elf.h: Use __ARM_ARCH_ISA_THUMB and __ARM_ARCH_ISA_ARM to decide whether to prevent...

2016-07-07  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/elf.h: Use __ARM_ARCH_ISA_THUMB and __ARM_ARCH_ISA_ARM to
    decide whether to prevent some libgcc routines being included for some
    multilibs rather than __ARM_ARCH_6M__ and add comment to indicate the
    link between this condition and the one in
    libgcc/config/arm/lib1func.S.

    gcc/testsuite/
    * lib/target-supports.exp (check_effective_target_arm_cortex_m): Use
    __ARM_ARCH_ISA_ARM to test for Cortex-M devices.

    libgcc/
    * config/arm/bpabi-v6m.S: Clarify what architectures is the
    implementation suitable for.
    * config/arm/lib1funcs.S (__prefer_thumb__): Define among other cases
    for all Thumb-1 only targets.
    (NOT_ISA_TARGET_32BIT): Define for Thumb-1 only targets.
    (THUMB_LDIV0): Test for NOT_ISA_TARGET_32BIT rather than
    __ARM_ARCH_6M__.
    (EQUIV): Likewise.
    (ARM_FUNC_ALIAS): Likewise.
    (umodsi3): Add check to __ARM_ARCH_ISA_THUMB != 1 to guard the idiv
    version.
    (modsi3): Likewise.
    (clzsi2): Test for NOT_ISA_TARGET_32BIT rather than __ARM_ARCH_6M__.
    (clzdi2): Likewise.
    (ctzsi2): Likewise.
    (L_interwork_call_via_rX): Test for __ARM_ARCH_ISA_ARM rather than
    __ARM_ARCH_6M__ in guard for checking whether it is defined.
    (final includes): Test for NOT_ISA_TARGET_32BIT rather than
    __ARM_ARCH_6M__ and add comment to indicate the connection between
    this condition and the one in gcc/config/arm/elf.h.
    * config/arm/libunwind.S: Test for __ARM_ARCH_ISA_THUMB and
    __ARM_ARCH_ISA_ARM rather than __ARM_ARCH_6M__.
    * config/arm/t-softfp: Likewise.

From-SVN: r238079

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4fa2c4dcee4d1414df8cc5735ed90768cb9c24d1..7273e76fbf396df0a20dcd259b3cd67df305d3a7 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2016-07-07  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+       * config/arm/elf.h: Use __ARM_ARCH_ISA_THUMB and __ARM_ARCH_ISA_ARM to
+       decide whether to prevent some libgcc routines being included for some
+       multilibs rather than __ARM_ARCH_6M__ and add comment to indicate the
+       link between this condition and the one in
+       libgcc/config/arm/lib1func.S.
+
 2016-07-07  Richard Biener  <rguenther@suse.de>
 
        * tree-ssa-pre.c: Include alias.h.

diff --git a/gcc/config/arm/elf.h b/gcc/config/arm/elf.h
index 77f30554d5286bd83aeab0c8dc308cfd44e732dc..246de5492665ba2a0292736a9c53fbaaef184d72 100644 (file)
--- a/gcc/config/arm/elf.h
+++ b/gcc/config/arm/elf.h
@@ -148,8 +148,9 @@
   while (0)
 
 /* Horrible hack: We want to prevent some libgcc routines being included
-   for some multilibs.  */
-#ifndef __ARM_ARCH_6M__
+   for some multilibs.  The condition should match the one in
+   libgcc/config/arm/lib1funcs.S.  */
+#if __ARM_ARCH_ISA_ARM || __ARM_ARCH_ISA_THUMB != 1
 #undef L_fixdfsi
 #undef L_fixunsdfsi
 #undef L_truncdfsf2

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ad8cf4a8fa32c7c62b8238e3f6ccc78c39c35fc2..fa8438231152fe416b99b71ae7677ae9ccd0aa8e 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-07  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+       * lib/target-supports.exp (check_effective_target_arm_cortex_m): Use
+       __ARM_ARCH_ISA_ARM to test for Cortex-M devices.
+
 2016-07-06  Segher Boessenkool  <segher@kernel.crashing.org>
 
        PR target/70098

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 4ef52ace37b8f11c2ea036e4bdd655ef1a6aef59..0e294c5581eeb8730a31f1e748796f989cde36cf 100644 (file)
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -3476,10 +3476,8 @@ proc check_effective_target_arm_cortex_m { } {
        return 0
     }
     return [check_no_compiler_messages arm_cortex_m assembly {
-       #if !defined(__ARM_ARCH_7M__) \
-            && !defined (__ARM_ARCH_7EM__) \
-            && !defined (__ARM_ARCH_6M__)
-       #error !__ARM_ARCH_7M__ && !__ARM_ARCH_7EM__ && !__ARM_ARCH_6M__
+       #if defined(__ARM_ARCH_ISA_ARM)
+       #error __ARM_ARCH_ISA_ARM is defined
        #endif
        int i;
     } "-mthumb"]

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index ca000335e9f8ab92a80f55603ddab2dc729db11e..5f44923beac28f3eedc06d47d715a775d6b5faa7 100644 (file)
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,29 @@
+2016-07-07  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+       * config/arm/bpabi-v6m.S: Clarify what architectures is the
+       implementation suitable for.
+       * config/arm/lib1funcs.S (__prefer_thumb__): Define among other cases
+       for all Thumb-1 only targets.
+       (NOT_ISA_TARGET_32BIT): Define for Thumb-1 only targets.
+       (THUMB_LDIV0): Test for NOT_ISA_TARGET_32BIT rather than
+       __ARM_ARCH_6M__.
+       (EQUIV): Likewise.
+       (ARM_FUNC_ALIAS): Likewise.
+       (umodsi3): Add check to __ARM_ARCH_ISA_THUMB != 1 to guard the idiv
+       version.
+       (modsi3): Likewise.
+       (clzsi2): Test for NOT_ISA_TARGET_32BIT rather than __ARM_ARCH_6M__.
+       (clzdi2): Likewise.
+       (ctzsi2): Likewise.
+       (L_interwork_call_via_rX): Test for __ARM_ARCH_ISA_ARM rather than
+       __ARM_ARCH_6M__ in guard for checking whether it is defined.
+       (final includes): Test for NOT_ISA_TARGET_32BIT rather than
+       __ARM_ARCH_6M__ and add comment to indicate the connection between
+       this condition and the one in gcc/config/arm/elf.h.
+       * config/arm/libunwind.S: Test for __ARM_ARCH_ISA_THUMB and
+       __ARM_ARCH_ISA_ARM rather than __ARM_ARCH_6M__.
+       * config/arm/t-softfp: Likewise.
+
 2016-07-06  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
        * libgcc2.c (SYMBOL__MAIN): Remove checks for

diff --git a/libgcc/config/arm/bpabi-v6m.S b/libgcc/config/arm/bpabi-v6m.S
index 5d35aa6afca224613c94cf923f8a2ee8dac949f2..27f33a4e8ced2cb2da8e38f5d78501954ee7363b 100644 (file)
--- a/libgcc/config/arm/bpabi-v6m.S
+++ b/libgcc/config/arm/bpabi-v6m.S
@@ -1,4 +1,5 @@
-/* Miscellaneous BPABI functions.  ARMv6M implementation
+/* Miscellaneous BPABI functions.  Thumb-1 implementation, suitable for ARMv4T,
+   ARMv6-M and ARMv8-M Baseline like ISA variants.
 
    Copyright (C) 2006-2016 Free Software Foundation, Inc.
    Contributed by CodeSourcery.

diff --git a/libgcc/config/arm/lib1funcs.S b/libgcc/config/arm/lib1funcs.S
index 375a5135110895faa44267ebee045fd315515027..951dcda1c3bf7f323423a3e2813bdf0501653016 100644 (file)
--- a/libgcc/config/arm/lib1funcs.S
+++ b/libgcc/config/arm/lib1funcs.S
@@ -124,10 +124,14 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      && !defined(__thumb2__)           \
      && (!defined(__THUMB_INTERWORK__) \
         || defined (__OPTIMIZE_SIZE__) \
-        || defined(__ARM_ARCH_6M__)))
+        || !__ARM_ARCH_ISA_ARM))
 # define __prefer_thumb__
 #endif
 
+#if !__ARM_ARCH_ISA_ARM && __ARM_ARCH_ISA_THUMB == 1
+#define NOT_ISA_TARGET_32BIT 1
+#endif
+
 /* How to return from a function call depends on the architecture variant.  */
 
 #if (__ARM_ARCH__ > 4) || defined(__ARM_ARCH_4T__)
@@ -305,7 +309,7 @@ LSYM(Lend_fde):
 
 #ifdef __ARM_EABI__
 .macro THUMB_LDIV0 name signed
-#if defined(__ARM_ARCH_6M__)
+#ifdef NOT_ISA_TARGET_32BIT
        .ifc \signed, unsigned
        cmp     r0, #0
        beq     1f
@@ -478,7 +482,7 @@ _L__\name:
 
 #else /* !(__INTERWORKING_STUBS__ || __thumb2__) */
 
-#ifdef __ARM_ARCH_6M__
+#ifdef NOT_ISA_TARGET_32BIT
 #define EQUIV .thumb_set
 #else
 .macro ARM_FUNC_START name sp_section=
@@ -510,7 +514,7 @@ SYM (__\name):
 #endif
 .endm
 
-#ifndef __ARM_ARCH_6M__
+#ifndef NOT_ISA_TARGET_32BIT
 .macro ARM_FUNC_ALIAS new old
        .globl  SYM (__\new)
        EQUIV   SYM (__\new), SYM (__\old)
@@ -1054,7 +1058,7 @@ ARM_FUNC_START aeabi_uidivmod
 /* ------------------------------------------------------------------------ */
 #ifdef L_umodsi3
 
-#ifdef __ARM_ARCH_EXT_IDIV__
+#if defined(__ARM_ARCH_EXT_IDIV__) && __ARM_ARCH_ISA_THUMB != 1
 
        ARM_FUNC_START umodsi3
 
@@ -1240,7 +1244,7 @@ ARM_FUNC_START aeabi_idivmod
 /* ------------------------------------------------------------------------ */
 #ifdef L_modsi3
 
-#if defined(__ARM_ARCH_EXT_IDIV__)
+#if defined(__ARM_ARCH_EXT_IDIV__) && __ARM_ARCH_ISA_THUMB != 1
 
        ARM_FUNC_START modsi3
 
@@ -1515,7 +1519,7 @@ LSYM(Lover12):
 #endif
 
 #ifdef L_clzsi2
-#if defined(__ARM_ARCH_6M__)
+#ifdef NOT_ISA_TARGET_32BIT
 FUNC_START clzsi2
        mov     r1, #28
        mov     r3, #1
@@ -1576,7 +1580,7 @@ ARM_FUNC_START clzsi2
 #ifdef L_clzdi2
 #if !defined(HAVE_ARM_CLZ)
 
-# if defined(__ARM_ARCH_6M__)
+# ifdef NOT_ISA_TARGET_32BIT
 FUNC_START clzdi2
        push    {r4, lr}
 # else
@@ -1601,7 +1605,7 @@ ARM_FUNC_START clzdi2
        bl      __clzsi2
 # endif
 2:
-# if defined(__ARM_ARCH_6M__)
+# ifdef NOT_ISA_TARGET_32BIT
        pop     {r4, pc}
 # else
        RETLDM  r4
@@ -1623,7 +1627,7 @@ ARM_FUNC_START clzdi2
 #endif /* L_clzdi2 */
 
 #ifdef L_ctzsi2
-#if defined(__ARM_ARCH_6M__)
+#ifdef NOT_ISA_TARGET_32BIT
 FUNC_START ctzsi2
        neg     r1, r0
        and     r0, r0, r1
@@ -1738,7 +1742,7 @@ ARM_FUNC_START ctzsi2
 
 /* Don't bother with the old interworking routines for Thumb-2.  */
 /* ??? Maybe only omit these on "m" variants.  */
-#if !defined(__thumb2__) && !defined(__ARM_ARCH_6M__)
+#if !defined(__thumb2__) && __ARM_ARCH_ISA_ARM
 
 #if defined L_interwork_call_via_rX
 
@@ -1983,11 +1987,12 @@ LSYM(Lchange_\register):
 .endm
 
 #ifndef __symbian__
-#ifndef __ARM_ARCH_6M__
+/* The condition here must match the one in gcc/config/arm/elf.h.  */
+#ifndef NOT_ISA_TARGET_32BIT
 #include "ieee754-df.S"
 #include "ieee754-sf.S"
 #include "bpabi.S"
-#else /* __ARM_ARCH_6M__ */
+#else /* NOT_ISA_TARGET_32BIT */
 #include "bpabi-v6m.S"
-#endif /* __ARM_ARCH_6M__ */
+#endif /* NOT_ISA_TARGET_32BIT */
 #endif /* !__symbian__ */

diff --git a/libgcc/config/arm/libunwind.S b/libgcc/config/arm/libunwind.S
index a68b10ddce93d230c504f3747dcad3832d9f753c..3d7e70181fa80fe53a4903c96bb0f90480feee21 100644 (file)
--- a/libgcc/config/arm/libunwind.S
+++ b/libgcc/config/arm/libunwind.S
@@ -58,7 +58,7 @@
 #endif
 #endif
 
-#ifdef __ARM_ARCH_6M__
+#if !__ARM_ARCH_ISA_ARM && __ARM_ARCH_ISA_THUMB == 1
 
 /* r0 points to a 16-word block.  Upload these values to the actual core
    state.  */
@@ -169,7 +169,7 @@ FUNC_START gnu_Unwind_Save_WMMXC
        UNPREFIX \name
 .endm
 
-#else /* !__ARM_ARCH_6M__ */
+#else /* __ARM_ARCH_ISA_ARM || __ARM_ARCH_ISA_THUMB != 1 */
 
 /* r0 points to a 16-word block.  Upload these values to the actual core
    state.  */
@@ -351,7 +351,7 @@ ARM_FUNC_START gnu_Unwind_Save_WMMXC
        UNPREFIX \name
 .endm
 
-#endif /* !__ARM_ARCH_6M__ */
+#endif /* __ARM_ARCH_ISA_ARM || __ARM_ARCH_ISA_THUMB != 1 */
 
 UNWIND_WRAPPER _Unwind_RaiseException 1
 UNWIND_WRAPPER _Unwind_Resume 1

diff --git a/libgcc/config/arm/t-softfp b/libgcc/config/arm/t-softfp
index 4ede438baf6a297737e52db00395f6c3a359f681..554ec9bc47b04445e79e84b1f957bf88680c08d1 100644 (file)
--- a/libgcc/config/arm/t-softfp
+++ b/libgcc/config/arm/t-softfp
@@ -1,2 +1,2 @@
-softfp_wrap_start := '\#ifdef __ARM_ARCH_6M__'
+softfp_wrap_start := '\#if !__ARM_ARCH_ISA_ARM && __ARM_ARCH_ISA_THUMB == 1'
 softfp_wrap_end := '\#endif'