Merge branch 'bsym' into for-next
Conflicts: arch/arm/kernel/head.S
This commit is contained in:
commit
05c9ca8843
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@ -130,7 +130,7 @@ start:
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.endr
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ARM( mov r0, r0 )
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ARM( b 1f )
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THUMB( adr r12, BSYM(1f) )
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THUMB( badr r12, 1f )
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THUMB( bx r12 )
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.word _magic_sig @ Magic numbers to help the loader
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@ -447,7 +447,7 @@ dtb_check_done:
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bl cache_clean_flush
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adr r0, BSYM(restart)
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badr r0, restart
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add r0, r0, r6
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mov pc, r0
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@ -49,7 +49,7 @@
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ENTRY(mcpm_entry_point)
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ARM_BE8(setend be)
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THUMB( adr r12, BSYM(1f) )
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THUMB( badr r12, 1f )
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THUMB( bx r12 )
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THUMB( .thumb )
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1:
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@ -177,6 +177,21 @@
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restore_irqs_notrace \oldcpsr
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.endm
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/*
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* Assembly version of "adr rd, BSYM(sym)". This should only be used to
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* reference local symbols in the same assembly file which are to be
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* resolved by the assembler. Other usage is undefined.
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*/
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.irp c,,eq,ne,cs,cc,mi,pl,vs,vc,hi,ls,ge,lt,gt,le,hs,lo
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.macro badr\c, rd, sym
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#ifdef CONFIG_THUMB2_KERNEL
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adr\c \rd, \sym + 1
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#else
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adr\c \rd, \sym
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#endif
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.endm
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.endr
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/*
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* Get current thread_info.
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*/
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@ -326,7 +341,7 @@
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THUMB( orr \reg , \reg , #PSR_T_BIT )
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bne 1f
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orr \reg, \reg, #PSR_A_BIT
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adr lr, BSYM(2f)
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badr lr, 2f
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msr spsr_cxsf, \reg
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__MSR_ELR_HYP(14)
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__ERET
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@ -10,7 +10,7 @@
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@
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@ routine called with r0 = irq number, r1 = struct pt_regs *
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@
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adrne lr, BSYM(1b)
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badrne lr, 1b
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bne asm_do_IRQ
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#ifdef CONFIG_SMP
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@ -23,7 +23,7 @@
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ALT_SMP(test_for_ipi r0, r2, r6, lr)
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ALT_UP_B(9997f)
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movne r1, sp
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adrne lr, BSYM(1b)
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badrne lr, 1b
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bne do_IPI
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#endif
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9997:
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@ -45,7 +45,6 @@
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#define THUMB(x...) x
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#ifdef __ASSEMBLY__
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#define W(instr) instr.w
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#define BSYM(sym) sym + 1
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#else
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#define WASM(instr) #instr ".w"
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#endif
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@ -59,7 +58,6 @@
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#define THUMB(x...)
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#ifdef __ASSEMBLY__
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#define W(instr) instr
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#define BSYM(sym) sym
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#else
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#define WASM(instr) #instr
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#endif
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@ -40,7 +40,7 @@
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#ifdef CONFIG_MULTI_IRQ_HANDLER
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ldr r1, =handle_arch_irq
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mov r0, sp
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adr lr, BSYM(9997f)
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badr lr, 9997f
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ldr pc, [r1]
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#else
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arch_irq_handler_default
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@ -273,7 +273,7 @@ __und_svc:
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str r4, [sp, #S_PC]
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orr r0, r9, r0, lsl #16
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#endif
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adr r9, BSYM(__und_svc_finish)
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badr r9, __und_svc_finish
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mov r2, r4
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bl call_fpe
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@ -469,7 +469,7 @@ __und_usr:
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@ instruction, or the more conventional lr if we are to treat
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@ this as a real undefined instruction
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@
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adr r9, BSYM(ret_from_exception)
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badr r9, ret_from_exception
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@ IRQs must be enabled before attempting to read the instruction from
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@ user space since that could cause a page/translation fault if the
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@ -486,7 +486,7 @@ __und_usr:
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@ r2 = PC value for the following instruction (:= regs->ARM_pc)
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@ r4 = PC value for the faulting instruction
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@ lr = 32-bit undefined instruction function
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adr lr, BSYM(__und_usr_fault_32)
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badr lr, __und_usr_fault_32
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b call_fpe
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__und_usr_thumb:
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@ -522,7 +522,7 @@ ARM_BE8(rev16 r0, r0) @ little endian instruction
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add r2, r2, #2 @ r2 is PC + 2, make it PC + 4
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str r2, [sp, #S_PC] @ it's a 2x16bit instr, update
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orr r0, r0, r5, lsl #16
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adr lr, BSYM(__und_usr_fault_32)
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badr lr, __und_usr_fault_32
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@ r0 = the two 16-bit Thumb instructions which caused the exception
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@ r2 = PC value for the following Thumb instruction (:= regs->ARM_pc)
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@ r4 = PC value for the first 16-bit Thumb instruction
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@ -716,7 +716,7 @@ __und_usr_fault_32:
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__und_usr_fault_16:
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mov r1, #2
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1: mov r0, sp
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adr lr, BSYM(ret_from_exception)
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badr lr, ret_from_exception
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b __und_fault
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ENDPROC(__und_usr_fault_32)
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ENDPROC(__und_usr_fault_16)
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@ -90,7 +90,7 @@ ENTRY(ret_from_fork)
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bl schedule_tail
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cmp r5, #0
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movne r0, r4
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adrne lr, BSYM(1f)
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badrne lr, 1f
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retne r5
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1: get_thread_info tsk
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b ret_slow_syscall
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@ -198,7 +198,7 @@ local_restart:
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bne __sys_trace
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cmp scno, #NR_syscalls @ check upper syscall limit
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adr lr, BSYM(ret_fast_syscall) @ return address
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badr lr, ret_fast_syscall @ return address
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ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine
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add r1, sp, #S_OFF
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@ -233,7 +233,7 @@ __sys_trace:
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add r0, sp, #S_OFF
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bl syscall_trace_enter
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adr lr, BSYM(__sys_trace_return) @ return address
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badr lr, __sys_trace_return @ return address
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mov scno, r0 @ syscall number (possibly new)
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add r1, sp, #S_R0 + S_OFF @ pointer to regs
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cmp scno, #NR_syscalls @ check upper syscall limit
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@ -87,7 +87,7 @@
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1: mcount_get_lr r1 @ lr of instrumented func
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mcount_adjust_addr r0, lr @ instrumented function
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adr lr, BSYM(2f)
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badr lr, 2f
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mov pc, r2
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2: mcount_exit
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.endm
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@ -46,7 +46,7 @@ ENTRY(stext)
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.arm
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ENTRY(stext)
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THUMB( adr r9, BSYM(1f) ) @ Kernel is always entered in ARM.
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THUMB( badr r9, 1f ) @ Kernel is always entered in ARM.
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THUMB( bx r9 ) @ If this is a Thumb-2 kernel,
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THUMB( .thumb ) @ switch to Thumb now.
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THUMB(1: )
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@ -79,7 +79,7 @@ ENTRY(stext)
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#endif
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ldr r13, =__mmap_switched @ address to jump to after
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@ initialising sctlr
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adr lr, BSYM(1f) @ return (PIC) address
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badr lr, 1f @ return (PIC) address
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ldr r12, [r10, #PROCINFO_INITFUNC]
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add r12, r12, r10
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ret r12
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@ -115,7 +115,7 @@ ENTRY(secondary_startup)
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bl __setup_mpu @ Initialize the MPU
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#endif
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adr lr, BSYM(__after_proc_init) @ return address
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badr lr, __after_proc_init @ return address
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mov r13, r12 @ __secondary_switched address
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ldr r12, [r10, #PROCINFO_INITFUNC]
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add r12, r12, r10
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@ -80,7 +80,7 @@
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ENTRY(stext)
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ARM_BE8(setend be ) @ ensure we are in BE8 mode
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THUMB( adr r9, BSYM(1f) ) @ Kernel is always entered in ARM.
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THUMB( badr r9, 1f ) @ Kernel is always entered in ARM.
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THUMB( bx r9 ) @ If this is a Thumb-2 kernel,
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THUMB( .thumb ) @ switch to Thumb now.
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THUMB(1: )
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@ -148,7 +148,7 @@ ENTRY(stext)
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*/
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ldr r13, =__mmap_switched @ address to jump to after
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@ mmu has been enabled
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adr lr, BSYM(1f) @ return (PIC) address
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badr lr, 1f @ return (PIC) address
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#ifdef CONFIG_ARM_LPAE
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mov r5, #0 @ high TTBR0
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mov r8, r4, lsr #12 @ TTBR1 is swapper_pg_dir pfn
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@ -364,7 +364,7 @@ __turn_mmu_on_loc:
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.text
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.arm
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ENTRY(secondary_startup_arm)
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THUMB( adr r9, BSYM(1f) ) @ Kernel is entered in ARM.
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THUMB( badr r9, 1f ) @ Kernel is entered in ARM.
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THUMB( bx r9 ) @ If this is a Thumb-2 kernel,
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THUMB( .thumb ) @ switch to Thumb now.
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THUMB(1: )
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@ -400,7 +400,7 @@ ENTRY(secondary_startup)
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add r3, r7, lr
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ldrd r4, [r3, #0] @ get secondary_data.pgdir
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ldr r8, [r3, #8] @ get secondary_data.swapper_pg_dir
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adr lr, BSYM(__enable_mmu) @ return address
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badr lr, __enable_mmu @ return address
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mov r13, r12 @ __secondary_switched address
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ldr r12, [r10, #PROCINFO_INITFUNC]
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add r12, r12, r10 @ initialise processor
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@ -81,7 +81,7 @@ ENTRY(__cpu_suspend)
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mov r1, r4 @ size of save block
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add r0, sp, #8 @ pointer to save block
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bl __cpu_suspend_save
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adr lr, BSYM(cpu_suspend_abort)
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badr lr, cpu_suspend_abort
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ldmfd sp!, {r0, pc} @ call suspend fn
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ENDPROC(__cpu_suspend)
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.ltorg
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@ -309,7 +309,7 @@ ENTRY(kvm_call_hyp)
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THUMB( orr r2, r2, #PSR_T_BIT )
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msr spsr_cxsf, r2
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mrs r1, ELR_hyp
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ldr r2, =BSYM(panic)
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ldr r2, =panic
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msr ELR_hyp, r2
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ldr r0, =\panic_str
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clrex @ Clear exclusive monitor
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@ -35,7 +35,7 @@ ENTRY(call_with_stack)
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mov r2, r0
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mov r0, r1
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adr lr, BSYM(1f)
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badr lr, 1f
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ret r2
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1: ldr lr, [sp]
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@ -98,7 +98,7 @@ __v7m_setup:
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str r5, [r0, V7M_SCB_SHPR3] @ set PendSV priority
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@ SVC to run the kernel in this mode
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adr r1, BSYM(1f)
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badr r1, 1f
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ldr r5, [r12, #11 * 4] @ read the SVC vector entry
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str r1, [r12, #11 * 4] @ write the temporary SVC vector entry
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mov r6, lr @ save LR
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