diff options
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
| -rw-r--r-- | arch/sparc64/kernel/entry.S | 497 |
1 files changed, 258 insertions, 239 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S index 579fbb4c2..0d95e1b75 100644 --- a/arch/sparc64/kernel/entry.S +++ b/arch/sparc64/kernel/entry.S @@ -1,4 +1,4 @@ -/* $Id: entry.S,v 1.27 1997/05/27 19:30:11 jj Exp $ +/* $Id: entry.S,v 1.31 1997/06/02 06:33:25 davem Exp $ * arch/sparc64/kernel/entry.S: Sparc64 trap low-level entry points. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) @@ -18,7 +18,7 @@ #include <asm/signal.h> #include <asm/pgtable.h> -/* define SYSCALL_TRACING */ +/* #define SYSCALL_TRACING */ #define curptr g6 @@ -39,82 +39,84 @@ * it will not get updated properly. */ sparc64_dtlb_prot_catch: - wr %g0, ASI_DMMU, %asi - rdpr %pstate, %g1 - wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate - rdpr %tl, %g2 - ldxa [%g0 + TLB_TAG_ACCESS] %asi, %g5 - ldxa [%g0 + TLB_SFSR] %asi, %g4 - cmp %g2, 1 - stxa %g0, [%g0 + TLB_SFSR] %asi - bgu,a %icc, winfix_trampoline - rdpr %tpc, %g5 - ba,pt %xcc, etrap - rd %pc, %g7 - b,a,pt %xcc, 1f + wr %g0, ASI_DMMU, %asi + rdpr %pstate, %g1 + wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate + rdpr %tl, %g3 + ldxa [%g0 + TLB_TAG_ACCESS] %asi, %g5 + ldxa [%g0 + TLB_SFSR] %asi, %g4 + cmp %g3, 1 + stxa %g0, [%g0 + TLB_SFSR] %asi + bgu,a,pn %icc, winfix_trampoline + rdpr %tpc, %g3 + ba,pt %xcc, etrap + rd %pc, %g7 + b,a,pt %xcc, 1f sparc64_dtlb_refbit_catch: - srlx %g5, 9, %g4 - and %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9), %g4 - cmp %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9) - be,a,pt %xcc, 2f - mov 1, %g4 - wr %g0, ASI_DMMU, %asi - rdpr %pstate, %g1 - wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate - rdpr %tl, %g2 - ldxa [%g0 + TLB_TAG_ACCESS] %asi, %g5 - cmp %g2, 1 - clr %g4 ! sfsr not updated for tlb misses - bgu,a %icc, winfix_trampoline - rdpr %tpc, %g5 - ba,pt %xcc, etrap - rd %pc, %g7 + srlx %g5, 9, %g4 + and %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9), %g4 + cmp %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9) + be,a,pt %xcc, 2f + mov 1, %g4 + wr %g0, ASI_DMMU, %asi + rdpr %pstate, %g1 + wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate + rdpr %tl, %g3 + ldxa [%g0 + TLB_TAG_ACCESS] %asi, %g5 + cmp %g3, 1 + clr %g4 ! sfsr not updated for tlb misses + bgu,a,pn %icc, winfix_trampoline + rdpr %tpc, %g3 + ba,pt %xcc, etrap + rd %pc, %g7 1: - mov %l5, %o4 ! raw tag access - mov %l4, %o5 ! raw sfsr - srlx %l5, PAGE_SHIFT, %o3 - clr %o1 ! text_fault == 0 - sllx %o3, PAGE_SHIFT, %o3 ! address - and %l4, 0x4, %o2 ! write == sfsr.W - call do_sparc64_fault - add %sp, STACK_BIAS + REGWIN_SZ, %o0 ! pt_regs ptr - ba,a,pt %xcc, rtrap + mov %l5, %o4 ! raw tag access + mov %l4, %o5 ! raw sfsr + srlx %l5, PAGE_SHIFT, %o3 + clr %o1 ! text_fault == 0 + sllx %o3, PAGE_SHIFT, %o3 ! address + and %l4, 0x4, %o2 ! write == sfsr.W + call do_sparc64_fault + add %sp, STACK_BIAS + REGWIN_SZ, %o0 ! pt_regs ptr + ba,pt %xcc, rtrap + clr %l6 sparc64_itlb_refbit_catch: - srlx %g5, 9, %g4 - and %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9), %g4 - cmp %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9) - be,a,pt %xcc, 3f - mov 1, %g4 - rdpr %pstate, %g1 - wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate - ba,pt %xcc, etrap - rd %pc, %g7 - - ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC], %o3 - mov 1, %o1 ! text_fault == 1 - clr %o2 ! write == 0 - clr %o4 ! tag access (N/A) - clr %o5 ! raw sfsr (N/A) - call do_sparc64_fault - add %sp, STACK_BIAS + REGWIN_SZ, %o0 ! pt_regs ptr - ba,a,pt %xcc, rtrap + srlx %g5, 9, %g4 + and %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9), %g4 + cmp %g4, ((_PAGE_PRESENT | _PAGE_READ) >> 9) + be,a,pt %xcc, 3f + mov 1, %g4 + rdpr %pstate, %g1 + wrpr %g1, PSTATE_AG|PSTATE_MG, %pstate + ba,pt %xcc, etrap + rd %pc, %g7 + + ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC], %o3 + mov 1, %o1 ! text_fault == 1 + clr %o2 ! write == 0 + clr %o4 ! tag access (N/A) + clr %o5 ! raw sfsr (N/A) + call do_sparc64_fault + add %sp, STACK_BIAS + REGWIN_SZ, %o0 ! pt_regs ptr + ba,pt %xcc, rtrap + clr %l6 2: - sllx %g4, 63, %g4 ! _PAGE_VALID - or %g5, _PAGE_ACCESSED, %g5 - or %g5, %g4, %g5 - stxa %g5, [%g3 + %g1] ASI_PHYS_USE_EC ! store new PTE - stxa %g5, [%g0] ASI_DTLB_DATA_IN ! TLB load + sllx %g4, 63, %g4 ! _PAGE_VALID + or %g5, _PAGE_ACCESSED, %g5 + or %g5, %g4, %g5 + stxa %g5, [%g3 + %g1] ASI_PHYS_USE_EC ! store new PTE + stxa %g5, [%g0] ASI_DTLB_DATA_IN ! TLB load retry 3: - sllx %g4, 63, %g4 ! _PAGE_VALID - or %g5, _PAGE_ACCESSED, %g5 - or %g5, %g4, %g5 - stxa %g5, [%g3 + %g1] ASI_PHYS_USE_EC ! store new PTE - stxa %g5, [%g0] ASI_ITLB_DATA_IN ! TLB load + sllx %g4, 63, %g4 ! _PAGE_VALID + or %g5, _PAGE_ACCESSED, %g5 + or %g5, %g4, %g5 + stxa %g5, [%g3 + %g1] ASI_PHYS_USE_EC ! store new PTE + stxa %g5, [%g0] ASI_ITLB_DATA_IN ! TLB load retry /* Note check out head.h, this code isn't even used for UP, @@ -131,268 +133,285 @@ sparc64_itlb_refbit_catch: .align 4 .globl do_ivec do_ivec: - ldxa [%g0] ASI_INTR_RECEIVE, %g1 - andcc %g1, 0x20, %g0 - be,pn %xcc, do_ivec_return - mov 0x40, %g2 + ldxa [%g0] ASI_INTR_RECEIVE, %g1 + andcc %g1, 0x20, %g0 + be,pn %xcc, do_ivec_return + mov 0x40, %g2 /* Load up Interrupt Vector Data 0 register. */ - sethi %uhi(ivector_to_mask), %g4 - ldxa [%g2] ASI_UDB_INTR_R, %g3 - or %g4, %ulo(ivector_to_mask), %g4 - and %g3, 0x7ff, %g3 - sllx %g4, 32, %g4 - sethi %hi(ivector_to_mask), %g5 - sllx %g3, 3, %g3 - or %g5, %lo(ivector_to_mask), %g5 - add %g5, %g4, %g4 - ldx [%g4 + %g3], %g2 - brz,pn %g2, do_ivec_spurious + sethi %uhi(ivector_to_mask), %g4 + ldxa [%g2] ASI_UDB_INTR_R, %g3 + or %g4, %ulo(ivector_to_mask), %g4 + and %g3, 0x7ff, %g3 + sllx %g4, 32, %g4 + sethi %hi(ivector_to_mask), %g5 + sllx %g3, 3, %g3 + or %g5, %lo(ivector_to_mask), %g5 + add %g5, %g4, %g4 + ldx [%g4 + %g3], %g2 + brz,pn %g2, do_ivec_spurious nop /* No branches, worse case we don't know about this interrupt * yet, so we would just write a zero into the softint register * which is completely harmless. */ - wr %g2, 0x0, %set_softint + wr %g2, 0x0, %set_softint do_ivec_return: /* Acknowledge the UPA */ - stxa %g0, [%g0] ASI_INTR_RECEIVE - membar #Sync + stxa %g0, [%g0] ASI_INTR_RECEIVE + membar #Sync retry do_ivec_spurious: - stxa %g0, [%g0] ASI_INTR_RECEIVE - rdpr %pstate, %g1 - wrpr %g1, PSTATE_IG | PSTATE_AG, %pstate - ba,pt %xcc, etrap - rd %pc, %g7 - call report_spurious_ivec - add %sp, STACK_BIAS + REGWIN_SZ, %o0 - ba,pt %xcc, rtrap - nop + stxa %g0, [%g0] ASI_INTR_RECEIVE + rdpr %pstate, %g1 + wrpr %g1, PSTATE_IG | PSTATE_AG, %pstate + ba,pt %xcc, etrap + rd %pc, %g7 + call report_spurious_ivec + add %sp, STACK_BIAS + REGWIN_SZ, %o0 + ba,pt %xcc, rtrap + clr %l6 + + .globl do_mna +do_mna: + rdpr %tl, %g3 + cmp %g3, 1 + bgu,a,pn %icc, winfix_mna + rdpr %tpc, %g3 + ba,pt %xcc, etrap + rd %pc, %g7 + call mem_address_unaligned + add %sp, STACK_BIAS + REGWIN_SZ, %o0 + ba,pt %xcc, rtrap + clr %l6 -breakpoint_t: - .asciz "Breakpoint Trap %lx\n" - .align 4 .globl breakpoint_trap breakpoint_trap: - mov %o0, %o1 - sethi %hi(breakpoint_t), %o0 - or %o0, %lo(breakpoint_t), %o0 - call prom_printf - add %o0, %g4, %o0 - call prom_cmdline + call sparc_breakpoint + add %sp, STACK_BIAS + REGWIN_SZ, %o0 + ba,pt %xcc, rtrap nop - ba,a,pt %xcc, rtrap .globl sys_pipe, sys_execve, sys_sigpause, sys_nis_syscall .globl sys_sigsuspend, sys_sigreturn .globl sys32_execve, sys_ptrace sys_pipe: - sethi %hi(sparc_pipe), %g1 - add %g1, %g4, %g1 - jmpl %g1 + %lo(sparc_pipe), %g0 - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + sethi %hi(sparc_pipe), %g1 + add %g1, %g4, %g1 + jmpl %g1 + %lo(sparc_pipe), %g0 + add %sp, STACK_BIAS + REGWIN_SZ, %o0 sys_nis_syscall: - sethi %hi(c_sys_nis_syscall), %g1 - add %g1, %g4, %g1 - jmpl %g1 + %lo(c_sys_nis_syscall), %g0 - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + sethi %hi(c_sys_nis_syscall), %g1 + add %g1, %g4, %g1 + jmpl %g1 + %lo(c_sys_nis_syscall), %g0 + add %sp, STACK_BIAS + REGWIN_SZ, %o0 sys_execve: - sethi %hi(sparc_execve), %g1 - add %g1, %g4, %g1 - jmpl %g1 + %lo(sparc_execve), %g0 - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + sethi %hi(sparc_execve), %g1 + add %g1, %g4, %g1 + jmpl %g1 + %lo(sparc_execve), %g0 + add %sp, STACK_BIAS + REGWIN_SZ, %o0 sys32_execve: - sethi %hi(sparc32_execve), %g1 - add %g1, %g4, %g1 - jmpl %g1 + %lo(sparc32_execve), %g0 - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + sethi %hi(sparc32_execve), %g1 + add %g1, %g4, %g1 + jmpl %g1 + %lo(sparc32_execve), %g0 + add %sp, STACK_BIAS + REGWIN_SZ, %o0 sys_sigpause: /* NOTE: %o0 has a correct value already */ - call do_sigpause - add %sp, STACK_BIAS + REGWIN_SZ, %o1 + call do_sigpause + add %sp, STACK_BIAS + REGWIN_SZ, %o1 - ld [%curptr + AOFF_task_flags], %l5 - andcc %l5, 0x20, %g0 - be,pt %icc, rtrap + ld [%curptr + AOFF_task_flags], %l5 + andcc %l5, 0x20, %g0 + be,pt %icc, rtrap + clr %l6 + call syscall_trace nop - call syscall_trace - nop - ba,a,pt %xcc, rtrap + ba,pt %xcc, rtrap + clr %l6 sys_sigsuspend: - call do_sigsuspend - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + call do_sigsuspend + add %sp, STACK_BIAS + REGWIN_SZ, %o0 - ld [%curptr + AOFF_task_flags], %l5 - andcc %l5, 0x20, %g0 - be,pt %icc, rtrap - nop - call syscall_trace + ld [%curptr + AOFF_task_flags], %l5 + andcc %l5, 0x20, %g0 + be,pt %icc, rtrap + clr %l6 + call syscall_trace nop - ba,a,pt %xcc, rtrap + ba,pt %xcc, rtrap + clr %l6 sys_sigreturn: - call do_sigreturn - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + call do_sigreturn + add %sp, STACK_BIAS + REGWIN_SZ, %o0 - ld [%curptr + AOFF_task_flags], %l5 - andcc %l5, 0x20, %g0 - be,pt %icc, rtrap + ld [%curptr + AOFF_task_flags], %l5 + andcc %l5, 0x20, %g0 + be,pt %icc, rtrap + clr %l6 + call syscall_trace nop - call syscall_trace - nop - ba,a,pt %xcc, rtrap + ba,pt %xcc, rtrap + clr %l6 sys_ptrace: - call do_ptrace - add %sp, STACK_BIAS + REGWIN_SZ, %o0 + call do_ptrace + add %sp, STACK_BIAS + REGWIN_SZ, %o0 - ld [%curptr + AOFF_task_flags], %l5 - andcc %l5, 0x20, %g0 - be,pt %icc, rtrap - nop - call syscall_trace + ld [%curptr + AOFF_task_flags], %l5 + andcc %l5, 0x20, %g0 + be,pt %icc, rtrap + clr %l6 + call syscall_trace nop - ba,a,pt %xcc, rtrap + ba,pt %xcc, rtrap + clr %l6 - /* This is how fork() was meant to be done, 10 instruction entry. -DaveM */ + /* This is how fork() was meant to be done, 12 instruction entry. -DaveM */ .globl sys_fork, sys_vfork, sys_clone sys_fork: sys_vfork: - mov SIGCHLD, %o0 - clr %o1 + mov SIGCHLD, %o0 + clr %o1 sys_clone: - mov %o7, %l5 + mov %o7, %l5 + save %sp, -REGWIN_SZ, %sp flushw - rdpr %cwp, %o4 - add %sp, STACK_BIAS + REGWIN_SZ, %o2 - movrz %o1, %fp, %o1 + restore %g0, %g0, %g0 + rdpr %cwp, %o4 + add %sp, STACK_BIAS + REGWIN_SZ, %o2 + movrz %o1, %fp, %o1 /* Don't try this at home. */ - stx %o4, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_G0] - call do_fork - mov %l5, %o7 + stx %o4, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_G0] + call do_fork + mov %l5, %o7 linux_sparc_ni_syscall: - sethi %hi(sys_ni_syscall), %l7 - or %l7, %lo(sys_ni_syscall), %l7 - ba,pt %xcc,syscall_is_too_hard - add %l7, %g4, %l7 + sethi %hi(sys_ni_syscall), %l7 + or %l7, %lo(sys_ni_syscall), %l7 + ba,pt %xcc,syscall_is_too_hard + add %l7, %g4, %l7 linux_fast_syscall: - andn %l7, 3, %l7 - mov %i0, %o0 - mov %i1, %o1 - mov %i2, %o2 - jmpl %l7 + %g0, %g0 - mov %i3, %o3 + andn %l7, 3, %l7 + mov %i0, %o0 + mov %i1, %o1 + mov %i2, %o2 + jmpl %l7 + %g0, %g0 + mov %i3, %o3 linux_syscall_trace: - call syscall_trace + call syscall_trace nop - mov %i0, %o0 - mov %i1, %o1 - mov %i2, %o2 - mov %i3, %o3 - ba,pt %xcc, 2f - mov %i4, %o4 + mov %i0, %o0 + mov %i1, %o1 + mov %i2, %o2 + mov %i3, %o3 + ba,pt %xcc, 2f + mov %i4, %o4 .globl ret_from_syscall ret_from_syscall: - ba,pt %xcc, ret_sys_call - ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0], %o0 + ba,pt %xcc, ret_sys_call + ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0], %o0 /* Linux native and SunOS system calls enter here... */ .align 4 .globl linux_sparc_syscall linux_sparc_syscall: /* Direct access to user regs, must faster. */ - cmp %g1, NR_SYSCALLS - add %l7, %g4, %l7 - bgeu,pn %xcc, linux_sparc_ni_syscall - sll %g1, 3, %l4 - ldx [%l7 + %l4], %l7 - andcc %l7, 1, %g0 - bne,pn %icc, linux_fast_syscall + cmp %g1, NR_SYSCALLS + add %l7, %g4, %l7 + bgeu,pn %xcc, linux_sparc_ni_syscall + sll %g1, 3, %l4 + ldx [%l7 + %l4], %l7 + andcc %l7, 1, %g0 + bne,pn %icc, linux_fast_syscall /* Just do the next insn in the delay slot */ .globl syscall_is_too_hard syscall_is_too_hard: #ifdef SYSCALL_TRACING /* Debugging... */ - mov %g1, %o0 ! o0=scall, o1=ptregs - call syscall_trace_entry - add %sp, STACK_BIAS + REGWIN_SZ, %o1 + mov %g1, %o0 ! o0=scall, o1=ptregs + call syscall_trace_entry + add %sp, STACK_BIAS + REGWIN_SZ, %o1 #endif - mov %i0, %o0 - mov %i1, %o1 - mov %i2, %o2 - - ldx [%curptr + AOFF_task_flags], %l5 - mov %i3, %o3 - mov %i4, %o4 - andcc %l5, 0x20, %g0 - bne,pn %icc, linux_syscall_trace - mov %i0, %l5 + mov %i0, %o0 + mov %i1, %o1 + mov %i2, %o2 + + ldx [%curptr + AOFF_task_flags], %l5 + mov %i3, %o3 + mov %i4, %o4 + andcc %l5, 0x20, %g0 + bne,pn %icc, linux_syscall_trace + mov %i0, %l5 2: - call %l7 - mov %i5, %o5 + call %l7 + mov %i5, %o5 #ifdef SYSCALL_TRACING /* Debugging... */ - call syscall_trace_exit ! o0=sysret, o1=ptregs - add %sp, STACK_BIAS + REGWIN_SZ, %o1 + call syscall_trace_exit ! o0=sysret, o1=ptregs + add %sp, STACK_BIAS + REGWIN_SZ, %o1 #endif - stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] + stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] .globl ret_sys_call ret_sys_call: - ldx [%curptr + AOFF_task_flags], %l6 - mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2 - ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE], %g3 - cmp %o0, -ENOIOCTLCMD - sllx %g2, 32, %g2 - bgeu,pn %xcc, 1f - andcc %l6, 0x20, %l6 + ldx [%curptr + AOFF_task_flags], %l6 + ldx [%curptr + AOFF_task_tss + AOFF_thread_flags], %l2 + mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2 + and %l2, SPARC_FLAG_32BIT, %l2 + ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE], %g3 + brnz,a,pn %l2, 1f + sra %o0, 0, %o0 +1: + cmp %o0, -ENOIOCTLCMD + sllx %g2, 32, %g2 + bgeu,pn %xcc, 1f + andcc %l6, 0x20, %l6 /* System call success, clear Carry condition code. */ - andn %g3, %g2, %g3 - clr %l6 - stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] - bne,pn %icc, linux_syscall_trace2 - ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 /* pc = npc */ - add %l1, 0x4, %l2 /* npc = npc+4 */ - stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] - ba,pt %xcc, rtrap - stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] + andn %g3, %g2, %g3 + clr %l6 + stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] + bne,pn %icc, linux_syscall_trace2 + ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 ! pc = npc + add %l1, 0x4, %l2 !npc = npc+4 + stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] + ba,pt %xcc, rtrap + stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] 1: /* System call failure, set Carry condition code. * Also, get abs(errno) to return to the process. */ - sub %g0, %o0, %o0 - or %g3, %g2, %g3 - stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] - mov 1, %l6 - stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] - bne,pn %icc, linux_syscall_trace2 - ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 /* pc = npc */ - add %l1, 0x4, %l2 /* npc = npc+4 */ - stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] - ba,pt %xcc, rtrap - stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] + sub %g0, %o0, %o0 + or %g3, %g2, %g3 + stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] + mov 1, %l6 + stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] + bne,pn %icc, linux_syscall_trace2 + ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 ! pc = npc + add %l1, 0x4, %l2 !npc = npc+4 + stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] + ba,pt %xcc, rtrap + stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] linux_syscall_trace2: - call syscall_trace - add %l1, 0x4, %l2 /* npc = npc+4 */ - stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] - ba,pt %xcc, rtrap - stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] + call syscall_trace + add %l1, 0x4, %l2 /* npc = npc+4 */ + stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] + ba,pt %xcc, rtrap + stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] /* End of entry.S */ |