version 1.20, 2003/11/04 10:33:15 |
version 1.21, 2004/01/04 11:44:52 |
Line 2028 ENTRY(cpu_switchto) |
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Line 2028 ENTRY(cpu_switchto) |
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jmp switch_resume |
jmp switch_resume |
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/* |
/* |
* void switch_exit(struct lwp *l, void (*exit)(struct lwp *)); |
* void cpu_exit(struct lwp *l) |
* Switch to the appropriate idle context (lwp0's if uniprocessor; the cpu's |
* Switch to the appropriate idle context (lwp0's if uniprocessor; the cpu's |
* if multiprocessor) and deallocate the address space and kernel stack for p. |
* if multiprocessor) and deallocate the address space and kernel stack for p. |
* Then jump into cpu_switch(), as if we were in the idle proc all along. |
* Then jump into cpu_switch(), as if we were in the idle proc all along. |
Line 2038 ENTRY(cpu_switchto) |
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Line 2038 ENTRY(cpu_switchto) |
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#endif |
#endif |
.globl _C_LABEL(uvmspace_free),_C_LABEL(kernel_map) |
.globl _C_LABEL(uvmspace_free),_C_LABEL(kernel_map) |
.globl _C_LABEL(uvm_km_free),_C_LABEL(tss_free) |
.globl _C_LABEL(uvm_km_free),_C_LABEL(tss_free) |
/* LINTSTUB: Func: void switch_exit(struct lwp *l, void (*exit)(struct lwp *)) */ |
/* LINTSTUB: Func: void cpu_exit(struct lwp *l) */ |
ENTRY(switch_exit) |
ENTRY(cpu_exit) |
movl 4(%esp),%edi # old process |
movl 4(%esp),%edi # old process |
movl 8(%esp),%eax # exit func |
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#ifndef MULTIPROCESSOR |
#ifndef MULTIPROCESSOR |
movl $_C_LABEL(lwp0),%ebx |
movl $_C_LABEL(lwp0),%ebx |
movl L_ADDR(%ebx),%esi |
movl L_ADDR(%ebx),%esi |
Line 2060 ENTRY(switch_exit) |
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Line 2059 ENTRY(switch_exit) |
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movl PCB_ESP(%esi),%esp |
movl PCB_ESP(%esi),%esp |
movl PCB_EBP(%esi),%ebp |
movl PCB_EBP(%esi),%ebp |
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/* Save exit func. */ |
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pushl %eax |
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/* Load TSS info. */ |
/* Load TSS info. */ |
#ifdef MULTIPROCESSOR |
#ifdef MULTIPROCESSOR |
movl CPUVAR(GDT),%eax |
movl CPUVAR(GDT),%eax |
Line 2092 ENTRY(switch_exit) |
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Line 2088 ENTRY(switch_exit) |
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sti |
sti |
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/* |
/* |
* Schedule the dead process's vmspace and stack to be freed. |
* Schedule the dead LWP's stack to be freed. |
*/ |
*/ |
movl 0(%esp),%eax /* %eax = exit func */ |
pushl %edi |
movl %edi,0(%esp) /* {lwp_}exit2(l) */ |
call _C_LABEL(lwp_exit2) |
call *%eax |
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addl $4,%esp |
addl $4,%esp |
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/* Jump into cpu_switch() with the right state. */ |
/* Jump into cpu_switch() with the right state. */ |