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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 12:50:36 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 13:22:08 +1100 |
| commit | e72915560b15f58c2ffe08144d9a7163daa18db4 (patch) | |
| tree | 1de6b15d58eb972d5aa3ac8e4920eef4ca40d5b1 /arch/powerpc/kernel/head_40x.S | |
| parent | db297c3b07af7856fb7c666fbc9792d8e37556be (diff) | |
| download | linux-e72915560b15f58c2ffe08144d9a7163daa18db4.tar.bz2 | |
powerpc/32: Set regs parameter in r3 in transfer_to_handler
All exception handlers take regs as first parameter.
Instead of setting r3 just before each call to a handler, set
it in transfer_to_handler.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f994a379bb895a2cbd518cb82460ad3f3d3ccdf5.1615552867.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/head_40x.S')
| -rw-r--r-- | arch/powerpc/kernel/head_40x.S | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S index 86883ccb3dc5..08563d4170c6 100644 --- a/arch/powerpc/kernel/head_40x.S +++ b/arch/powerpc/kernel/head_40x.S @@ -185,7 +185,6 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) #define CRITICAL_EXCEPTION(n, label, hdlr) \ START_EXCEPTION(n, label); \ CRITICAL_EXCEPTION_PROLOG label; \ - addi r3,r1,STACK_FRAME_OVERHEAD; \ EXC_XFER_TEMPLATE(hdlr, n+2, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \ crit_transfer_to_handler, ret_from_crit_exc) @@ -227,13 +226,11 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) /* 0x0600 - Alignment Exception */ START_EXCEPTION(0x0600, Alignment) EXCEPTION_PROLOG Alignment handle_dar_dsisr=1 - addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_STD(0x600, alignment_exception) /* 0x0700 - Program Exception */ START_EXCEPTION(0x0700, ProgramCheck) EXCEPTION_PROLOG ProgramCheck handle_dar_dsisr=1 - addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_STD(0x700, program_check_exception) EXCEPTION(0x0800, Trap_08, unknown_exception, EXC_XFER_STD) @@ -494,7 +491,6 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) /* continue normal handling for a critical exception... */ 2: mfspr r4,SPRN_DBSR stw r4,_ESR(r11) /* DebugException takes DBSR in _ESR */ - addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_TEMPLATE(DebugException, 0x2002, \ (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), \ crit_transfer_to_handler, ret_from_crit_exc) @@ -505,21 +501,18 @@ Decrementer: EXCEPTION_PROLOG Decrementer lis r0,TSR_PIS@h mtspr SPRN_TSR,r0 /* Clear the PIT exception */ - addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_LITE(0x1000, timer_interrupt) /* Fixed Interval Timer (FIT) Exception. (from 0x1010) */ __HEAD FITException: EXCEPTION_PROLOG FITException - addi r3,r1,STACK_FRAME_OVERHEAD; EXC_XFER_STD(0x1010, unknown_exception) /* Watchdog Timer (WDT) Exception. (from 0x1020) */ __HEAD WDTException: CRITICAL_EXCEPTION_PROLOG WDTException - addi r3,r1,STACK_FRAME_OVERHEAD; EXC_XFER_TEMPLATE(WatchdogException, 0x1020+2, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), crit_transfer_to_handler, ret_from_crit_exc) |