mirror of
https://github.com/freebsd/freebsd-src
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Include all of isa/ipl.s into exception.s as there is now nothing left in
ipl.s except doreti which really belongs in with the exceptions as it's just the other side of the same coin. Will remove ipl.s in a separate commit. Agreed by: several including bde@freebsd.org
This commit is contained in:
Julian Elischer
parent
04b401aa8a
commit
f55348f07c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=99703
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@ -1,4 +1,5 @@
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/*-
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* Copyright (c) 1989, 1990 William F. Jolitz.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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@ -264,15 +265,103 @@ ENTRY(fork_trampoline)
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*/
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#include "i386/isa/vector.s"
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/*
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* Include what was once icu-dependent code.
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* XXX it should be merged into this file (also move the definition of
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* imen to vector.s or isa.c).
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* Before including it, set up a normal asm environment so that vector.s
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* doesn't have to know that stuff is included after it.
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*/
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.data
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ALIGN_DATA
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/*
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* void doreti(struct trapframe)
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*
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* Handle return from interrupts, traps and syscalls.
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*/
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.text
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SUPERALIGN_TEXT
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#include "i386/isa/ipl.s"
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.type doreti,@function
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doreti:
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FAKE_MCOUNT(bintr) /* init "from" bintr -> doreti */
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doreti_next:
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/*
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* Check if ASTs can be handled now. PSL_VM must be checked first
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* since segment registers only have an RPL in non-VM86 mode.
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*/
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testl $PSL_VM,TF_EFLAGS(%esp) /* are we in vm86 mode? */
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jz doreti_notvm86
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cmpl $1,in_vm86call /* are we in a vm86 call? */
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jne doreti_ast /* can handle ASTs now if not */
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jmp doreti_exit
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doreti_notvm86:
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testb $SEL_RPL_MASK,TF_CS(%esp) /* are we in user mode? */
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jz doreti_exit /* can't handle ASTs now if not */
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doreti_ast:
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/*
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* Check for ASTs atomically with returning. Disabling CPU
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* interrupts provides sufficient locking evein the SMP case,
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* since we will be informed of any new ASTs by an IPI.
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*/
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cli
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movl PCPU(CURTHREAD),%eax
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movl TD_KSE(%eax), %eax
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testl $KEF_ASTPENDING | KEF_NEEDRESCHED,KE_FLAGS(%eax)
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je doreti_exit
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sti
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pushl %esp /* pass a pointer to the trapframe */
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call ast
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add $4,%esp
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jmp doreti_ast
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/*
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* doreti_exit: pop registers, iret.
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*
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* The segment register pop is a special case, since it may
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* fault if (for example) a sigreturn specifies bad segment
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* registers. The fault is handled in trap.c.
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*/
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doreti_exit:
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MEXITCOUNT
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.globl doreti_popl_fs
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doreti_popl_fs:
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popl %fs
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.globl doreti_popl_es
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doreti_popl_es:
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popl %es
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.globl doreti_popl_ds
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doreti_popl_ds:
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popl %ds
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popal
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addl $8,%esp
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.globl doreti_iret
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doreti_iret:
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iret
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/*
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* doreti_iret_fault and friends. Alternative return code for
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* the case where we get a fault in the doreti_exit code
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* above. trap() (i386/i386/trap.c) catches this specific
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* case, sends the process a signal and continues in the
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* corresponding place in the code below.
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*/
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ALIGN_TEXT
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.globl doreti_iret_fault
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doreti_iret_fault:
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subl $8,%esp
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pushal
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pushl %ds
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.globl doreti_popl_ds_fault
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doreti_popl_ds_fault:
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pushl %es
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.globl doreti_popl_es_fault
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doreti_popl_es_fault:
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pushl %fs
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.globl doreti_popl_fs_fault
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doreti_popl_fs_fault:
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movl $0,TF_ERR(%esp) /* XXX should be the error code */
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movl $T_PROTFLT,TF_TRAPNO(%esp)
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jmp alltraps_with_regs_pushed
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#ifdef APIC_IO
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#include "i386/isa/apic_ipl.s"
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#else
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#include "i386/isa/icu_ipl.s"
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#endif /* APIC_IO */
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@ -1,4 +1,5 @@
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/*-
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* Copyright (c) 1989, 1990 William F. Jolitz.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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@ -264,15 +265,103 @@ ENTRY(fork_trampoline)
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*/
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#include "i386/isa/vector.s"
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/*
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* Include what was once icu-dependent code.
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* XXX it should be merged into this file (also move the definition of
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* imen to vector.s or isa.c).
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* Before including it, set up a normal asm environment so that vector.s
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* doesn't have to know that stuff is included after it.
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*/
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.data
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ALIGN_DATA
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/*
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* void doreti(struct trapframe)
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*
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* Handle return from interrupts, traps and syscalls.
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*/
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.text
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SUPERALIGN_TEXT
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#include "i386/isa/ipl.s"
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.type doreti,@function
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doreti:
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FAKE_MCOUNT(bintr) /* init "from" bintr -> doreti */
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doreti_next:
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/*
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* Check if ASTs can be handled now. PSL_VM must be checked first
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* since segment registers only have an RPL in non-VM86 mode.
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*/
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testl $PSL_VM,TF_EFLAGS(%esp) /* are we in vm86 mode? */
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jz doreti_notvm86
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cmpl $1,in_vm86call /* are we in a vm86 call? */
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jne doreti_ast /* can handle ASTs now if not */
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jmp doreti_exit
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doreti_notvm86:
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testb $SEL_RPL_MASK,TF_CS(%esp) /* are we in user mode? */
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jz doreti_exit /* can't handle ASTs now if not */
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doreti_ast:
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/*
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* Check for ASTs atomically with returning. Disabling CPU
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* interrupts provides sufficient locking evein the SMP case,
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* since we will be informed of any new ASTs by an IPI.
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*/
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cli
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movl PCPU(CURTHREAD),%eax
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movl TD_KSE(%eax), %eax
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testl $KEF_ASTPENDING | KEF_NEEDRESCHED,KE_FLAGS(%eax)
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je doreti_exit
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sti
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pushl %esp /* pass a pointer to the trapframe */
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call ast
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add $4,%esp
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jmp doreti_ast
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/*
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* doreti_exit: pop registers, iret.
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*
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* The segment register pop is a special case, since it may
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* fault if (for example) a sigreturn specifies bad segment
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* registers. The fault is handled in trap.c.
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*/
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doreti_exit:
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MEXITCOUNT
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.globl doreti_popl_fs
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doreti_popl_fs:
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popl %fs
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.globl doreti_popl_es
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doreti_popl_es:
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popl %es
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.globl doreti_popl_ds
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doreti_popl_ds:
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popl %ds
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popal
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addl $8,%esp
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.globl doreti_iret
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doreti_iret:
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iret
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/*
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* doreti_iret_fault and friends. Alternative return code for
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* the case where we get a fault in the doreti_exit code
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* above. trap() (i386/i386/trap.c) catches this specific
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* case, sends the process a signal and continues in the
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* corresponding place in the code below.
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*/
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ALIGN_TEXT
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.globl doreti_iret_fault
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doreti_iret_fault:
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subl $8,%esp
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pushal
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pushl %ds
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.globl doreti_popl_ds_fault
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doreti_popl_ds_fault:
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pushl %es
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.globl doreti_popl_es_fault
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doreti_popl_es_fault:
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pushl %fs
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.globl doreti_popl_fs_fault
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doreti_popl_fs_fault:
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movl $0,TF_ERR(%esp) /* XXX should be the error code */
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movl $T_PROTFLT,TF_TRAPNO(%esp)
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jmp alltraps_with_regs_pushed
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#ifdef APIC_IO
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#include "i386/isa/apic_ipl.s"
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#else
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#include "i386/isa/icu_ipl.s"
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#endif /* APIC_IO */
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@ -1,4 +1,5 @@
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/*-
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* Copyright (c) 1989, 1990 William F. Jolitz.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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@ -264,15 +265,103 @@ ENTRY(fork_trampoline)
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*/
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#include "i386/isa/vector.s"
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/*
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* Include what was once icu-dependent code.
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* XXX it should be merged into this file (also move the definition of
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* imen to vector.s or isa.c).
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* Before including it, set up a normal asm environment so that vector.s
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* doesn't have to know that stuff is included after it.
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*/
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.data
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ALIGN_DATA
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/*
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* void doreti(struct trapframe)
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*
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* Handle return from interrupts, traps and syscalls.
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*/
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.text
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SUPERALIGN_TEXT
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#include "i386/isa/ipl.s"
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.type doreti,@function
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doreti:
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FAKE_MCOUNT(bintr) /* init "from" bintr -> doreti */
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doreti_next:
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/*
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* Check if ASTs can be handled now. PSL_VM must be checked first
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* since segment registers only have an RPL in non-VM86 mode.
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*/
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testl $PSL_VM,TF_EFLAGS(%esp) /* are we in vm86 mode? */
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jz doreti_notvm86
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cmpl $1,in_vm86call /* are we in a vm86 call? */
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jne doreti_ast /* can handle ASTs now if not */
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jmp doreti_exit
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doreti_notvm86:
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testb $SEL_RPL_MASK,TF_CS(%esp) /* are we in user mode? */
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jz doreti_exit /* can't handle ASTs now if not */
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doreti_ast:
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/*
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* Check for ASTs atomically with returning. Disabling CPU
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* interrupts provides sufficient locking evein the SMP case,
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* since we will be informed of any new ASTs by an IPI.
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*/
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cli
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movl PCPU(CURTHREAD),%eax
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movl TD_KSE(%eax), %eax
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testl $KEF_ASTPENDING | KEF_NEEDRESCHED,KE_FLAGS(%eax)
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je doreti_exit
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sti
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pushl %esp /* pass a pointer to the trapframe */
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call ast
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add $4,%esp
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jmp doreti_ast
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/*
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* doreti_exit: pop registers, iret.
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*
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* The segment register pop is a special case, since it may
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* fault if (for example) a sigreturn specifies bad segment
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* registers. The fault is handled in trap.c.
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*/
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doreti_exit:
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MEXITCOUNT
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.globl doreti_popl_fs
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doreti_popl_fs:
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popl %fs
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.globl doreti_popl_es
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doreti_popl_es:
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popl %es
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.globl doreti_popl_ds
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doreti_popl_ds:
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popl %ds
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popal
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addl $8,%esp
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.globl doreti_iret
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doreti_iret:
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iret
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/*
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* doreti_iret_fault and friends. Alternative return code for
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* the case where we get a fault in the doreti_exit code
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* above. trap() (i386/i386/trap.c) catches this specific
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* case, sends the process a signal and continues in the
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* corresponding place in the code below.
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*/
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ALIGN_TEXT
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.globl doreti_iret_fault
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doreti_iret_fault:
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subl $8,%esp
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pushal
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pushl %ds
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.globl doreti_popl_ds_fault
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doreti_popl_ds_fault:
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pushl %es
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.globl doreti_popl_es_fault
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doreti_popl_es_fault:
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pushl %fs
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.globl doreti_popl_fs_fault
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doreti_popl_fs_fault:
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movl $0,TF_ERR(%esp) /* XXX should be the error code */
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movl $T_PROTFLT,TF_TRAPNO(%esp)
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jmp alltraps_with_regs_pushed
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#ifdef APIC_IO
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#include "i386/isa/apic_ipl.s"
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#else
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#include "i386/isa/icu_ipl.s"
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#endif /* APIC_IO */
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