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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-11-23 09:32:52 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-12-03 13:17:08 +0100 |
| commit | 4bd4c9e1f9fad33b2ddf13e246326f16f22ccccd (patch) | |
| tree | c0a9eea940eed0257b300add42d6a93216e9992d /c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h | |
| parent | bsps/powerpc: Declare ppc_exc_handler_table (diff) | |
| download | rtems-4bd4c9e1f9fad33b2ddf13e246326f16f22ccccd.tar.bz2 | |
bsps/powerpc: Add PPC_EXC_CONFIG_USE_FIXED_HANDLER
In case a BSP enables this option, then fixed high level exception
handler will be used. For normal asynchronous exceptions this is
bsp_interrupt_dispatch() and for other exceptions this is the handler
from the read-only ppc_exc_handler_table. The global handler is
C_exception_handler(). This avoids some dependencies on valid
read-write data.
Diffstat (limited to 'c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h index ea5a3f9614..d4bbaf4fcc 100644 --- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h +++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h @@ -3,7 +3,7 @@ * * Modified and partially rewritten by Till Straumann, 2007-2008 * - * Modified by Sebastian Huber <sebastian.huber@embedded-brains.de>, 2008. + * Modified by Sebastian Huber <sebastian.huber@embedded-brains.de>, 2008-2012. * * Low-level assembly code for PPC exceptions (macros). * @@ -825,6 +825,8 @@ wrap_call_global_handler_\_FLVR: /* First parameter = exception frame pointer + FRAME_LINK_SPACE */ addi r3, FRAME_REGISTER, FRAME_LINK_SPACE +#ifndef PPC_EXC_CONFIG_USE_FIXED_HANDLER + /* Load global handler address */ LW SCRATCH_REGISTER_0, globalExceptHdl @@ -836,6 +838,13 @@ wrap_call_global_handler_\_FLVR: mtctr SCRATCH_REGISTER_0 bctrl +#else /* PPC_EXC_CONFIG_USE_FIXED_HANDLER */ + + /* Call fixed global handler */ + bl C_exception_handler + +#endif /* PPC_EXC_CONFIG_USE_FIXED_HANDLER */ + b wrap_handler_done_\_FLVR .endm |