[gcc r13-3647] arm: Allow to override location of .gnu.sgstubs section

[Torbjorn Svensson <azoff@gcc.gnu.org>]

https://gcc.gnu.org/g:d201bd1aab513266eb7f3adabfb3fafc6578228f

commit r13-3647-gd201bd1aab513266eb7f3adabfb3fafc6578228f
Author: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Date:   Wed Oct 19 11:31:33 2022 +0200

    arm: Allow to override location of .gnu.sgstubs section
    
    Depending on the DejaGNU board definition, the .gnu.sgstubs section
    might be placed on different locations in order to suit the target.
    With this patch, the start location of the section is overrideable
    from the board definition with the fallback of the previously
    hardcoded location.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/arm/cmse/bitfield-1.c: Use overridable location.
            * gcc.target/arm/cmse/bitfield-2.c: Likewise.
            * gcc.target/arm/cmse/bitfield-3.c: Likewise.
            * gcc.target/arm/cmse/cmse-20.c: Likewise.
            * gcc.target/arm/cmse/struct-1.c: Likewise.
            * gcc.target/arm/cmse/cmse.exp (cmse_sgstubs): New.
    
    Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>

Diff:
---
 gcc/testsuite/gcc.target/arm/cmse/bitfield-1.c |  2 +-
 gcc/testsuite/gcc.target/arm/cmse/bitfield-2.c |  2 +-
 gcc/testsuite/gcc.target/arm/cmse/bitfield-3.c |  2 +-
 gcc/testsuite/gcc.target/arm/cmse/cmse-20.c    |  2 +-
 gcc/testsuite/gcc.target/arm/cmse/cmse.exp     | 11 +++++++++++
 gcc/testsuite/gcc.target/arm/cmse/struct-1.c   |  2 +-
 6 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/gcc/testsuite/gcc.target/arm/cmse/bitfield-1.c b/gcc/testsuite/gcc.target/arm/cmse/bitfield-1.c
index 5685f744435..c1221bef29f 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/bitfield-1.c
+++ b/gcc/testsuite/gcc.target/arm/cmse/bitfield-1.c
@@ -1,5 +1,5 @@
 /* This test is executed only if the execution engine supports CMSE instructions.  */
-/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=0x00400000" } */
+/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=[cmse_sgstubs]" } */
 
 typedef struct
 {
diff --git a/gcc/testsuite/gcc.target/arm/cmse/bitfield-2.c b/gcc/testsuite/gcc.target/arm/cmse/bitfield-2.c
index 7a794d44644..79e9a3efc93 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/bitfield-2.c
+++ b/gcc/testsuite/gcc.target/arm/cmse/bitfield-2.c
@@ -1,5 +1,5 @@
 /* This test is executed only if the execution engine supports CMSE instructions.  */
-/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=0x00400000" } */
+/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=[cmse_sgstubs]" } */
 
 typedef struct
 {
diff --git a/gcc/testsuite/gcc.target/arm/cmse/bitfield-3.c b/gcc/testsuite/gcc.target/arm/cmse/bitfield-3.c
index 5875f8dff48..d621a802ee1 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/bitfield-3.c
+++ b/gcc/testsuite/gcc.target/arm/cmse/bitfield-3.c
@@ -1,5 +1,5 @@
 /* This test is executed only if the execution engine supports CMSE instructions.  */
-/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=0x00400000" } */
+/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=[cmse_sgstubs]" } */
 
 typedef struct
 {
diff --git a/gcc/testsuite/gcc.target/arm/cmse/cmse-20.c b/gcc/testsuite/gcc.target/arm/cmse/cmse-20.c
index 08e89bff637..bbea9358870 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/cmse-20.c
+++ b/gcc/testsuite/gcc.target/arm/cmse/cmse-20.c
@@ -1,5 +1,5 @@
 /* This test is executed only if the execution engine supports CMSE instructions.  */
-/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=0x00400000" } */
+/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=[cmse_sgstubs]" } */
 
 #include <arm_cmse.h>
 #include <stdlib.h>
diff --git a/gcc/testsuite/gcc.target/arm/cmse/cmse.exp b/gcc/testsuite/gcc.target/arm/cmse/cmse.exp
index 436dd71ef89..1df5d56c6d5 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/cmse.exp
+++ b/gcc/testsuite/gcc.target/arm/cmse/cmse.exp
@@ -44,6 +44,17 @@ if {[is-effective-target arm_cmse_hw]} then {
 set saved-lto_torture_options ${LTO_TORTURE_OPTIONS}
 set LTO_TORTURE_OPTIONS ""
 
+# Return the start address of the .gnu.sgstubs section.
+proc cmse_sgstubs {} {
+    # Allow to override the location of .gnu.sgstubs section.
+    set tboard [target_info name]
+    if {[board_info $tboard exists cmse_sgstubs]} {
+	return [board_info $tboard cmse_sgstubs]
+    }
+
+    return "0x00400000"
+}
+
 # These are for both baseline and mainline.
 gcc-dg-runtest [lsort [glob $srcdir/$subdir/*.c]] \
 	"" $DEFAULT_CFLAGS
diff --git a/gcc/testsuite/gcc.target/arm/cmse/struct-1.c b/gcc/testsuite/gcc.target/arm/cmse/struct-1.c
index 75a99f487e7..bebd059b13f 100644
--- a/gcc/testsuite/gcc.target/arm/cmse/struct-1.c
+++ b/gcc/testsuite/gcc.target/arm/cmse/struct-1.c
@@ -1,5 +1,5 @@
 /* This test is executed only if the execution engine supports CMSE instructions.  */
-/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=0x00400000" } */
+/* { dg-options "--save-temps -mcmse -Wl,--section-start,.gnu.sgstubs=[cmse_sgstubs]" } */
 
 typedef struct
 {