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| author |  Nicholas Piggin <npiggin@gmail.com>
| 2023-04-08 12:17:50 +1000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2023-04-20 12:54:24 +1000 |
| commit | 4e991e3c16a350d1eeffc100ce3fb25292596d03 (patch) | |
| tree | 850fa79b5e450ca0bbb807c42a50cfd54d01f70e /arch/powerpc/kernel/interrupt_64.S | |
| parent | powerpc/64: Add support to build with prefixed instructions (diff) | |
| download | linux-4e991e3c16a350d1eeffc100ce3fb25292596d03.tar.gz linux-4e991e3c16a350d1eeffc100ce3fb25292596d03.tar.bz2 linux-4e991e3c16a350d1eeffc100ce3fb25292596d03.zip | |
powerpc: add CFUNC assembly label annotation
This macro is to be used in assembly where C functions are called.
pcrel addressing mode requires branches to functions with a
localentry value of 1 to have either a trailing nop or @notoc.
This macro permits the latter without changing callers.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Add dummy definitions to fix selftests build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230408021752.862660-5-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/interrupt_64.S')
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index 2a059214c1a9..6730d676284c 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -101,12 +101,12 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) * state of kernel code. */ SANITIZE_SYSCALL_GPRS() - bl system_call_exception + bl CFUNC(system_call_exception) .Lsyscall_vectored_\name\()_exit: addi r4,r1,STACK_INT_FRAME_REGS li r5,1 /* scv */ - bl syscall_exit_prepare + bl CFUNC(syscall_exit_prepare) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ .Lsyscall_vectored_\name\()_rst_start: lbz r11,PACAIRQHAPPENED(r13) @@ -185,7 +185,7 @@ _ASM_NOKPROBE_SYMBOL(syscall_vectored_\name\()_restart) addi r4,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) - bl syscall_exit_restart + bl CFUNC(syscall_exit_restart) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ b .Lsyscall_vectored_\name\()_rst_start 1: @@ -286,12 +286,12 @@ END_BTB_FLUSH_SECTION * state of kernel code. */ SANITIZE_SYSCALL_GPRS() - bl system_call_exception + bl CFUNC(system_call_exception) .Lsyscall_exit: addi r4,r1,STACK_INT_FRAME_REGS li r5,0 /* !scv */ - bl syscall_exit_prepare + bl CFUNC(syscall_exit_prepare) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ #ifdef CONFIG_PPC_BOOK3S .Lsyscall_rst_start: @@ -372,7 +372,7 @@ _ASM_NOKPROBE_SYMBOL(syscall_restart) addi r4,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) - bl syscall_exit_restart + bl CFUNC(syscall_exit_restart) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ b .Lsyscall_rst_start 1: @@ -401,7 +401,7 @@ _ASM_NOKPROBE_SYMBOL(fast_interrupt_return_srr) li r3,0 /* 0 return value, no EMULATE_STACK_STORE */ bne+ .Lfast_kernel_interrupt_return_srr addi r3,r1,STACK_INT_FRAME_REGS - bl unrecoverable_exception + bl CFUNC(unrecoverable_exception) b . /* should not get here */ #else bne .Lfast_user_interrupt_return_srr @@ -419,7 +419,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()) interrupt_return_\srr\()_user: /* make backtraces match the _kernel variant */ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user) addi r3,r1,STACK_INT_FRAME_REGS - bl interrupt_exit_user_prepare + bl CFUNC(interrupt_exit_user_prepare) #ifndef CONFIG_INTERRUPT_SANITIZE_REGISTERS cmpdi r3,0 bne- .Lrestore_nvgprs_\srr @@ -523,7 +523,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_user_restart) addi r3,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) - bl interrupt_exit_user_restart + bl CFUNC(interrupt_exit_user_restart) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ b .Linterrupt_return_\srr\()_user_rst_start 1: @@ -536,7 +536,7 @@ RESTART_TABLE(.Linterrupt_return_\srr\()_user_rst_start, .Linterrupt_return_\srr interrupt_return_\srr\()_kernel: _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel) addi r3,r1,STACK_INT_FRAME_REGS - bl interrupt_exit_kernel_prepare + bl CFUNC(interrupt_exit_kernel_prepare) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ .Linterrupt_return_\srr\()_kernel_rst_start: @@ -705,7 +705,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel_restart) addi r3,r1,STACK_INT_FRAME_REGS li r11,IRQS_ALL_DISABLED stb r11,PACAIRQSOFTMASK(r13) - bl interrupt_exit_kernel_restart + bl CFUNC(interrupt_exit_kernel_restart) std r1,PACA_EXIT_SAVE_R1(r13) /* save r1 for restart */ b .Linterrupt_return_\srr\()_kernel_rst_start 1: @@ -727,20 +727,20 @@ DEFINE_FIXED_SYMBOL(__end_soft_masked, text) #ifdef CONFIG_PPC_BOOK3S _GLOBAL(ret_from_fork_scv) - bl schedule_tail + bl CFUNC(schedule_tail) HANDLER_RESTORE_NVGPRS() li r3,0 /* fork() return value */ b .Lsyscall_vectored_common_exit #endif _GLOBAL(ret_from_fork) - bl schedule_tail + bl CFUNC(schedule_tail) HANDLER_RESTORE_NVGPRS() li r3,0 /* fork() return value */ b .Lsyscall_exit _GLOBAL(ret_from_kernel_user_thread) - bl schedule_tail + bl CFUNC(schedule_tail) mtctr r14 mr r3,r15 #ifdef CONFIG_PPC64_ELF_ABI_V2 |