     0)
+/* v7-a+idiv+mp+sec.  */
+#define ARM_ARCH_V7A_IDIV_MP_SEC \
+                       ARM_FEATURE (ARM_AEXT_V7A | ARM_EXT_MP | ARM_EXT_SEC \
+                                    | ARM_EXT_DIV | ARM_EXT_ADIV, 0)
 
 /* There are too many feature bits to fit in a single word, so use a
    structure.  For simplicity we put all core features in one word and

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 3dd84e4e9cca17d6447ce12f38a4c18f850dd681..fb6b01a6aa2fcb7b3d7bce2dafd3152da51760e5 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+       * arm-dis.c (arm_opcodes): Support disassembly of UDIV and SDIV in
+       ARM state.
+
 2010-09-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
        * arm-dis.c (arm_opcodes): SMC implies Security Extensions.

diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index 76a04e34d1756bcfd8784bf1204442fe9ed930d4..005c957aa0ce51595a3f8beed1652b0ca50a40cb 100644 (file)
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -829,6 +829,10 @@ static const struct opcode32 arm_opcodes[] =
   {ARM_EXT_V3M, 0x00800090, 0x0fa000f0, "%22?sumull%20's%c\t%12-15Ru, %16-19Ru, %0-3R, %8-11R"},
   {ARM_EXT_V3M, 0x00a00090, 0x0fa000f0, "%22?sumlal%20's%c\t%12-15Ru, %16-19Ru, %0-3R, %8-11R"},
 
+  /* Integer Divide Extension instructions.  */
+  {ARM_EXT_ADIV, 0x0710f010, 0x0ff0f0f0, "sdiv%c\t%16-19r, %0-3r, %8-11r"},
+  {ARM_EXT_ADIV, 0x0730f010, 0x0ff0f0f0, "udiv%c\t%16-19r, %0-3r, %8-11r"},
+
   /* MP Extension instructions.  */
   {ARM_EXT_MP, 0xf410f000, 0xfc70f000, "pldw\t%a"},