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| author |  Nicholas Piggin <npiggin@gmail.com>
| 2022-11-27 22:49:32 +1000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2022-12-02 17:54:08 +1100 |
| commit | c03be0a3f3cc656eab5c427b78959b8f1b169a11 (patch) | |
| tree | ea5a871e5ab66eb6f0d25a708e9e26206af9a692 /arch/powerpc/kernel/interrupt_64.S | |
| parent | powerpc: simplify ppc_save_regs (diff) | |
| download | linux-c03be0a3f3cc656eab5c427b78959b8f1b169a11.tar.gz linux-c03be0a3f3cc656eab5c427b78959b8f1b169a11.tar.bz2 linux-c03be0a3f3cc656eab5c427b78959b8f1b169a11.zip | |
powerpc: add definition for pt_regs offset within an interrupt frame
This is a common offset that currently uses the overloaded
STACK_FRAME_OVERHEAD constant. It's easier to read and more
flexible to use a specific regs offset for this.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221127124942.1665522-8-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/interrupt_64.S')
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index a019ed6fc839..49d585eae7c8 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -78,7 +78,7 @@ _ASM_NOKPROBE_SYMBOL(system_call_vectored_\name) std r12,_CCR(r1) std r3,ORIG_GPR3(r1) /* Calling convention has r3 = regs, r4 = orig r0 */ - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS mr r4,r0 LOAD_REG_IMMEDIATE(r11, STACK_FRAME_REGS_MARKER) std r11,-16(r3) /* "regshere" marker */ @@ -99,7 +99,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) bl system_call_exception .Lsyscall_vectored_\name\()_exit: - addi r4,r1,STACK_FRAME_OVERHEAD + addi r4,r1,STACK_INT_FRAME_REGS li r5,1 /* scv */ bl syscall_exit_prepare std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ @@ -176,7 +176,7 @@ _ASM_NOKPROBE_SYMBOL(syscall_vectored_\name\()_restart) ld r1,PACA_EXIT_SAVE_R1(r13) LOAD_PACA_TOC() ld r3,RESULT(r1) - addi r4,r1,STACK_FRAME_OVERHEAD + addi r4,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) bl syscall_exit_restart @@ -251,7 +251,7 @@ END_BTB_FLUSH_SECTION std r12,_CCR(r1) std r3,ORIG_GPR3(r1) /* Calling convention has r3 = regs, r4 = orig r0 */ - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS mr r4,r0 LOAD_REG_IMMEDIATE(r11, STACK_FRAME_REGS_MARKER) std r11,-16(r3) /* "regshere" marker */ @@ -278,7 +278,7 @@ END_BTB_FLUSH_SECTION bl system_call_exception .Lsyscall_exit: - addi r4,r1,STACK_FRAME_OVERHEAD + addi r4,r1,STACK_INT_FRAME_REGS li r5,0 /* !scv */ bl syscall_exit_prepare std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ @@ -357,7 +357,7 @@ _ASM_NOKPROBE_SYMBOL(syscall_restart) ld r1,PACA_EXIT_SAVE_R1(r13) LOAD_PACA_TOC() ld r3,RESULT(r1) - addi r4,r1,STACK_FRAME_OVERHEAD + addi r4,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) bl syscall_exit_restart @@ -388,7 +388,7 @@ _ASM_NOKPROBE_SYMBOL(fast_interrupt_return_srr) andi. r0,r5,MSR_RI li r3,0 /* 0 return value, no EMULATE_STACK_STORE */ bne+ .Lfast_kernel_interrupt_return_srr - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS bl unrecoverable_exception b . /* should not get here */ #else @@ -406,7 +406,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()) beq interrupt_return_\srr\()_kernel interrupt_return_\srr\()_user: /* make backtraces match the _kernel variant */ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user) - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS bl interrupt_exit_user_prepare cmpdi r3,0 bne- .Lrestore_nvgprs_\srr @@ -503,7 +503,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user_restart) GET_PACA(r13) ld r1,PACA_EXIT_SAVE_R1(r13) LOAD_PACA_TOC() - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) bl interrupt_exit_user_restart @@ -518,7 +518,7 @@ RESTART_TABLE(.Linterrupt_return_\srr\()_user_rst_start, .Linterrupt_return_\srr .balign IFETCH_ALIGN_BYTES interrupt_return_\srr\()_kernel: _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel) - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS bl interrupt_exit_kernel_prepare std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ @@ -684,7 +684,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel_restart) GET_PACA(r13) ld r1,PACA_EXIT_SAVE_R1(r13) LOAD_PACA_TOC() - addi r3,r1,STACK_FRAME_OVERHEAD + addi r3,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) bl interrupt_exit_kernel_restart |