diff options
| -rw-r--r-- | packages/linux/nslu2-kernel/2.6/thumb-swi.patch | 19 | ||||
| -rw-r--r-- | packages/linux/nslu2-kernel_2.6.12.2.bb | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/packages/linux/nslu2-kernel/2.6/thumb-swi.patch b/packages/linux/nslu2-kernel/2.6/thumb-swi.patch new file mode 100644 index 0000000000..2e73bb103f --- /dev/null +++ b/packages/linux/nslu2-kernel/2.6/thumb-swi.patch @@ -0,0 +1,19 @@ +# This patch changes the thumb swi handling for any thumb swi with +# an immediate value != 0, those swis are mapped into the arm +# specific swis. This implements a thumb breakpoint swi. +--- linux-2.6.12.2/arch/arm/kernel/entry-common.S.orig 2005-09-19 12:48:42.323365573 -0700 ++++ linux-2.6.12.2/arch/arm/kernel/entry-common.S 2005-09-19 13:31:19.004247358 -0700 +@@ -137,8 +137,11 @@ + */ + #ifdef CONFIG_ARM_THUMB + tst r8, #PSR_T_BIT @ this is SPSR from save_user_regs +- addne scno, r7, #__NR_SYSCALL_BASE @ put OS number in +- ldreq scno, [lr, #-4] ++ ldrneh ip, [lr, #-2] @ thumb swi instruction ++ ldreq scno, [lr, #-4] @ arm swi instruction ++ addne scno, r7, #__NR_SYSCALL_BASE @ put OS number in to thumb r7 value ++ bicnes ip, ip, #0xff00 @ clear thumb swi bits ++ addne scno, ip, #__ARM_NR_BASE @ thumb swi0->r7, swi!0->arm swi + #else + ldr scno, [lr, #-4] @ get SWI instruction + #endif diff --git a/packages/linux/nslu2-kernel_2.6.12.2.bb b/packages/linux/nslu2-kernel_2.6.12.2.bb index e574f86d56..7e1a6f293d 100644 --- a/packages/linux/nslu2-kernel_2.6.12.2.bb +++ b/packages/linux/nslu2-kernel_2.6.12.2.bb @@ -25,4 +25,5 @@ N2K_PATCHES = "\ file://timer.patch;patch=1 \ file://nslu2-io_rpbutton.patch;patch=1 \ file://disk_led_blinking.patch;patch=1 \ + file://thumb-swi.patch;patch=1 \ " |