Make more macro checks ARMv8-M baseline proof.

Commit 69f4c4029183fb26d2fcae00790881620c1978a3 improved most
macro checks to be ARMv8-M baseline proof, but missed a few
occurrences which otherwise fail to build when using a CPU setting
such as cortex-m0 or cortex-m23. This patch brings the same
changes as the ones that were committed to libgloss at that time.

	newlib:
	* libc/sys/arm/crt0.S: Use THUMB1_ONLY rather than
	__ARM_ARCH_6M__.

diff --git a/newlib/libc/sys/arm/crt0.S b/newlib/libc/sys/arm/crt0.S
index 64d425900249609d86cd09fe638dc060e6af305b..8c9f7be38ef06484ad57de63b4b43b80b62abc12 100644 (file)
--- a/newlib/libc/sys/arm/crt0.S
+++ b/newlib/libc/sys/arm/crt0.S
@@ -85,7 +85,7 @@
 
        /*  Stack limit is at end of data.  */
        /*  Allow slop for stack overflow handling and small frames.  */
-#ifdef __ARM_ARCH_6M__
+#ifdef THUMB1_ONLY
        ldr     r0, .LC2
        adds    r0, #128
        adds    r0, #128
@@ -137,7 +137,7 @@
        beq     .LC27
 
        /*  Allow slop for stack overflow handling and small frames.  */
-#ifdef __ARM_ARCH_6M__
+#ifdef THUMB1_ONLY
        adds    r2, #128
        adds    r2, #128
        mov     sl, r2
@@ -164,7 +164,7 @@
 #ifdef __thumb2__
        it      eq
 #endif 
-#ifdef __ARM_ARCH_6M__
+#ifdef THUMB1_ONLY
        bne     .LC28
        ldr     r3, .LC0
 .LC28:
@@ -219,7 +219,7 @@
           this default 64k is enough for the program being executed.
           However, it ensures that this simple crt0 world will not
           immediately cause an overflow event:  */
-#ifdef __ARM_ARCH_6M__
+#ifdef THUMB1_ONLY
        movs    r2, #64
        lsls    r2, r2, #10
        subs    r2, r3, r2