Make setjmp/longjmp calls always only use Thumb

The Cortex-M0+ doesn't support anything but Thumb mode, so ensure the setjmp.S file doesn't use the standard versions of the instructions.
earlephilhower · Feb 2, 2022 · c7d3669 · c7d3669
1 parent a76ef0a
commit c7d3669
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/patches/lib-setjmp-thumb.patch b/patches/lib-setjmp-thumb.patch
@@ -0,0 +1,13 @@
+diff --git a/newlib/libc/machine/arm/setjmp.S b/newlib/libc/machine/arm/setjmp.S
+index 21d6ff9e7..6e337842c 100644
+--- a/newlib/libc/machine/arm/setjmp.S
++++ b/newlib/libc/machine/arm/setjmp.S
+@@ -59,7 +59,7 @@
+
+        .syntax unified
+
+-#if __ARM_ARCH_ISA_THUMB == 1 && !__ARM_ARCH_ISA_ARM
++#if 1
+ /* ARMv6-M-like has to be implemented in Thumb mode.  */
+
+ .thumb