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https://github.com/freebsd/freebsd-src.git
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No longer use an i386tss as the basis of our pcb - it wasn't particularly
convenient and makes life difficult for my next commit. We still need an i386tss to point to for the tss slot in the gdt, so we use a common tss shared between all processes. Note that this is going to break debugging until this series of commits is finished. core dumps will change again too. :-( we really need a more modern core dump format that doesn't depend on the pcb/upages. This change makes VM86 mode harder, but the following commits will remove a lot of constraints for the VM86 system, including the possibility of extending the pcb for an IO port map etc. Obtained from: bde
This commit is contained in:
Peter Wemm
parent
267bc040ef
commit
271b264e4c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=24690
@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)genassym.c 5.11 (Berkeley) 5/10/91
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* $Id$
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* $Id: genassym.c,v 1.42 1997/02/22 09:32:18 peter Exp $
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*/
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#include <stdio.h>
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@ -120,33 +120,14 @@ main()
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printf("#define\tVM_MAXUSER_ADDRESS 0x%lx\n", VM_MAXUSER_ADDRESS);
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printf("#define\tKERNBASE 0x%x\n", KERNBASE);
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printf("#define\tMCLBYTES %d\n", MCLBYTES);
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printf("#define\tPCB_LINK %p\n", &pcb->pcb_tss.tss_link);
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printf("#define\tPCB_ESP0 %p\n", &pcb->pcb_tss.tss_esp0);
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printf("#define\tPCB_SS0 %p\n", &pcb->pcb_tss.tss_ss0);
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printf("#define\tPCB_ESP1 %p\n", &pcb->pcb_tss.tss_esp1);
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printf("#define\tPCB_SS1 %p\n", &pcb->pcb_tss.tss_ss1);
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printf("#define\tPCB_ESP2 %p\n", &pcb->pcb_tss.tss_esp2);
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printf("#define\tPCB_SS2 %p\n", &pcb->pcb_tss.tss_ss2);
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printf("#define\tPCB_CR3 %p\n", &pcb->pcb_tss.tss_cr3);
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printf("#define\tPCB_EIP %p\n", &pcb->pcb_tss.tss_eip);
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printf("#define\tPCB_EFLAGS %p\n", &pcb->pcb_tss.tss_eflags);
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printf("#define\tPCB_EAX %p\n", &pcb->pcb_tss.tss_eax);
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printf("#define\tPCB_ECX %p\n", &pcb->pcb_tss.tss_ecx);
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printf("#define\tPCB_EDX %p\n", &pcb->pcb_tss.tss_edx);
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printf("#define\tPCB_EBX %p\n", &pcb->pcb_tss.tss_ebx);
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printf("#define\tPCB_ESP %p\n", &pcb->pcb_tss.tss_esp);
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printf("#define\tPCB_EBP %p\n", &pcb->pcb_tss.tss_ebp);
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printf("#define\tPCB_ESI %p\n", &pcb->pcb_tss.tss_esi);
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printf("#define\tPCB_EDI %p\n", &pcb->pcb_tss.tss_edi);
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printf("#define\tPCB_ES %p\n", &pcb->pcb_tss.tss_es);
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printf("#define\tPCB_CS %p\n", &pcb->pcb_tss.tss_cs);
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printf("#define\tPCB_SS %p\n", &pcb->pcb_tss.tss_ss);
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printf("#define\tPCB_DS %p\n", &pcb->pcb_tss.tss_ds);
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printf("#define\tPCB_FS %p\n", &pcb->pcb_tss.tss_fs);
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printf("#define\tPCB_GS %p\n", &pcb->pcb_tss.tss_gs);
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printf("#define\tPCB_LDT %p\n", &pcb->pcb_tss.tss_ldt);
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printf("#define\tPCB_CR3 %p\n", &pcb->pcb_cr3);
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printf("#define\tPCB_EDI %p\n", &pcb->pcb_edi);
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printf("#define\tPCB_ESI %p\n", &pcb->pcb_esi);
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printf("#define\tPCB_EBP %p\n", &pcb->pcb_ebp);
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printf("#define\tPCB_ESP %p\n", &pcb->pcb_esp);
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printf("#define\tPCB_EBX %p\n", &pcb->pcb_ebx);
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printf("#define\tPCB_EIP %p\n", &pcb->pcb_eip);
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printf("#define\tPCB_USERLDT %p\n", &pcb->pcb_ldt);
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printf("#define\tPCB_IOOPT %p\n", &pcb->pcb_tss.tss_ioopt);
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printf("#define\tU_PROF %p\n", &up->u_stats.p_prof);
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printf("#define\tU_PROFSCALE %p\n", &up->u_stats.p_prof.pr_scale);
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printf("#define\tPR_BASE %p\n", &uprof->pr_base);
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
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* $Id: machdep.c,v 1.233 1997/03/28 12:37:44 joerg Exp $
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* $Id: machdep.c,v 1.234 1997/03/31 11:10:37 davidg Exp $
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*/
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#include "npx.h"
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@ -748,6 +748,7 @@ int _default_ldt;
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union descriptor gdt[NGDT]; /* global descriptor table */
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struct gate_descriptor idt[NIDT]; /* interrupt descriptor table */
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union descriptor ldt[NLDT]; /* local descriptor table */
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struct i386tss common_tss;
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static struct i386tss dblfault_tss;
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static char dblfault_stack[PAGE_SIZE];
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@ -787,7 +788,7 @@ struct soft_segment_descriptor gdt_segs[] = {
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{ (int) ldt, /* segment base address */
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sizeof(ldt)-1, /* length - all address space */
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SDT_SYSLDT, /* segment type */
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0, /* segment descriptor priority level */
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SEL_UPL, /* segment descriptor priority level */
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1, /* segment descriptor present */
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0, 0,
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0, /* unused - default 32 vs 16 bit size */
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@ -811,7 +812,7 @@ struct soft_segment_descriptor gdt_segs[] = {
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0, /* unused - default 32 vs 16 bit size */
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0 /* limit granularity (byte/page units)*/ },
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/* GPROC0_SEL 6 Proc 0 Tss Descriptor */
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{ (int) kstack, /* segment base address */
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{ (int) &common_tss, /* segment base address */
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sizeof(struct i386tss)-1,/* length - all address space */
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SDT_SYS386TSS, /* segment type */
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0, /* segment descriptor priority level */
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@ -1300,9 +1301,11 @@ init386(first)
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msgbufmapped = 1;
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/* make a initial tss so microp can get interrupt stack on syscall! */
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proc0.p_addr->u_pcb.pcb_tss.tss_esp0 = (int) kstack + UPAGES*PAGE_SIZE;
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proc0.p_addr->u_pcb.pcb_tss.tss_ss0 = GSEL(GDATA_SEL, SEL_KPL) ;
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common_tss.tss_esp0 = (int) kstack + UPAGES*PAGE_SIZE;
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common_tss.tss_ss0 = GSEL(GDATA_SEL, SEL_KPL) ;
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common_tss.tss_ioopt = (sizeof common_tss) << 16;
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gsel_tss = GSEL(GPROC0_SEL, SEL_KPL);
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ltr(gsel_tss);
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dblfault_tss.tss_esp = dblfault_tss.tss_esp0 = dblfault_tss.tss_esp1 =
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dblfault_tss.tss_esp2 = (int) &dblfault_stack[sizeof(dblfault_stack)];
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@ -1316,11 +1319,6 @@ init386(first)
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dblfault_tss.tss_cs = GSEL(GCODE_SEL, SEL_KPL);
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dblfault_tss.tss_ldt = GSEL(GLDT_SEL, SEL_KPL);
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((struct i386tss *)gdt_segs[GPROC0_SEL].ssd_base)->tss_ioopt =
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(sizeof(struct i386tss))<<16;
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ltr(gsel_tss);
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/* make a call gate to reenter kernel with */
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gdp = &ldt[LSYS5CALLS_SEL].gd;
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)trap.c 7.4 (Berkeley) 5/13/91
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* $Id: trap.c,v 1.88 1997/02/22 09:32:55 peter Exp $
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* $Id: trap.c,v 1.89 1997/04/06 02:29:19 dyson Exp $
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*/
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/*
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@ -763,9 +763,9 @@ dblfault_handler()
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if (pcb != NULL) {
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printf("\nFatal double fault:\n");
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printf("eip = 0x%x\n", pcb->pcb_tss.tss_eip);
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printf("esp = 0x%x\n", pcb->pcb_tss.tss_esp);
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printf("ebp = 0x%x\n", pcb->pcb_tss.tss_ebp);
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printf("eip = 0x%x\n", pcb->pcb_eip);
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printf("esp = 0x%x\n", pcb->pcb_esp);
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printf("ebp = 0x%x\n", pcb->pcb_ebp);
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}
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panic("double fault");
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
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* $Id$
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* $Id: pcb.h,v 1.18 1997/02/22 09:34:56 peter Exp $
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*/
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#ifndef _I386_PCB_H_
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@ -47,26 +47,23 @@
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#include <machine/npx.h>
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struct pcb {
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struct i386tss pcb_tss;
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#define pcb_ksp pcb_tss.tss_esp0
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#define pcb_ptd pcb_tss.tss_cr3
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#define pcb_cr3 pcb_ptd
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#define pcb_pc pcb_tss.tss_eip
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#define pcb_psl pcb_tss.tss_eflags
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#define pcb_usp pcb_tss.tss_esp
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#define pcb_fp pcb_tss.tss_ebp
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#ifdef notyet
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u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
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#endif
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int pcb_cr3;
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int pcb_edi;
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int pcb_esi;
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int pcb_ebp;
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int pcb_esp;
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int pcb_ebx;
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int pcb_eip;
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caddr_t pcb_ldt; /* per process (user) LDT */
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int pcb_ldt_len; /* number of LDT entries */
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struct save87 pcb_savefpu; /* floating point state for 287/387 */
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/*
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* Software pcb (extension)
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*/
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u_char pcb_flags;
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#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
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caddr_t pcb_onfault; /* copyin/out fault recovery */
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#if 0 /* some day we may switch between procs that have their own i386tss */
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struct i386tss pcb_tss;
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u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
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#endif
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};
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/*
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)genassym.c 5.11 (Berkeley) 5/10/91
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* $Id$
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* $Id: genassym.c,v 1.42 1997/02/22 09:32:18 peter Exp $
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*/
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#include <stdio.h>
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@ -120,33 +120,14 @@ main()
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printf("#define\tVM_MAXUSER_ADDRESS 0x%lx\n", VM_MAXUSER_ADDRESS);
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printf("#define\tKERNBASE 0x%x\n", KERNBASE);
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printf("#define\tMCLBYTES %d\n", MCLBYTES);
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printf("#define\tPCB_LINK %p\n", &pcb->pcb_tss.tss_link);
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printf("#define\tPCB_ESP0 %p\n", &pcb->pcb_tss.tss_esp0);
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printf("#define\tPCB_SS0 %p\n", &pcb->pcb_tss.tss_ss0);
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printf("#define\tPCB_ESP1 %p\n", &pcb->pcb_tss.tss_esp1);
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printf("#define\tPCB_SS1 %p\n", &pcb->pcb_tss.tss_ss1);
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printf("#define\tPCB_ESP2 %p\n", &pcb->pcb_tss.tss_esp2);
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printf("#define\tPCB_SS2 %p\n", &pcb->pcb_tss.tss_ss2);
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printf("#define\tPCB_CR3 %p\n", &pcb->pcb_tss.tss_cr3);
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printf("#define\tPCB_EIP %p\n", &pcb->pcb_tss.tss_eip);
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printf("#define\tPCB_EFLAGS %p\n", &pcb->pcb_tss.tss_eflags);
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printf("#define\tPCB_EAX %p\n", &pcb->pcb_tss.tss_eax);
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printf("#define\tPCB_ECX %p\n", &pcb->pcb_tss.tss_ecx);
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printf("#define\tPCB_EDX %p\n", &pcb->pcb_tss.tss_edx);
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printf("#define\tPCB_EBX %p\n", &pcb->pcb_tss.tss_ebx);
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printf("#define\tPCB_ESP %p\n", &pcb->pcb_tss.tss_esp);
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printf("#define\tPCB_EBP %p\n", &pcb->pcb_tss.tss_ebp);
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printf("#define\tPCB_ESI %p\n", &pcb->pcb_tss.tss_esi);
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printf("#define\tPCB_EDI %p\n", &pcb->pcb_tss.tss_edi);
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printf("#define\tPCB_ES %p\n", &pcb->pcb_tss.tss_es);
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printf("#define\tPCB_CS %p\n", &pcb->pcb_tss.tss_cs);
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printf("#define\tPCB_SS %p\n", &pcb->pcb_tss.tss_ss);
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printf("#define\tPCB_DS %p\n", &pcb->pcb_tss.tss_ds);
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printf("#define\tPCB_FS %p\n", &pcb->pcb_tss.tss_fs);
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printf("#define\tPCB_GS %p\n", &pcb->pcb_tss.tss_gs);
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printf("#define\tPCB_LDT %p\n", &pcb->pcb_tss.tss_ldt);
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printf("#define\tPCB_CR3 %p\n", &pcb->pcb_cr3);
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printf("#define\tPCB_EDI %p\n", &pcb->pcb_edi);
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printf("#define\tPCB_ESI %p\n", &pcb->pcb_esi);
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printf("#define\tPCB_EBP %p\n", &pcb->pcb_ebp);
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printf("#define\tPCB_ESP %p\n", &pcb->pcb_esp);
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printf("#define\tPCB_EBX %p\n", &pcb->pcb_ebx);
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printf("#define\tPCB_EIP %p\n", &pcb->pcb_eip);
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printf("#define\tPCB_USERLDT %p\n", &pcb->pcb_ldt);
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printf("#define\tPCB_IOOPT %p\n", &pcb->pcb_tss.tss_ioopt);
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printf("#define\tU_PROF %p\n", &up->u_stats.p_prof);
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printf("#define\tU_PROFSCALE %p\n", &up->u_stats.p_prof.pr_scale);
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printf("#define\tPR_BASE %p\n", &uprof->pr_base);
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
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* $Id: machdep.c,v 1.233 1997/03/28 12:37:44 joerg Exp $
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* $Id: machdep.c,v 1.234 1997/03/31 11:10:37 davidg Exp $
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*/
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#include "npx.h"
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@ -748,6 +748,7 @@ int _default_ldt;
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union descriptor gdt[NGDT]; /* global descriptor table */
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struct gate_descriptor idt[NIDT]; /* interrupt descriptor table */
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union descriptor ldt[NLDT]; /* local descriptor table */
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struct i386tss common_tss;
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static struct i386tss dblfault_tss;
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static char dblfault_stack[PAGE_SIZE];
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@ -787,7 +788,7 @@ struct soft_segment_descriptor gdt_segs[] = {
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{ (int) ldt, /* segment base address */
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sizeof(ldt)-1, /* length - all address space */
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SDT_SYSLDT, /* segment type */
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0, /* segment descriptor priority level */
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SEL_UPL, /* segment descriptor priority level */
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1, /* segment descriptor present */
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0, 0,
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0, /* unused - default 32 vs 16 bit size */
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@ -811,7 +812,7 @@ struct soft_segment_descriptor gdt_segs[] = {
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0, /* unused - default 32 vs 16 bit size */
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0 /* limit granularity (byte/page units)*/ },
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/* GPROC0_SEL 6 Proc 0 Tss Descriptor */
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{ (int) kstack, /* segment base address */
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{ (int) &common_tss, /* segment base address */
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sizeof(struct i386tss)-1,/* length - all address space */
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SDT_SYS386TSS, /* segment type */
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0, /* segment descriptor priority level */
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@ -1300,9 +1301,11 @@ init386(first)
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msgbufmapped = 1;
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/* make a initial tss so microp can get interrupt stack on syscall! */
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proc0.p_addr->u_pcb.pcb_tss.tss_esp0 = (int) kstack + UPAGES*PAGE_SIZE;
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proc0.p_addr->u_pcb.pcb_tss.tss_ss0 = GSEL(GDATA_SEL, SEL_KPL) ;
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common_tss.tss_esp0 = (int) kstack + UPAGES*PAGE_SIZE;
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common_tss.tss_ss0 = GSEL(GDATA_SEL, SEL_KPL) ;
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common_tss.tss_ioopt = (sizeof common_tss) << 16;
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gsel_tss = GSEL(GPROC0_SEL, SEL_KPL);
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ltr(gsel_tss);
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dblfault_tss.tss_esp = dblfault_tss.tss_esp0 = dblfault_tss.tss_esp1 =
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dblfault_tss.tss_esp2 = (int) &dblfault_stack[sizeof(dblfault_stack)];
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@ -1316,11 +1319,6 @@ init386(first)
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dblfault_tss.tss_cs = GSEL(GCODE_SEL, SEL_KPL);
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dblfault_tss.tss_ldt = GSEL(GLDT_SEL, SEL_KPL);
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((struct i386tss *)gdt_segs[GPROC0_SEL].ssd_base)->tss_ioopt =
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(sizeof(struct i386tss))<<16;
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ltr(gsel_tss);
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/* make a call gate to reenter kernel with */
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gdp = &ldt[LSYS5CALLS_SEL].gd;
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)trap.c 7.4 (Berkeley) 5/13/91
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* $Id: trap.c,v 1.88 1997/02/22 09:32:55 peter Exp $
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* $Id: trap.c,v 1.89 1997/04/06 02:29:19 dyson Exp $
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*/
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/*
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@ -763,9 +763,9 @@ dblfault_handler()
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if (pcb != NULL) {
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printf("\nFatal double fault:\n");
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printf("eip = 0x%x\n", pcb->pcb_tss.tss_eip);
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printf("esp = 0x%x\n", pcb->pcb_tss.tss_esp);
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printf("ebp = 0x%x\n", pcb->pcb_tss.tss_ebp);
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printf("eip = 0x%x\n", pcb->pcb_eip);
|
||||
printf("esp = 0x%x\n", pcb->pcb_esp);
|
||||
printf("ebp = 0x%x\n", pcb->pcb_ebp);
|
||||
}
|
||||
|
||||
panic("double fault");
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
|
||||
* $Id$
|
||||
* $Id: pcb.h,v 1.18 1997/02/22 09:34:56 peter Exp $
|
||||
*/
|
||||
|
||||
#ifndef _I386_PCB_H_
|
||||
@ -47,26 +47,23 @@
|
||||
#include <machine/npx.h>
|
||||
|
||||
struct pcb {
|
||||
struct i386tss pcb_tss;
|
||||
#define pcb_ksp pcb_tss.tss_esp0
|
||||
#define pcb_ptd pcb_tss.tss_cr3
|
||||
#define pcb_cr3 pcb_ptd
|
||||
#define pcb_pc pcb_tss.tss_eip
|
||||
#define pcb_psl pcb_tss.tss_eflags
|
||||
#define pcb_usp pcb_tss.tss_esp
|
||||
#define pcb_fp pcb_tss.tss_ebp
|
||||
#ifdef notyet
|
||||
u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
|
||||
#endif
|
||||
int pcb_cr3;
|
||||
int pcb_edi;
|
||||
int pcb_esi;
|
||||
int pcb_ebp;
|
||||
int pcb_esp;
|
||||
int pcb_ebx;
|
||||
int pcb_eip;
|
||||
caddr_t pcb_ldt; /* per process (user) LDT */
|
||||
int pcb_ldt_len; /* number of LDT entries */
|
||||
struct save87 pcb_savefpu; /* floating point state for 287/387 */
|
||||
/*
|
||||
* Software pcb (extension)
|
||||
*/
|
||||
u_char pcb_flags;
|
||||
#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
|
||||
caddr_t pcb_onfault; /* copyin/out fault recovery */
|
||||
#if 0 /* some day we may switch between procs that have their own i386tss */
|
||||
struct i386tss pcb_tss;
|
||||
u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
|
||||
@ -35,7 +35,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)trap.c 7.4 (Berkeley) 5/13/91
|
||||
* $Id: trap.c,v 1.88 1997/02/22 09:32:55 peter Exp $
|
||||
* $Id: trap.c,v 1.89 1997/04/06 02:29:19 dyson Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -763,9 +763,9 @@ dblfault_handler()
|
||||
|
||||
if (pcb != NULL) {
|
||||
printf("\nFatal double fault:\n");
|
||||
printf("eip = 0x%x\n", pcb->pcb_tss.tss_eip);
|
||||
printf("esp = 0x%x\n", pcb->pcb_tss.tss_esp);
|
||||
printf("ebp = 0x%x\n", pcb->pcb_tss.tss_ebp);
|
||||
printf("eip = 0x%x\n", pcb->pcb_eip);
|
||||
printf("esp = 0x%x\n", pcb->pcb_esp);
|
||||
printf("ebp = 0x%x\n", pcb->pcb_ebp);
|
||||
}
|
||||
|
||||
panic("double fault");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user