From 3562e78743202e43aec8727005182a2558117eca Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 28 Jun 2009 22:07:26 +0000 Subject: Checked in the following released items: xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz --- .../hw/xfree86/os-support/linux/int10/linux.c | 557 +++++++++++++++++++++ .../os-support/linux/int10/vm86/linux_vm86.c | 302 +++++++++++ 2 files changed, 859 insertions(+) create mode 100644 xorg-server/hw/xfree86/os-support/linux/int10/linux.c create mode 100644 xorg-server/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c (limited to 'xorg-server/hw/xfree86/os-support/linux/int10') diff --git a/xorg-server/hw/xfree86/os-support/linux/int10/linux.c b/xorg-server/hw/xfree86/os-support/linux/int10/linux.c new file mode 100644 index 000000000..9e2c6199c --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/linux/int10/linux.c @@ -0,0 +1,557 @@ +/* + * linux specific part of the int10 module + * Copyright 1999, 2000, 2001, 2002, 2003, 2004 Egbert Eich + */ +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include "xf86.h" +#include "xf86_OSproc.h" +#include "xf86Pci.h" +#include "compiler.h" +#define _INT10_PRIVATE +#include "xf86int10.h" +#ifdef __sparc__ +#define DEV_MEM "/dev/fb" +#else +#define DEV_MEM "/dev/mem" +#endif +#define ALLOC_ENTRIES(x) ((V_RAM / x) - 1) +#define SHMERRORPTR (pointer)(-1) + +#include +#include +#include +#include +#include +#include +#include + +static int counter = 0; +static unsigned long int10Generation = 0; + +static CARD8 read_b(xf86Int10InfoPtr pInt, int addr); +static CARD16 read_w(xf86Int10InfoPtr pInt, int addr); +static CARD32 read_l(xf86Int10InfoPtr pInt, int addr); +static void write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val); +static void write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val); +static void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val); + +int10MemRec linuxMem = { + read_b, + read_w, + read_l, + write_b, + write_w, + write_l +}; + +typedef struct { + int lowMem; + int highMem; + char* base; + char* base_high; + int screen; + char* alloc; +} linuxInt10Priv; + +#if defined DoSubModules + +typedef enum { + INT10_NOT_LOADED, + INT10_LOADED_VM86, + INT10_LOADED_X86EMU, + INT10_LOAD_FAILED +} Int10LinuxSubModuleState; + +static Int10LinuxSubModuleState loadedSubModule = INT10_NOT_LOADED; + +static Int10LinuxSubModuleState int10LinuxLoadSubModule(ScrnInfoPtr pScrn); + +#endif /* DoSubModules */ + +xf86Int10InfoPtr +xf86ExtendedInitInt10(int entityIndex, int Flags) +{ + xf86Int10InfoPtr pInt = NULL; + int screen; + int fd; + static void* vidMem = NULL; + static void* sysMem = NULL; + void* vMem = NULL; + void *options = NULL; + int low_mem; + int high_mem = -1; + char *base = SHMERRORPTR; + char *base_high = SHMERRORPTR; + int pagesize; + memType cs; + legacyVGARec vga; + Bool videoBiosMapped = FALSE; + + if (int10Generation != serverGeneration) { + counter = 0; + int10Generation = serverGeneration; + } + + screen = (xf86FindScreenForEntity(entityIndex))->scrnIndex; + + options = xf86HandleInt10Options(xf86Screens[screen],entityIndex); + + if (int10skip(options)) { + xfree(options); + return NULL; + } + +#if defined DoSubModules + if (loadedSubModule == INT10_NOT_LOADED) + loadedSubModule = int10LinuxLoadSubModule(xf86Screens[screen]); + + if (loadedSubModule == INT10_LOAD_FAILED) + return NULL; +#endif + + if ((!vidMem) || (!sysMem)) { + if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) { + if (!sysMem) { +#ifdef DEBUG + ErrorF("Mapping sys bios area\n"); +#endif + if ((sysMem = mmap((void *)(SYS_BIOS), BIOS_SIZE, + PROT_READ | PROT_EXEC, + MAP_SHARED | MAP_FIXED, fd, SYS_BIOS)) + == MAP_FAILED) { + xf86DrvMsg(screen, X_ERROR, "Cannot map SYS BIOS\n"); + close(fd); + goto error0; + } + } + if (!vidMem) { +#ifdef DEBUG + ErrorF("Mapping VRAM area\n"); +#endif + if ((vidMem = mmap((void *)(V_RAM), VRAM_SIZE, + PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_SHARED | MAP_FIXED, fd, V_RAM)) + == MAP_FAILED) { + xf86DrvMsg(screen, X_ERROR, "Cannot map V_RAM\n"); + close(fd); + goto error0; + } + } + close(fd); + } else { + xf86DrvMsg(screen, X_ERROR, "Cannot open %s\n", DEV_MEM); + goto error0; + } + } + + pInt = (xf86Int10InfoPtr)xnfcalloc(1, sizeof(xf86Int10InfoRec)); + pInt->scrnIndex = screen; + pInt->entityIndex = entityIndex; + pInt->dev = xf86GetPciInfoForEntity(entityIndex); + + if (!xf86Int10ExecSetup(pInt)) + goto error0; + pInt->mem = &linuxMem; + pagesize = getpagesize(); + pInt->private = (pointer)xnfcalloc(1, sizeof(linuxInt10Priv)); + ((linuxInt10Priv*)pInt->private)->screen = screen; + ((linuxInt10Priv*)pInt->private)->alloc = + (pointer)xnfcalloc(1, ALLOC_ENTRIES(pagesize)); + + if (!xf86IsEntityPrimary(entityIndex)) { +#ifdef DEBUG + ErrorF("Mapping high memory area\n"); +#endif + if ((high_mem = shmget(counter++, HIGH_MEM_SIZE, + IPC_CREAT | SHM_R | SHM_W)) == -1) { + if (errno == ENOSYS) + xf86DrvMsg(screen, X_ERROR, "shmget error\n Please reconfigure" + " your kernel to include System V IPC support\n"); + else + xf86DrvMsg(screen, X_ERROR, + "shmget(highmem) error: %s\n",strerror(errno)); + goto error1; + } + } else { +#ifdef DEBUG + ErrorF("Mapping Video BIOS\n"); +#endif + videoBiosMapped = TRUE; + if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) { + if ((vMem = mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS, + PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_SHARED | MAP_FIXED, fd, V_BIOS)) + == MAP_FAILED) { + xf86DrvMsg(screen, X_ERROR, "Cannot map V_BIOS\n"); + close(fd); + goto error1; + } + close (fd); + } else + goto error1; + } + ((linuxInt10Priv*)pInt->private)->highMem = high_mem; + +#ifdef DEBUG + ErrorF("Mapping 640kB area\n"); +#endif + if ((low_mem = shmget(counter++, V_RAM, + IPC_CREAT | SHM_R | SHM_W)) == -1) { + xf86DrvMsg(screen, X_ERROR, + "shmget(lowmem) error: %s\n",strerror(errno)); + goto error2; + } + + ((linuxInt10Priv*)pInt->private)->lowMem = low_mem; + base = shmat(low_mem, 0, 0); + if (base == SHMERRORPTR) { + xf86DrvMsg(screen, X_ERROR, + "shmat(low_mem) error: %s\n",strerror(errno)); + goto error3; + } + ((linuxInt10Priv *)pInt->private)->base = base; + if (high_mem > -1) { + base_high = shmat(high_mem, 0, 0); + if (base_high == SHMERRORPTR) { + xf86DrvMsg(screen, X_ERROR, + "shmat(high_mem) error: %s\n",strerror(errno)); + goto error3; + } + ((linuxInt10Priv*)pInt->private)->base_high = base_high; + } else + ((linuxInt10Priv*)pInt->private)->base_high = NULL; + + if (!MapCurrentInt10(pInt)) + goto error3; + + Int10Current = pInt; + +#ifdef DEBUG + ErrorF("Mapping int area\n"); +#endif + if (xf86ReadBIOS(0, 0, (unsigned char *)0, LOW_PAGE_SIZE) < 0) { + xf86DrvMsg(screen, X_ERROR, "Cannot read int vect\n"); + goto error3; + } +#ifdef DEBUG + ErrorF("done\n"); +#endif + /* + * Read in everything between V_BIOS and SYS_BIOS as some system BIOSes + * have executable code there. Note that xf86ReadBIOS() can only bring in + * 64K bytes at a time. + */ + if (!videoBiosMapped) { + (void)memset((pointer)V_BIOS, 0, SYS_BIOS - V_BIOS); +#ifdef DEBUG + ErrorF("Reading BIOS\n"); +#endif + for (cs = V_BIOS; cs < SYS_BIOS; cs += V_BIOS_SIZE) + if (xf86ReadBIOS(cs, 0, (pointer)cs, V_BIOS_SIZE) < V_BIOS_SIZE) + xf86DrvMsg(screen, X_WARNING, + "Unable to retrieve all of segment 0x%06lX.\n", cs); +#ifdef DEBUG + ErrorF("done\n"); +#endif + } + + if (xf86IsEntityPrimary(entityIndex) && !(initPrimary(options))) { + if (!xf86int10GetBiosSegment(pInt, NULL)) + goto error3; + + set_return_trap(pInt); +#ifdef _PC + pInt->Flags = Flags & (SET_BIOS_SCRATCH | RESTORE_BIOS_SCRATCH); + if (! (pInt->Flags & SET_BIOS_SCRATCH)) + pInt->Flags &= ~RESTORE_BIOS_SCRATCH; + xf86Int10SaveRestoreBIOSVars(pInt, TRUE); +#endif + } else { + const BusType location_type = xf86int10GetBiosLocationType(pInt); + + switch (location_type) { + case BUS_PCI: { + int err; + struct pci_device *rom_device = + xf86GetPciInfoForEntity(pInt->entityIndex); + +#if HAVE_PCI_DEVICE_ENABLE + pci_device_enable(rom_device); +#endif + + err = pci_device_read_rom(rom_device, (unsigned char *)(V_BIOS)); + if (err) { + xf86DrvMsg(screen,X_ERROR,"Cannot read V_BIOS (%s)\n", + strerror(err)); + goto error3; + } + + pInt->BIOSseg = V_BIOS >> 4; + break; + } + case BUS_ISA: + if (!xf86int10GetBiosSegment(pInt, NULL)) + goto error3; + break; + default: + goto error3; + } + + pInt->num = 0xe6; + reset_int_vect(pInt); + set_return_trap(pInt); + LockLegacyVGA(pInt, &vga); + xf86ExecX86int10(pInt); + UnlockLegacyVGA(pInt, &vga); + } +#ifdef DEBUG + dprint(0xc0000, 0x20); +#endif + + xfree(options); + return pInt; + +error3: + if (base_high) + shmdt(base_high); + shmdt(base); + shmdt(0); + if (base_high) + shmdt((char*)HIGH_MEM); + shmctl(low_mem, IPC_RMID, NULL); + Int10Current = NULL; +error2: + if (high_mem > -1) + shmctl(high_mem, IPC_RMID,NULL); +error1: + if (vMem) + munmap(vMem, SYS_BIOS - V_BIOS); + xfree(((linuxInt10Priv*)pInt->private)->alloc); + xfree(pInt->private); +error0: + xfree(options); + xfree(pInt); + return NULL; +} + +Bool +MapCurrentInt10(xf86Int10InfoPtr pInt) +{ + pointer addr; + int fd = -1; + + if (Int10Current) { + shmdt(0); + if (((linuxInt10Priv*)Int10Current->private)->highMem >= 0) + shmdt((char*)HIGH_MEM); + else + munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS)); + } + addr = shmat(((linuxInt10Priv*)pInt->private)->lowMem, (char*)1, SHM_RND); + if (addr == SHMERRORPTR) { + xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot shmat() low memory\n"); + xf86DrvMsg(pInt->scrnIndex, X_ERROR, + "shmat(low_mem) error: %s\n",strerror(errno)); + return FALSE; + } + + if (((linuxInt10Priv*)pInt->private)->highMem >= 0) { + addr = shmat(((linuxInt10Priv*)pInt->private)->highMem, + (char*)HIGH_MEM, 0); + if (addr == SHMERRORPTR) { + xf86DrvMsg(pInt->scrnIndex, X_ERROR, + "Cannot shmat() high memory\n"); + xf86DrvMsg(pInt->scrnIndex, X_ERROR, + "shmget error: %s\n",strerror(errno)); + return FALSE; + } + } else { + if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) { + if (mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS, + PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_SHARED | MAP_FIXED, fd, V_BIOS) + == MAP_FAILED) { + xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot map V_BIOS\n"); + close (fd); + return FALSE; + } + } else { + xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot open %s\n",DEV_MEM); + return FALSE; + } + close (fd); + } + + return TRUE; +} + +void +xf86FreeInt10(xf86Int10InfoPtr pInt) +{ + if (!pInt) + return; + +#ifdef _PC + xf86Int10SaveRestoreBIOSVars(pInt, FALSE); +#endif + if (Int10Current == pInt) { + shmdt(0); + if (((linuxInt10Priv*)pInt->private)->highMem >= 0) + shmdt((char*)HIGH_MEM); + else + munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS)); + Int10Current = NULL; + } + + if (((linuxInt10Priv*)pInt->private)->base_high) + shmdt(((linuxInt10Priv*)pInt->private)->base_high); + shmdt(((linuxInt10Priv*)pInt->private)->base); + shmctl(((linuxInt10Priv*)pInt->private)->lowMem, IPC_RMID, NULL); + if (((linuxInt10Priv*)pInt->private)->highMem >= 0) + shmctl(((linuxInt10Priv*)pInt->private)->highMem, IPC_RMID, NULL); + xfree(((linuxInt10Priv*)pInt->private)->alloc); + xfree(pInt->private); + xfree(pInt); +} + +void * +xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num, int *off) +{ + int pagesize = getpagesize(); + int num_pages = ALLOC_ENTRIES(pagesize); + int i, j; + + for (i = 0; i < (num_pages - num); i++) { + if (((linuxInt10Priv*)pInt->private)->alloc[i] == 0) { + for (j = i; j < (num + i); j++) + if ((((linuxInt10Priv*)pInt->private)->alloc[j] != 0)) + break; + if (j == (num + i)) + break; + else + i = i + num; + } + } + if (i == (num_pages - num)) + return NULL; + + for (j = i; j < (i + num); j++) + ((linuxInt10Priv*)pInt->private)->alloc[j] = 1; + + *off = (i + 1) * pagesize; + + return ((linuxInt10Priv*)pInt->private)->base + ((i + 1) * pagesize); +} + +void +xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase, int num) +{ + int pagesize = getpagesize(); + int first = (((unsigned long)pbase + - (unsigned long)((linuxInt10Priv*)pInt->private)->base) + / pagesize) - 1; + int i; + + for (i = first; i < (first + num); i++) + ((linuxInt10Priv*)pInt->private)->alloc[i] = 0; +} + +static CARD8 +read_b(xf86Int10InfoPtr pInt, int addr) +{ + return *((CARD8 *)(memType)addr); +} + +static CARD16 +read_w(xf86Int10InfoPtr pInt, int addr) +{ + return *((CARD16 *)(memType)addr); +} + +static CARD32 +read_l(xf86Int10InfoPtr pInt, int addr) +{ + return *((CARD32 *)(memType)addr); +} + +static void +write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val) +{ + *((CARD8 *)(memType)addr) = val; +} + +static void +write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val) +{ + *((CARD16 *)(memType)addr) = val; +} + +static +void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val) +{ + *((CARD32 *)(memType) addr) = val; +} + +pointer +xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr) +{ + if (addr < V_RAM) + return ((linuxInt10Priv*)pInt->private)->base + addr; + else if (addr < V_BIOS) + return (pointer)(memType)addr; + else if (addr < SYS_BIOS) { + if (((linuxInt10Priv*)pInt->private)->base_high) + return (pointer)(((linuxInt10Priv*)pInt->private)->base_high + - V_BIOS + addr); + else + return (pointer) (memType)addr; + } else + return (pointer) (memType)addr; +} + +#if defined DoSubModules + +static Bool +vm86_tst(void) +{ + 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" + "movl %2,%%ebx\n\t" + "movl %1,%%eax\n\t" + "int $0x80\n\t" + "popl %%ebx" + :"=a" (__res) + :"n" ((int)113), "r" (NULL)); +#else + __asm__ __volatile__("int $0x80\n\t" + :"=a" (__res):"a" ((int)113), + "b" ((struct vm86_struct *)NULL)); +#endif + + if (__res < 0 && __res == -ENOSYS) + return FALSE; + + return TRUE; +} + +static Int10LinuxSubModuleState +int10LinuxLoadSubModule(ScrnInfoPtr pScrn) +{ + if (vm86_tst()) { + if (xf86LoadSubModule(pScrn,"vm86")) + return INT10_LOADED_VM86; + } + if (xf86LoadSubModule(pScrn,"x86emu")) + return INT10_LOADED_X86EMU; + + return INT10_LOAD_FAILED; +} + +#endif /* DoSubModules */ diff --git a/xorg-server/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c b/xorg-server/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c new file mode 100644 index 000000000..9412b07a4 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/linux/int10/vm86/linux_vm86.c @@ -0,0 +1,302 @@ +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include +#include + +#include "xf86.h" +#include "xf86_OSproc.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 -- cgit v1.2.3