From 6d9b9a67af7f49151191a4c7c406ca6be89855ec Mon Sep 17 00:00:00 2001 From: Will Newton Date: Wed, 25 Sep 2013 10:14:20 +0100 Subject: [PATCH] ARM: Allow building __longjmp as Thumb. Convert __longjmp code to allow building as Thumb. ports/ChangeLog.arm: 2013-10-04 Will Newton * sysdeps/arm/__longjmp.S (NO_THUMB): Remove define. (__longjmp): Use Thumb supported instructions. * sysdeps/unix/sysv/linux/arm/____longjmp_chk.S (NO_THUMB): Remove define. --- ports/ChangeLog.arm | 7 +++++++ ports/sysdeps/arm/__longjmp.S | 6 +++--- ports/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S | 2 -- 3 files changed, 10 insertions(+), 5 deletions(-) diff --git a/ports/ChangeLog.arm b/ports/ChangeLog.arm index 0724dbd9a0..3f47d5e3d4 100644 --- a/ports/ChangeLog.arm +++ b/ports/ChangeLog.arm @@ -1,3 +1,10 @@ +2013-10-04 Will Newton + + * sysdeps/arm/__longjmp.S (NO_THUMB): Remove define. + (__longjmp): Use Thumb supported instructions. + * sysdeps/unix/sysv/linux/arm/____longjmp_chk.S (NO_THUMB): + Remove define. + 2013-10-03 Will Newton * sysdeps/arm/__longjmp.S (__longjmp): Demangle fp, sp diff --git a/ports/sysdeps/arm/__longjmp.S b/ports/sysdeps/arm/__longjmp.S index 2b1f7f41c1..894c121c0f 100644 --- a/ports/sysdeps/arm/__longjmp.S +++ b/ports/sysdeps/arm/__longjmp.S @@ -16,8 +16,6 @@ License along with the GNU C Library. If not, see . */ -/* ??? Needs more rearrangement for the LDM to handle thumb mode. */ -#define NO_THUMB #include #include #include @@ -28,6 +26,7 @@ ENTRY (__longjmp) mov ip, r0 movs r0, r1 /* get the return value in place */ + it eq moveq r0, #1 /* can't let setjmp() return zero! */ #ifdef CHECK_SP @@ -44,7 +43,8 @@ ENTRY (__longjmp) #ifdef PTR_DEMANGLE PTR_DEMANGLE (fp, a4, a3, a2) ldr a4, [ip], #4 - PTR_DEMANGLE2 (sp, a4, a3) + PTR_DEMANGLE2 (a4, a4, a3) + mov sp, a4 ldr a4, [ip], #4 PTR_DEMANGLE2 (lr, a4, a3) #else diff --git a/ports/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S b/ports/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S index 6ee7a1aebd..6777ef646b 100644 --- a/ports/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S +++ b/ports/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S @@ -15,8 +15,6 @@ License along with the GNU C Library. If not, see . */ -/* ??? Needs more rearrangement for the LDM to handle thumb mode. */ -#define NO_THUMB #include .section .rodata.str1.1,"aMS",%progbits,1