Misc reordering, to clarify and reduce the diff against amd64.
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maxv
parent
9e7633eff2
commit
6c0e984be8
@ -1,4 +1,4 @@
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/* $NetBSD: i386_trap.S,v 1.18 2019/02/11 17:28:52 cherry Exp $ */
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/* $NetBSD: i386_trap.S,v 1.19 2019/10/04 15:28:00 maxv Exp $ */
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/*
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* Copyright 2002 (c) Wasabi Systems, Inc.
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@ -66,7 +66,7 @@
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#if 0
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#include <machine/asm.h>
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__KERNEL_RCSID(0, "$NetBSD: i386_trap.S,v 1.18 2019/02/11 17:28:52 cherry Exp $");
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__KERNEL_RCSID(0, "$NetBSD: i386_trap.S,v 1.19 2019/10/04 15:28:00 maxv Exp $");
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#endif
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/*
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@ -220,7 +220,7 @@ IDTVEC(trap07)
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pushl %esp
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call _C_LABEL(fpudna)
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addl $4,%esp
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jmp _C_LABEL(trapreturn)
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jmp .Lalltraps_checkusr
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IDTVEC_END(trap07)
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IDTVEC(trap08)
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@ -282,7 +282,7 @@ IDTVEC(trap0f)
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#ifdef DIAGNOSTIC
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movl CPUVAR(ILEVEL),%ebx
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#endif
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jmp _C_LABEL(trapreturn)
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jmp .Lalltraps_checkusr
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IDTVEC_END(trap0f)
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IDTVEC_END(intrspurious)
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@ -302,7 +302,7 @@ IDTVEC(trap10)
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adcl $0,CPUVAR(NTRAP)+4
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call _C_LABEL(fputrap)
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addl $4,%esp
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jmp _C_LABEL(trapreturn)
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jmp .Lalltraps_checkusr
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IDTVEC_END(trap10)
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IDTVEC(trap11)
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@ -394,13 +394,14 @@ IDTVEC_END(tss_trap08)
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.type _C_LABEL(trap_return_fault_return),@function
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LABEL(trap_return_fault_return)
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mov 4(%esp),%esp /* frame for user return */
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jmp _C_LABEL(trapreturn)
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jmp .Lalltraps_checkusr
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END(trap_return_fault_return)
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/* LINTSTUB: Ignore */
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ENTRY(alltraps)
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INTRENTRY
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STI(%eax)
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calltrap:
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#ifdef DIAGNOSTIC
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movl CPUVAR(ILEVEL),%ebx
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@ -410,16 +411,18 @@ calltrap:
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pushl %esp
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call _C_LABEL(trap)
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addl $4,%esp
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_C_LABEL(trapreturn): .globl trapreturn
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.Lalltraps_checkusr:
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testb $CHK_UPL,TF_CS(%esp)
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jnz .Lalltraps_checkast
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jmp 6f
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.Lalltraps_checkast:
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/* Check for ASTs on exit to user mode. */
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CLI(%eax)
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CHECK_ASTPENDING(%eax)
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jz 3f
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5: CLEAR_ASTPENDING(%eax)
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CLEAR_ASTPENDING(%eax)
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STI(%eax)
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movl $T_ASTFLT,TF_TRAPNO(%esp)
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addl $1,CPUVAR(NTRAP) /* statistical info */
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@ -430,6 +433,7 @@ _C_LABEL(trapreturn): .globl trapreturn
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jmp .Lalltraps_checkast /* re-check ASTs */
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3: CHECK_DEFERRED_SWITCH
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jnz 9f
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#ifdef XEN
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STIC(%eax)
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jz 6f
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@ -450,15 +454,23 @@ _C_LABEL(trapreturn): .globl trapreturn
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movl CPUVAR(XSOURCES)(,%eax,4),%eax
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jmp *IS_RESUME(%eax)
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7: movl %ebx,CPUVAR(ILEVEL) /* restore cpl */
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jmp _C_LABEL(trapreturn)
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#endif /* XEN */
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#ifndef DIAGNOSTIC
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6: INTRFASTEXIT
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#else
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6: cmpl CPUVAR(ILEVEL),%ebx
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jne 3f
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jmp .Lalltraps_checkusr
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#endif
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6:
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#ifdef DIAGNOSTIC
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cmpl CPUVAR(ILEVEL),%ebx
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jne .Lspl_error
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#endif
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INTRFASTEXIT
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3: STI(%eax)
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9: STI(%eax)
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call _C_LABEL(pmap_load)
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jmp .Lalltraps_checkast /* re-check ASTs */
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#ifdef DIAGNOSTIC
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.Lspl_error:
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STI(%eax)
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pushl $4f
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call _C_LABEL(panic)
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addl $4,%esp
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@ -467,8 +479,5 @@ _C_LABEL(trapreturn): .globl trapreturn
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addl $4,%esp
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jmp .Lalltraps_checkast /* re-check ASTs */
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4: .asciz "SPL NOT LOWERED ON TRAP EXIT\n"
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#endif /* DIAGNOSTIC */
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9: STI(%eax)
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call _C_LABEL(pmap_load)
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jmp .Lalltraps_checkast /* re-check ASTs */
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#endif
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END(alltraps)
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@ -1,4 +1,4 @@
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/* $NetBSD: locore.S,v 1.170 2019/10/04 11:47:07 maxv Exp $ */
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/* $NetBSD: locore.S,v 1.171 2019/10/04 15:28:00 maxv Exp $ */
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/*
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* Copyright-o-rama!
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@ -128,7 +128,7 @@
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*/
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#include <machine/asm.h>
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__KERNEL_RCSID(0, "$NetBSD: locore.S,v 1.170 2019/10/04 11:47:07 maxv Exp $");
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__KERNEL_RCSID(0, "$NetBSD: locore.S,v 1.171 2019/10/04 15:28:00 maxv Exp $");
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#include "opt_copy_symtab.h"
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#include "opt_ddb.h"
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@ -1264,6 +1264,7 @@ IDTVEC(syscall)
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pushl $T_ASTFLT /* trap # for doing ASTs */
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INTRENTRY
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STI(%eax)
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#ifdef DIAGNOSTIC
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movl CPUVAR(ILEVEL),%ebx
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testl %ebx,%ebx
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@ -1276,6 +1277,7 @@ IDTVEC(syscall)
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#endif
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1:
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#endif /* DIAGNOSTIC */
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addl $1,CPUVAR(NSYSCALL) /* count it atomically */
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adcl $0,CPUVAR(NSYSCALL)+4 /* count it atomically */
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movl CPUVAR(CURLWP),%edi
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@ -1290,6 +1292,7 @@ IDTVEC(syscall)
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movl L_MD_ASTPENDING(%edi), %eax
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orl CPUVAR(WANT_PMAPLOAD), %eax
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jnz 9f
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#ifdef XEN
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STIC(%eax)
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jz 14f
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@ -1313,12 +1316,15 @@ IDTVEC(syscall)
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jmp .Lsyscall_checkast
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14:
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#endif /* XEN */
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#ifndef DIAGNOSTIC
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INTRFASTEXIT
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#else /* DIAGNOSTIC */
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#ifdef DIAGNOSTIC
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cmpl $IPL_NONE,CPUVAR(ILEVEL)
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jne 3f
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#endif
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INTRFASTEXIT
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#ifdef DIAGNOSTIC
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3: STI(%eax)
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pushl $4f
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call _C_LABEL(panic)
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@ -1329,7 +1335,8 @@ IDTVEC(syscall)
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jmp .Lsyscall_checkast
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4: .asciz "SPL NOT LOWERED ON SYSCALL EXIT\n"
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5: .asciz "SPL NOT ZERO ON SYSCALL ENTRY\n"
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#endif /* DIAGNOSTIC */
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#endif
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9:
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cmpl $0, CPUVAR(WANT_PMAPLOAD)
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jz 10f
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@ -1,4 +1,4 @@
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/* $NetBSD: spl.S,v 1.47 2019/02/11 14:59:32 cherry Exp $ */
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/* $NetBSD: spl.S,v 1.48 2019/10/04 15:28:00 maxv Exp $ */
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/*
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* Copyright (c) 1998, 2007, 2008 The NetBSD Foundation, Inc.
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@ -30,7 +30,7 @@
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*/
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#include <machine/asm.h>
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__KERNEL_RCSID(0, "$NetBSD: spl.S,v 1.47 2019/02/11 14:59:32 cherry Exp $");
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__KERNEL_RCSID(0, "$NetBSD: spl.S,v 1.48 2019/10/04 15:28:00 maxv Exp $");
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#include "opt_ddb.h"
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#include "opt_spldebug.h"
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@ -265,6 +265,7 @@ IDTVEC(doreti)
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.Ldoreti_resume_stic:
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movl $.Ldoreti_resume,%esi /* address to resume loop at */
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.Ldoreti_resume:
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#if defined(DEBUG)
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#ifndef XENPV
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pushf
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@ -278,6 +279,7 @@ IDTVEC(doreti)
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jz .Ldoreti_panic
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#endif /* XENPV */
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#endif /* defined(DEBUG) */
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#if !defined(XENPV)
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movl %ebx,%eax
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movl CPUVAR(IUNMASK)(,%eax,4),%eax
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@ -288,8 +290,8 @@ IDTVEC(doreti)
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movl CPUVAR(ISOURCES)(,%eax, 4),%eax
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jmp *IS_RESUME(%eax)
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#endif
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2: /* Check for ASTs on exit to user mode. */
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#if defined(XEN)
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2:
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#if defined(XEN)
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movl %ebx,%eax
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movl CPUVAR(XUNMASK)(,%eax,4),%eax
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andl CPUVAR(XPENDING),%eax
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@ -299,12 +301,13 @@ IDTVEC(doreti)
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movl CPUVAR(XSOURCES)(,%eax, 4),%eax
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jmp *IS_RESUME(%eax)
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#endif
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3:
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3: /* Check for ASTs on exit to user mode. */
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movl %ebx,CPUVAR(ILEVEL)
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5:
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testb $CHK_UPL,TF_CS(%esp)
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jnz doreti_checkast
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jmp 6f
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.type _C_LABEL(doreti_checkast), @function
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LABEL(doreti_checkast)
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CHECK_ASTPENDING(%eax)
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@ -340,6 +343,7 @@ END(doreti_checkast)
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call _C_LABEL(pmap_load)
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CLI(%eax)
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jmp doreti_checkast /* recheck ASTs */
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#if defined(DEBUG)
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.Ldoreti_panic:
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pushl $1f
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