@@ -3682,6 +3682,12 @@ arm_option_override (void)
arm_pic_register = FDPIC_REGNUM;
if (TARGET_THUMB1)
sorry ("FDPIC mode is not supported in Thumb-1 mode");
+
+ /* FDPIC code is a special form of PIC, and the vast majority of code
+ generation constraints that apply to PIC also apply to FDPIC, so we
+ set flag_pic to avoid the need to check TARGET_FDPIC everywhere
+ flag_pic is checked. */
+ flag_pic = 2;
}
if (arm_pic_register_string != NULL)
new file mode 100644
@@ -0,0 +1,30 @@
+// { dg-do compile }
+// { dg-options "-O2 -fno-pic -mfdpic" }
+// { dg-skip-if "-mpure-code and -fPIC incompatible" { *-*-* } { "-mpure-code" } }
+
+__attribute__((visibility("hidden"))) void hidden_fun(void);
+void fun(void);
+__attribute__((visibility("hidden"))) extern int hidden_var;
+extern int var;
+__attribute__((visibility("hidden"))) const int ro_hidden_var = 42;
+
+// { dg-final { scan-assembler "hidden_fun\\(GOTOFFFUNCDESC\\)" } }
+void *addr_hidden_fun(void) { return hidden_fun; }
+
+// { dg-final { scan-assembler "fun\\(GOTFUNCDESC\\)" } }
+void *addr_fun(void) { return fun; }
+
+// { dg-final { scan-assembler "hidden_var\\(GOT\\)" } }
+void *addr_hidden_var(void) { return &hidden_var; }
+
+// { dg-final { scan-assembler "var\\(GOT\\)" } }
+void *addr_var(void) { return &var; }
+
+// { dg-final { scan-assembler ".LANCHOR0\\(GOT\\)" } }
+const int *addr_ro_hidden_var(void) { return &ro_hidden_var; }
+
+// { dg-final { scan-assembler "hidden_var\\(GOT\\)" } }
+int read_hidden_var(void) { return hidden_var; }
+
+// { dg-final { scan-assembler "var\\(GOT\\)" } }
+int read_var(void) { return var; }
From: Fangrui Song <maskray@gcc.gnu.org> -fno-pic -mfdpic generated code is like regular -fno-pic, not suitable for FDPIC (absolute addressing for symbol references and no function descriptor). The sh port simply upgrades -fno-pic to -fpie by setting flag_pic. Let's follow suit. Link: https://inbox.sourceware.org/gcc-patches/20150913165303.GC17773@brightrain.aerifal.cx/ gcc/ChangeLog: * config/arm/arm.cc (arm_option_override): Set flag_pic if TARGET_FDPIC. gcc/testsuite/ChangeLog: * gcc.target/arm/fdpic-pie.c: New test. --- gcc/config/arm/arm.cc | 6 +++++ gcc/testsuite/gcc.target/arm/fdpic-pie.c | 30 ++++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 gcc/testsuite/gcc.target/arm/fdpic-pie.c