diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-05-29 23:12:51 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-07-23 01:10:43 -0400 |
| commit | fb1d9be5967fff0a3c93b06304fd992e3c438b7f (patch) | |
| tree | 0c1c8a2fe6ad2b9c52bdc4a58e0f396058dc75c3 /arch/blackfin/mach-bf561 | |
| parent | 072a5cff2fcaa4648c98bea6d549fac7ee4174fe (diff) | |
| download | op-kernel-dev-fb1d9be5967fff0a3c93b06304fd992e3c438b7f.zip op-kernel-dev-fb1d9be5967fff0a3c93b06304fd992e3c438b7f.tar.gz | |
Blackfin: optimize double fault boot checking
This moves the double fault data used at boot time into a single struct
which can then easily be addressed with indexed loads rather than having
to explicitly load multiple addresses.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf561')
| -rw-r--r-- | arch/blackfin/mach-bf561/secondary.S | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/arch/blackfin/mach-bf561/secondary.S b/arch/blackfin/mach-bf561/secondary.S index 348c919..01e5408 100644 --- a/arch/blackfin/mach-bf561/secondary.S +++ b/arch/blackfin/mach-bf561/secondary.S @@ -76,37 +76,25 @@ ENTRY(_coreb_trampoline_start) SSYNC; /* in case of double faults, save a few things */ - p0.l = _init_retx_coreb; - p0.h = _init_retx_coreb; - R0 = RETX; - [P0] = R0; - + p1.l = _initial_pda_coreb; + p1.h = _initial_pda_coreb; + r4 = RETX; #ifdef CONFIG_DEBUG_DOUBLEFAULT /* Only save these if we are storing them, * This happens here, since L1 gets clobbered * below */ GET_PDA(p0, r0); - r5 = [p0 + PDA_DF_RETX]; - p1.l = _init_saved_retx_coreb; - p1.h = _init_saved_retx_coreb; - [p1] = r5; - - r5 = [p0 + PDA_DF_DCPLB]; - p1.l = _init_saved_dcplb_fault_addr_coreb; - p1.h = _init_saved_dcplb_fault_addr_coreb; - [p1] = r5; - - r5 = [p0 + PDA_DF_ICPLB]; - p1.l = _init_saved_icplb_fault_addr_coreb; - p1.h = _init_saved_icplb_fault_addr_coreb; - [p1] = r5; - - r5 = [p0 + PDA_DF_SEQSTAT]; - p1.l = _init_saved_seqstat_coreb; - p1.h = _init_saved_seqstat_coreb; - [p1] = r5; + r0 = [p0 + PDA_DF_RETX]; + r1 = [p0 + PDA_DF_DCPLB]; + r2 = [p0 + PDA_DF_ICPLB]; + r3 = [p0 + PDA_DF_SEQSTAT]; + [p1 + PDA_INIT_DF_RETX] = r0; + [p1 + PDA_INIT_DF_DCPLB] = r1; + [p1 + PDA_INIT_DF_ICPLB] = r2; + [p1 + PDA_INIT_DF_SEQSTAT] = r3; #endif + [p1 + PDA_INIT_RETX] = r4; /* Initialize stack pointer */ sp.l = lo(INITIAL_STACK); |
