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authorJohn Bowler <jbowler@nslu2-linux.org>2005-09-22 19:44:38 +0000
committerOpenEmbedded Project <openembedded-devel@lists.openembedded.org>2005-09-22 19:44:38 +0000
commit4ab3322bcc988a6a0c0c1d2236d73e20b01dcf2e (patch)
treecb8ec7dcda091bcbce203d551fb80f2e4132be3e /packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch
parentcd49c7be0f05ac20ec76176f921936b00e1b2e8f (diff)
uclibc_0.9.28: fix thumb support to allow thumb uclibc
This, together with the fixes in gcc and binutils, allows a system to be build with thumb libgcc and libuClibc (etc). ucslugc is changed to release 2 and to use thumb compilation of these modules.
Diffstat (limited to 'packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch')
-rw-r--r--packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch153
1 files changed, 153 insertions, 0 deletions
diff --git a/packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch b/packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch
new file mode 100644
index 0000000000..35e53caa5c
--- /dev/null
+++ b/packages/uclibc/uclibc-0.9.28/thumb-asm-swi.patch
@@ -0,0 +1,153 @@
+# WARNING: nasty hack. Because sysnum.h produces thumb syscall
+# numbers when compiled in thumb mode the arm assembler (which is arm
+# even in thumb mode) needs to write the OS syscall base back into
+# the swi calls. This is done here just by orring in the correct
+# value. This is a hack - it might be better to add a define to
+# sysnum.h to force it to output arm (not thumb) values on demand -
+# but this hack is fairly safe (rmk would have to change the syscall
+# base, this seems unlikely).
+#
+# The patch also fixes up the .align directives to '2' (i.e. a multiple
+# of 4) not '4' (a multiple of 16 - apparently an error since it seems
+# to be unnecessary, there is no advantage here in cache line alignment).
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/__longjmp.S uClibc-0.9.28/libc/sysdeps/linux/arm/__longjmp.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/__longjmp.S 2005-09-18 18:41:36.870986621 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/__longjmp.S 2005-09-18 19:01:26.741860474 -0700
+@@ -25,7 +25,7 @@
+
+ .global __longjmp
+ .type __longjmp,%function
+-.align 4
++.align 2
+ __longjmp:
+ mov ip, r0 /* save jmp_buf pointer */
+
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/bsd-_setjmp.S uClibc-0.9.28/libc/sysdeps/linux/arm/bsd-_setjmp.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/bsd-_setjmp.S 2005-09-18 18:41:36.870986621 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/bsd-_setjmp.S 2005-09-18 19:01:31.982190228 -0700
+@@ -27,7 +27,7 @@
+
+ .global _setjmp
+ .type _setjmp,%function
+-.align 4
++.align 2
+ _setjmp:
+ mov r1, #0
+ #ifdef __PIC__
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/bsd-setjmp.S uClibc-0.9.28/libc/sysdeps/linux/arm/bsd-setjmp.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/bsd-setjmp.S 2005-09-18 18:41:36.870986621 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/bsd-setjmp.S 2005-09-18 19:01:40.166705247 -0700
+@@ -27,7 +27,7 @@
+
+ .global setjmp
+ .type setjmp,%function
+-.align 4
++.align 2
+ setjmp:
+ mov r1, #1
+ #ifdef __PIC__
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/clone.S uClibc-0.9.28/libc/sysdeps/linux/arm/clone.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/clone.S 2005-09-18 18:41:36.870986621 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/clone.S 2005-09-18 19:01:45.427036258 -0700
+@@ -30,7 +30,7 @@
+ .text
+ .global __clone
+ .type __clone,%function
+-.align 4
++.align 2
+ __clone:
+ @ sanity check args
+ cmp r0, #0
+@@ -48,7 +48,7 @@
+ @ get flags
+ mov r0, r2
+ @ new sp is already in r1
+- swi __NR_clone
++ swi (__NR_clone | 0x900000)
+ movs a1, a1
+ blt __error
+ #if defined(__THUMB_INTERWORK__)
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/mmap64.S uClibc-0.9.28/libc/sysdeps/linux/arm/mmap64.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/mmap64.S 2005-09-18 18:41:36.874986873 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/mmap64.S 2005-09-18 19:02:03.692185612 -0700
+@@ -27,7 +27,7 @@
+ .text
+ .global mmap64
+ .type mmap64,%function
+-.align 4
++.align 2
+ mmap64:
+ stmfd sp!, {r4, r5, lr}
+ ldr r5, [sp, $16]
+@@ -40,7 +40,7 @@
+ movs ip, ip, lsr $12
+ bne .Linval @ check for overflow
+ mov ip, r0
+- swi __NR_mmap2
++ swi (__NR_mmap2 | 0x900000)
+ cmn r0, $4096
+ ldmccfd sp!, {r4, r5, pc}
+ cmn r0, $ENOSYS
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/setjmp.S uClibc-0.9.28/libc/sysdeps/linux/arm/setjmp.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/setjmp.S 2005-09-18 18:41:36.874986873 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/setjmp.S 2005-09-18 19:02:08.956516875 -0700
+@@ -24,7 +24,7 @@
+
+ .global __sigsetjmp
+ .type __sigsetjmp,%function
+-.align 4
++.align 2
+ __sigsetjmp:
+ /* Save registers */
+ #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/sigrestorer.S uClibc-0.9.28/libc/sysdeps/linux/arm/sigrestorer.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/sigrestorer.S 2005-09-18 18:41:36.874986873 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/sigrestorer.S 2005-09-18 19:02:18.041088531 -0700
+@@ -24,17 +24,17 @@
+
+ .global __default_sa_restorer
+ .type __default_sa_restorer,%function
+-.align 4
++.align 2
+ __default_sa_restorer:
+- swi __NR_sigreturn
++ swi (__NR_sigreturn | 0x900000)
+
+
+ #ifdef __NR_rt_sigreturn
+
+ .global __default_rt_sa_restorer
+ .type __default_rt_sa_restorer,%function
+-.align 4
++.align 2
+ __default_rt_sa_restorer:
+- swi __NR_rt_sigreturn
++ swi (__NR_rt_sigreturn | 0x900000)
+
+ #endif
+diff -u uClibc-0.9.28/libc/sysdeps/linux/arm/orig/vfork.S uClibc-0.9.28/libc/sysdeps/linux/arm/vfork.S
+--- uClibc-0.9.28/libc/sysdeps/linux/arm/orig/vfork.S 2005-09-18 18:41:36.874986873 -0700
++++ uClibc-0.9.28/libc/sysdeps/linux/arm/vfork.S 2005-09-18 19:02:23.561435905 -0700
+@@ -28,11 +28,11 @@
+ .text
+ .global vfork
+ .type vfork,%function
+-.align 4
++.align 2
+ vfork:
+
+ #ifdef __NR_vfork
+- swi __NR_vfork
++ swi (__NR_vfork | 0x900000)
+ cmn r0, #4096
+ #if defined(__THUMB_INTERWORK__)
+ bxcc lr
+@@ -47,7 +47,7 @@
+ #endif
+
+ /* If we don't have vfork, use fork. */
+- swi __NR_fork
++ swi (__NR_fork | 0x900000)
+ cmn r0, #4096
+
+ /* Syscal worked. Return to child/parent */