e2fdd7fd99
Current limitations: 1) On SMP single stepping has some fundamental issues, shared with other sw single-step architectures such as mips and arm. 2) On 32-bit sparc we don't support SMP kgdb yet. That requires some reworking of the IPI mechanisms and infrastructure on that platform. Signed-off-by: David S. Miller <davem@davemloft.net>
98 lines
2.0 KiB
ArmAsm
98 lines
2.0 KiB
ArmAsm
#ifdef CONFIG_KGDB
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.globl arch_kgdb_breakpoint
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.type arch_kgdb_breakpoint,#function
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arch_kgdb_breakpoint:
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ta 0x72
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retl
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nop
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.size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
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#endif
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.type __do_privact,#function
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__do_privact:
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mov TLB_SFSR, %g3
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stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
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membar #Sync
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sethi %hi(109f), %g7
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ba,pt %xcc, etrap
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109: or %g7, %lo(109b), %g7
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call do_privact
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add %sp, PTREGS_OFF, %o0
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ba,pt %xcc, rtrap
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nop
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.size __do_privact,.-__do_privact
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.type do_mna,#function
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do_mna:
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rdpr %tl, %g3
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cmp %g3, 1
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/* Setup %g4/%g5 now as they are used in the
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* winfixup code.
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*/
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mov TLB_SFSR, %g3
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mov DMMU_SFAR, %g4
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ldxa [%g4] ASI_DMMU, %g4
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ldxa [%g3] ASI_DMMU, %g5
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stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
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membar #Sync
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bgu,pn %icc, winfix_mna
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rdpr %tpc, %g3
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1: sethi %hi(109f), %g7
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ba,pt %xcc, etrap
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109: or %g7, %lo(109b), %g7
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mov %l4, %o1
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mov %l5, %o2
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call mem_address_unaligned
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add %sp, PTREGS_OFF, %o0
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ba,pt %xcc, rtrap
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nop
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.size do_mna,.-do_mna
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.type do_lddfmna,#function
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do_lddfmna:
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sethi %hi(109f), %g7
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mov TLB_SFSR, %g4
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ldxa [%g4] ASI_DMMU, %g5
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stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
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membar #Sync
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mov DMMU_SFAR, %g4
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ldxa [%g4] ASI_DMMU, %g4
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ba,pt %xcc, etrap
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109: or %g7, %lo(109b), %g7
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mov %l4, %o1
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mov %l5, %o2
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call handle_lddfmna
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add %sp, PTREGS_OFF, %o0
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ba,pt %xcc, rtrap
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nop
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.size do_lddfmna,.-do_lddfmna
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.type do_stdfmna,#function
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do_stdfmna:
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sethi %hi(109f), %g7
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mov TLB_SFSR, %g4
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ldxa [%g4] ASI_DMMU, %g5
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stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
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membar #Sync
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mov DMMU_SFAR, %g4
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ldxa [%g4] ASI_DMMU, %g4
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ba,pt %xcc, etrap
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109: or %g7, %lo(109b), %g7
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mov %l4, %o1
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mov %l5, %o2
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call handle_stdfmna
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add %sp, PTREGS_OFF, %o0
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ba,pt %xcc, rtrap
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nop
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.size do_stdfmna,.-do_stdfmna
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.type breakpoint_trap,#function
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breakpoint_trap:
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call sparc_breakpoint
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add %sp, PTREGS_OFF, %o0
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ba,pt %xcc, rtrap
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nop
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.size breakpoint_trap,.-breakpoint_trap
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