Two more caveats in common/jmp.S..
diff --git a/common/jmp.S b/common/jmp.S
index 3bc8c94..a446d78 100644
--- a/common/jmp.S
+++ b/common/jmp.S
@@ -18,7 +18,13 @@
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA. */
-#define _SV save %sp, -0x40, %sp
+#if __WORDSIZE == 32
+# define STACK_BIAS 0
+#else
+# define STACK_BIAS 2047
+#endif
+
+#define _SV save %sp, -STACK_BIAS-0x40, %sp
#define _RV restore
#define FLUSH_ALL_WINDOWS \
_SV; _SV; _SV; _SV; _SV; _SV; _SV; \
@@ -46,7 +52,7 @@ __longjmp:
FLUSH_ALL_WINDOWS
ld [%o0], %o7 /* Return PC. */
ld [%o0 + 4], %fp /* Saved SP. */
#if __WORDSIZE == 32
ld [%o0], %o7 /* Return PC. */
ld [%o0 + 4], %fp /* Saved SP. */
#else
ldx [%o0], %o7 /* Return PC. */
ldx [%o0 + 8], %fp /* Saved SP. */
#endif
and also in the corresponding stores in setjmp:
#if __WORDSIZE == 32
st %o7, [%o0]
st %sp, [%o0 + 4]
#else
stx %o7, [%o0]
stx %sp, [%o0 + 8]
#endif
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