diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c deleted file mode 100644 index e99cde8da..000000000 --- a/nx-X11/programs/Xserver/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c +++ /dev/null @@ -1,302 +0,0 @@ -/* $XFree86$ */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include "xf86.h" -#include "xf86_OSproc.h" -#include "xf86_ansic.h" -#include "xf86Pci.h" -#include "compiler.h" -#define _INT10_PRIVATE -#include "xf86int10.h" - -#define REG pInt - -#ifdef _VM86_LINUX -#include "int10Defines.h" - -static int vm86_rep(struct vm86_struct *ptr); -static struct vm86_struct vm86_s; - -Bool -xf86Int10ExecSetup(xf86Int10InfoPtr pInt) -{ -#define VM86S ((struct vm86_struct *)pInt->cpuRegs) - - pInt->cpuRegs = &vm86_s; - VM86S->flags = 0; - VM86S->screen_bitmap = 0; - VM86S->cpu_type = CPU_586; - memset(&VM86S->int_revectored, 0xff, sizeof(VM86S->int_revectored)); - memset(&VM86S->int21_revectored, 0xff, sizeof(VM86S->int21_revectored)); - return TRUE; -} - -/* get the linear address */ -#define LIN_PREF_SI ((pref_seg << 4) + X86_SI) -#define LWECX ((prefix66 ^ prefix67) ? X86_ECX : X86_CX) -#define LWECX_ZERO {if (prefix66 ^ prefix67) X86_ECX = 0; else X86_CX = 0;} -#define DF (1 << 10) - -/* vm86 fault handling */ -static Bool -vm86_GP_fault(xf86Int10InfoPtr pInt) -{ - unsigned char *csp, *lina; - CARD32 org_eip; - int pref_seg; - int done, is_rep, prefix66, prefix67; - - csp = lina = SEG_ADR((unsigned char *), X86_CS, IP); - - is_rep = 0; - prefix66 = prefix67 = 0; - pref_seg = -1; - - /* eat up prefixes */ - done = 0; - do { - switch (MEM_RB(pInt, (int)csp++)) { - case 0x66: /* operand prefix */ prefix66=1; break; - case 0x67: /* address prefix */ prefix67=1; break; - case 0x2e: /* CS */ pref_seg=X86_CS; break; - case 0x3e: /* DS */ pref_seg=X86_DS; break; - case 0x26: /* ES */ pref_seg=X86_ES; break; - case 0x36: /* SS */ pref_seg=X86_SS; break; - case 0x65: /* GS */ pref_seg=X86_GS; break; - case 0x64: /* FS */ pref_seg=X86_FS; break; - case 0xf0: /* lock */ break; - case 0xf2: /* repnz */ - case 0xf3: /* rep */ is_rep=1; break; - default: done=1; - } - } while (!done); - csp--; /* oops one too many */ - org_eip = X86_EIP; - X86_IP += (csp - lina); - - switch (MEM_RB(pInt, (int)csp)) { - case 0x6c: /* insb */ - /* NOTE: ES can't be overwritten; prefixes 66,67 should use esi,edi,ecx - * but is anyone using extended regs in real mode? */ - /* WARNING: no test for DI wrapping! */ - X86_EDI += port_rep_inb(pInt, X86_DX, SEG_EADR((CARD32), X86_ES, DI), - X86_FLAGS & DF, is_rep ? LWECX : 1); - if (is_rep) LWECX_ZERO; - X86_IP++; - break; - - case 0x6d: /* (rep) insw / insd */ - /* NOTE: ES can't be overwritten */ - /* WARNING: no test for _DI wrapping! */ - if (prefix66) { - X86_DI += port_rep_inl(pInt, X86_DX, SEG_ADR((CARD32), X86_ES, DI), - X86_EFLAGS & DF, is_rep ? LWECX : 1); - } - else { - X86_DI += port_rep_inw(pInt, X86_DX, SEG_ADR((CARD32), X86_ES, DI), - X86_FLAGS & DF, is_rep ? LWECX : 1); - } - if (is_rep) LWECX_ZERO; - X86_IP++; - break; - - case 0x6e: /* (rep) outsb */ - if (pref_seg < 0) pref_seg = X86_DS; - /* WARNING: no test for _SI wrapping! */ - X86_SI += port_rep_outb(pInt, X86_DX, (CARD32)LIN_PREF_SI, - X86_FLAGS & DF, is_rep ? LWECX : 1); - if (is_rep) LWECX_ZERO; - X86_IP++; - break; - - case 0x6f: /* (rep) outsw / outsd */ - if (pref_seg < 0) pref_seg = X86_DS; - /* WARNING: no test for _SI wrapping! */ - if (prefix66) { - X86_SI += port_rep_outl(pInt, X86_DX, (CARD32)LIN_PREF_SI, - X86_EFLAGS & DF, is_rep ? LWECX : 1); - } - else { - X86_SI += port_rep_outw(pInt, X86_DX, (CARD32)LIN_PREF_SI, - X86_FLAGS & DF, is_rep ? LWECX : 1); - } - if (is_rep) LWECX_ZERO; - X86_IP++; - break; - - case 0xe5: /* inw xx, inl xx */ - if (prefix66) X86_EAX = x_inl(csp[1]); - else X86_AX = x_inw(csp[1]); - X86_IP += 2; - break; - - case 0xe4: /* inb xx */ - X86_AL = x_inb(csp[1]); - X86_IP += 2; - break; - - case 0xed: /* inw dx, inl dx */ - if (prefix66) X86_EAX = x_inl(X86_DX); - else X86_AX = x_inw(X86_DX); - X86_IP += 1; - break; - - case 0xec: /* inb dx */ - X86_AL = x_inb(X86_DX); - X86_IP += 1; - break; - - case 0xe7: /* outw xx */ - if (prefix66) x_outl(csp[1], X86_EAX); - else x_outw(csp[1], X86_AX); - X86_IP += 2; - break; - - case 0xe6: /* outb xx */ - x_outb(csp[1], X86_AL); - X86_IP += 2; - break; - - case 0xef: /* outw dx */ - if (prefix66) x_outl(X86_DX, X86_EAX); - else x_outw(X86_DX, X86_AX); - X86_IP += 1; - break; - - case 0xee: /* outb dx */ - x_outb(X86_DX, X86_AL); - X86_IP += 1; - break; - - case 0xf4: -#ifdef DEBUG - ErrorF("hlt at %p\n", lina); -#endif - return FALSE; - - case 0x0f: - xf86DrvMsg(pInt->scrnIndex, X_ERROR, - "CPU 0x0f Trap at CS:EIP=0x%4.4x:0x%8.8lx\n", X86_CS, X86_EIP); - goto op0ferr; - - default: - xf86DrvMsg(pInt->scrnIndex, X_ERROR, "unknown reason for exception\n"); - - op0ferr: - dump_registers(pInt); - stack_trace(pInt); - dump_code(pInt); - xf86DrvMsg(pInt->scrnIndex, X_ERROR, "cannot continue\n"); - return FALSE; - } /* end of switch() */ - return TRUE; -} - -static int -do_vm86(xf86Int10InfoPtr pInt) -{ - int retval, signo; - - xf86InterceptSignals(&signo); - retval = vm86_rep(VM86S); - xf86InterceptSignals(NULL); - - if (signo >= 0) { - xf86DrvMsg(pInt->scrnIndex, X_ERROR, - "vm86() syscall generated signal %d.\n", signo); - dump_registers(pInt); - dump_code(pInt); - stack_trace(pInt); - return 0; - } - - switch (VM86_TYPE(retval)) { - case VM86_UNKNOWN: - if (!vm86_GP_fault(pInt)) return 0; - break; - case VM86_STI: - xf86DrvMsg(pInt->scrnIndex, X_ERROR, "vm86_sti :-((\n"); - dump_registers(pInt); - dump_code(pInt); - stack_trace(pInt); - return 0; - case VM86_INTx: - pInt->num = VM86_ARG(retval); - if (!int_handler(pInt)) { - xf86DrvMsg(pInt->scrnIndex, X_ERROR, - "Unknown vm86_int: 0x%X\n\n", VM86_ARG(retval)); - dump_registers(pInt); - dump_code(pInt); - stack_trace(pInt); - return 0; - } - /* I'm not sure yet what to do if we can handle ints */ - break; - case VM86_SIGNAL: - return 1; - /* - * we used to warn here and bail out - but now the sigio stuff - * always fires signals at us. So we just ignore them for now. - */ - xf86DrvMsg(pInt->scrnIndex, X_WARNING, "received signal\n"); - return 0; - default: - xf86DrvMsg(pInt->scrnIndex, X_ERROR, "unknown type(0x%x)=0x%x\n", - VM86_ARG(retval), VM86_TYPE(retval)); - dump_registers(pInt); - dump_code(pInt); - stack_trace(pInt); - return 0; - } - - return 1; -} - -void -xf86ExecX86int10(xf86Int10InfoPtr pInt) -{ - int sig = setup_int(pInt); - - if (int_handler(pInt)) - while(do_vm86(pInt)) {}; - - finish_int(pInt, sig); -} - -static int -vm86_rep(struct vm86_struct *ptr) -{ - int __res; - -#ifdef __PIC__ - /* When compiling with -fPIC, we can't use asm constraint "b" because - %ebx is already taken by gcc. */ - __asm__ __volatile__("pushl %%ebx\n\t" - "push %%gs\n\t" - "movl %2,%%ebx\n\t" - "movl %1,%%eax\n\t" - "int $0x80\n\t" - "pop %%gs\n\t" - "popl %%ebx" - :"=a" (__res) - :"n" ((int)113), "r" ((struct vm86_struct *)ptr)); -#else - __asm__ __volatile__("push %%gs\n\t" - "int $0x80\n\t" - "pop %%gs" - :"=a" (__res):"a" ((int)113), - "b" ((struct vm86_struct *)ptr)); -#endif - - if (__res < 0) { - errno = -__res; - __res = -1; - } - else errno = 0; - return __res; -} - -#endif |