diff options
Diffstat (limited to 'tools/libxc/xc_plan9_build.c')
| -rw-r--r-- | tools/libxc/xc_plan9_build.c | 694 |
1 files changed, 0 insertions, 694 deletions
diff --git a/tools/libxc/xc_plan9_build.c b/tools/libxc/xc_plan9_build.c deleted file mode 100644 index 7f697d2115..0000000000 --- a/tools/libxc/xc_plan9_build.c +++ /dev/null @@ -1,694 +0,0 @@ -/****************************************************************************** - * xc_plan9_build.c - * derived from xc_linux_build.c - */ - -#include "xc_private.h" - -#include <zlib.h> - -#define DEBUG 1 -#ifdef DEBUG -#define DPRINTF(x) printf x; fflush(stdout); -#else -#define DPRINTF(x) -#endif - -#include "plan9a.out.h" - -/* really TOS which means stack starts at 0x2000, and uses page 1*/ -#define STACKPAGE 2 -struct Exec header, origheader; - -typedef struct page { - char data[PAGE_SIZE]; -} PAGE; - - -int -memcpy_toguest(int xc_handle, u32 dom, void *v, int size, - unsigned long *page_array, unsigned int to_page) -{ - int ret; - unsigned char *cp = v; - unsigned int whichpage; - unsigned char *vaddr; - -// DPRINTF(("memcpy_to_guest: to_page 0x%x, count %d\n", to_page, size)); - for (ret = 0, whichpage = to_page; size > 0; - whichpage++, size -= PAGE_SIZE, cp += PAGE_SIZE) { - - // DPRINTF (("map_pfn_writeable(%p, 0x%lx)\n", pm_handle, -// page_array[whichpage])); - vaddr = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE, - PROT_READ | PROT_WRITE, - page_array[whichpage]); - // DPRINTF (("vaddr is %p\n", vaddr)); - if (vaddr == NULL) { - ret = -1; - ERROR("Couldn't map guest memory"); - goto out; - } - // DPRINTF (("copy %p to %p, count 0x%x\n", cp, vaddr, 4096)); - memcpy(vaddr, cp, 4096); - munmap(vaddr, PAGE_SIZE); - // DPRINTF (("Did %ud'th pages\n", whichpage)); - } - out: - return ret; -} - -int -blah(char *b) -{ - fprintf(stderr, "Error in xc_plan9_build!\n"); - perror(b); - return errno; -} - -/* swap bytes. For plan 9 headers */ -void -swabby(unsigned long *s, char *name) -{ - unsigned long it; - it = ((*s & 0xff000000) >> 24) | ((*s & 0xff0000) >> 8) | - ((*s & 0xff00) << 8) | ((*s & 0xff) << 24); - DPRINTF(("Item %s is 0x%lx\n", name, it)); - *s = it; -} - -void -plan9header(Exec * header) -{ - /* header is big-endian */ - swabby((unsigned long *)&header->magic, "magic"); - swabby((unsigned long *)&header->text, "text"); - swabby((unsigned long *)&header->data, "data"); - swabby((unsigned long *)&header->bss, "bss"); - swabby((unsigned long *)&header->syms, "syms"); - swabby((unsigned long *)&header->entry, "entry"); - swabby((unsigned long *)&header->spsz, "spsz"); - swabby((unsigned long *)&header->pcsz, "pcsz"); - -} - -static int - loadp9image(gzFile kernel_gfd, int xc_handle, u32 dom, - unsigned long *page_array, - unsigned long tot_pages, unsigned long *virt_load_addr, - unsigned long *ksize, unsigned long *symtab_addr, - unsigned long *symtab_len, - unsigned long *first_data_page, unsigned long *pdb_page, - const char *cmdline); - -#define P9ROUND (P9SIZE / 8) - -#define L1_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED) -#define L2_PROT (_PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY|_PAGE_USER) - -static int -setup_guest(int xc_handle, - u32 dom, - gzFile kernel_gfd, - unsigned long tot_pages, - unsigned long *virt_startinfo_addr, - unsigned long *virt_load_addr, - vcpu_guest_context_t * ctxt, - const char *cmdline, - unsigned long shared_info_frame, - unsigned int control_evtchn, - int flags) -{ - l1_pgentry_t *vl1e = NULL; - l2_pgentry_t *vl2tab = NULL, *vl2e = NULL; - unsigned long *cpage_array = NULL; - unsigned long *pte_array = NULL; - unsigned long l2tab; - unsigned long l1tab; - unsigned long count; - unsigned long symtab_addr = 0, symtab_len = 0; - start_info_t *start_info; - shared_info_t *shared_info; - unsigned long ksize; - mmu_t *mmu = NULL; - int i; - unsigned long first_page_after_kernel = 0, - first_data_page = 0, - page_array_page; - unsigned long cpu0pdb, cpu0pte, cpu0ptelast; - unsigned long /*last_pfn, */ tot_pte_pages; - - DPRINTF(("tot pages is %ld\n", tot_pages)); - if ((cpage_array = malloc(tot_pages * sizeof (unsigned long))) == NULL) { - PERROR("Could not allocate cpage array"); - goto error_out; - } - - if (xc_get_pfn_list(xc_handle, dom, cpage_array, tot_pages) != tot_pages) { - PERROR("Could not get the page frame list"); - goto error_out; - } - - for (i = 0; i < 64; i++) - DPRINTF(("First %d page is 0x%lx\n", i, cpage_array[i])); - - tot_pte_pages = tot_pages >> 10; - DPRINTF(("Page range is 0 to 0x%lx, which requires 0x%lx pte pages\n", - tot_pte_pages, tot_pte_pages)); - - if (loadp9image(kernel_gfd, xc_handle, dom, cpage_array, tot_pages, - virt_load_addr, &ksize, &symtab_addr, &symtab_len, - &first_data_page, &first_page_after_kernel, cmdline)) - goto error_out; - DPRINTF(("First data page is 0x%lx\n", first_data_page)); - DPRINTF(("First page after kernel is 0x%lx\n", - first_page_after_kernel)); - - /* - NEED TO INCREMENT first page after kernel by: - + 1 (pdb) - + tot_pte_pages (pte) - + tot_pte_pages (page_array) - */ - /* SO, have to copy the first kernel pages pfns right into the - * page_array, then do identity maps for the rest. - */ - DPRINTF(("mapped kernel pages\n")); - - /* now loop over all ptes and store into the page_array, so as - * to get the identity map. - */ - if ((pte_array = - malloc(tot_pte_pages * 1024 * sizeof (unsigned long))) == NULL) { - PERROR("Could not allocate pte array"); - goto error_out; - } - - /* plan 9 on startup expects a "l2" (xen parlance) at 0x2000, - * this "l2" should have one PTE pointer for a va of 0x80000000. - * and an l1 (PTEs to you) at 0x3000. (physical). - * the PTEs should map the first 4M of memory. - */ - /* get a physical address for the L2. This means take the PFN and - * shift left. - */ - /* this terminology is plan 9 terminology. - * pdb is essentially the Xen L2. 'Page Directory Block'? - * I need to ask JMK. - * cpupte is the pte array. - * Plan 9 counts on these being set up for cpu0. - * SO: cpu0pdb (Xen L2) - * and cpupte (Xen L1) - */ - /* cpu0pdb is right after kernel */ - cpu0pdb = first_page_after_kernel; - /* cpu0pte comes right after cpu0pdb */ - cpu0pte = cpu0pdb + 1; - /* number of the past cpu0pte page */ - cpu0ptelast = cpu0pte + tot_pte_pages - 1; - /* first page of the page array (mfn) */ - page_array_page = cpu0ptelast + 1; - - DPRINTF(("cpu0pdb 0x%lx, cpu0pte 0x%lx cpu0ptelast 0x%lx\n", cpu0pdb, - cpu0pte, cpu0ptelast)); - l2tab = cpage_array[cpu0pdb] << PAGE_SHIFT; - DPRINTF(("l2tab 0x%lx\n", l2tab)); - ctxt->pt_base = l2tab; - - /* get a physical address for the L1. This means take the PFN and - * shift left. - */ - l1tab = cpage_array[cpu0pte] << PAGE_SHIFT; - DPRINTF(("l1tab 0x%lx\n", l1tab)); - if ((mmu = init_mmu_updates(xc_handle, dom)) == NULL) - goto error_out; - DPRINTF(("now map in l2tab\n")); - - /* Initialise the page tables. */ - /* mmap in the l2tab */ - if ((vl2tab = xc_map_foreign_range(xc_handle, dom, - PAGE_SIZE, PROT_READ | PROT_WRITE, - l2tab >> PAGE_SHIFT)) == NULL) - goto error_out; - DPRINTF(("vl2tab 0x%p\n", vl2tab)); - /* now we have the cpu0pdb for the kernel, starting at 0x2000, - * so we can plug in the physical pointer to the 0x3000 pte - */ - /* zero it */ - memset(vl2tab, 0, PAGE_SIZE); - /* get a pointer in the l2tab for the virt_load_addr */ - DPRINTF(("&vl2tab[l2_table_offset(*virt_load_addr)] is 0x%p[0x%lx]\n", - &vl2tab[l2_table_offset(*virt_load_addr)], - l2_table_offset(*virt_load_addr))); - - vl2e = &vl2tab[l2_table_offset(*virt_load_addr)]; - - /* OK, for all the available PTE, set the PTE pointer up */ - DPRINTF(("For i = %ld to %ld ...\n", cpu0pte, cpu0ptelast)); - for (i = cpu0pte; i <= cpu0ptelast; i++) { - DPRINTF(("Index %d Set %p to 0x%lx\n", i, vl2e, - (cpage_array[i] << PAGE_SHIFT) | L2_PROT)); - *vl2e++ = (cpage_array[i] << PAGE_SHIFT) | L2_PROT; - } - - /* unmap it ... */ - munmap(vl2tab, PAGE_SIZE); - - /* for the pages from virt_load_pointer to the end of this - * set of PTEs, map in the PFN for that VA - */ - for (vl1e = (l1_pgentry_t *) pte_array, count = 0; - count < tot_pte_pages * 1024; count++, vl1e++) { - - *vl1e = cpage_array[count]; - if (!cpage_array[count]) - continue; - /* set in the PFN for this entry */ - *vl1e = (cpage_array[count] << PAGE_SHIFT) | L1_PROT; -/* - DPRINTF (("vl1e # %d 0x%lx gets 0x%lx\n", - count, vl1e, *vl1e)); -*/ - if ((count >= cpu0pdb) && (count <= cpu0ptelast)) { - //DPRINTF((" Fix up page %d as it is in pte ville: ", count)); - *vl1e &= ~_PAGE_RW; - DPRINTF(("0x%lx\n", *vl1e)); - } - if ((count >= (0x100000 >> 12)) - && (count < (first_data_page >> 12))) { - //DPRINTF((" Fix up page %d as it is in text ", count)); - *vl1e &= ~_PAGE_RW; - //DPRINTF (("0x%lx\n", *vl1e)); - } - } - /* special thing. Pre-map the shared info page */ - vl1e = &pte_array[2]; - *vl1e = (shared_info_frame << PAGE_SHIFT) | L1_PROT; - DPRINTF(("v1l1 %p, has value 0x%lx\n", vl1e, *(unsigned long *) vl1e)); - /* another special thing. VA 80005000 has to point to 80006000 */ - /* this is a Plan 9 thing -- the 'mach' pointer */ - /* 80005000 is the mach pointer per-cpu, and the actual - * mach pointers are 80006000, 80007000 etc. - */ - vl1e = &pte_array[5]; - *vl1e = (cpage_array[6] << PAGE_SHIFT) | L1_PROT; - - /* OK, it's all set up, copy it in */ - memcpy_toguest(xc_handle, dom, pte_array, - (tot_pte_pages * 1024 * sizeof (unsigned long) /**/), - cpage_array, cpu0pte); - - /* We really need to have the vl1tab unmapped or the add_mmu_update - * below will fail bigtime. - */ - /* Xen guys: remember my errors on domain exit? Something I'm doing - * wrong in here? We never did find out ... - */ - /* get rid of the entries we can not use ... */ - memcpy_toguest(xc_handle, dom, cpage_array, - (tot_pte_pages * 1024 * sizeof (unsigned long) /**/), - cpage_array, page_array_page); - /* last chance to dump all of memory */ - // dumpit(xc_handle, dom, 0 /*0x100000>>12*/, tot_pages, cpage_array) ; - /* - * Pin down l2tab addr as page dir page - causes hypervisor to provide - * correct protection for the page - */ - if (pin_table(xc_handle, MMUEXT_PIN_L2_TABLE, l2tab>>PAGE_SHIFT, dom)) - goto error_out; - - for (count = 0; count < tot_pages; count++) { -/* - DPRINTF (("add_mmu_update(0x%x, 0x%x, 0x%x, %d)\n", xc_handle, mmu, - (cpage_array[count] - << PAGE_SHIFT) | - MMU_MACHPHYS_UPDATE, - count)); -*/ - if (add_mmu_update(xc_handle, mmu, - (cpage_array[count] << PAGE_SHIFT) | - MMU_MACHPHYS_UPDATE, count)) - goto error_out; - //DPRINTF(("Do the next one\n")); - } -/* - */ - - //dumpit(pm_handle, 3, 4, page_array); - /* put the virt_startinfo_addr at KZERO */ - /* just hard-code for now */ - *virt_startinfo_addr = 0x80000000; - - DPRINTF(("virt_startinfo_addr = 0x%lx\n", *virt_startinfo_addr)); - start_info = xc_map_foreign_range(xc_handle, dom, - PAGE_SIZE, PROT_READ | PROT_WRITE, - cpage_array[0]); - DPRINTF(("startinfo = 0x%p\n", start_info)); - DPRINTF(("shared_info_frame is %lx\n", shared_info_frame)); - memset(start_info, 0, sizeof (*start_info)); - start_info->pt_base = 0x80000000 | cpu0pdb << PAGE_SHIFT; - start_info->mfn_list = 0x80000000 | (page_array_page) << PAGE_SHIFT; - DPRINTF(("mfn_list 0x%lx\n", start_info->mfn_list)); - start_info->mod_start = 0; - start_info->mod_len = 0; - start_info->nr_pages = tot_pte_pages * 1024; - start_info->nr_pt_frames = tot_pte_pages + 1; - start_info->shared_info = shared_info_frame; - start_info->flags = 0; - DPRINTF((" control event channel is %d\n", control_evtchn)); - start_info->domain_controller_evtchn = control_evtchn; - strncpy((char *)start_info->cmd_line, cmdline, MAX_GUEST_CMDLINE); - start_info->cmd_line[MAX_GUEST_CMDLINE - 1] = '\0'; - munmap(start_info, PAGE_SIZE); - - DPRINTF(("done setting up start_info\n")); - DPRINTF(("shared_info_frame = 0x%lx\n", shared_info_frame)); - /* shared_info page starts its life empty. */ - - shared_info = xc_map_foreign_range(xc_handle, dom, - PAGE_SIZE, PROT_READ | PROT_WRITE, - shared_info_frame); - memset(shared_info, 0, PAGE_SIZE); - /* Mask all upcalls... */ - DPRINTF(("mask all upcalls\n")); - for (i = 0; i < MAX_VIRT_CPUS; i++) - shared_info->vcpu_data[i].evtchn_upcall_mask = 1; - munmap(shared_info, PAGE_SIZE); - - /* Send the page update requests down to the hypervisor. */ - DPRINTF(("send page update reqs down.\n")); - if (finish_mmu_updates(xc_handle, mmu)) - goto error_out; - - //DPRINTF (("call dumpit.\n")); - //dumpit(pm_handle, 0x100000>>12, tot_pages, page_array) ; - //dumpit (pm_handle, 2, 0x100, page_array); - free(mmu); - - /* we don't bother freeing anything at this point -- - * we're exiting and it is pointless - */ - return 0; - - error_out: - /* oh well we still free some things -- I oughtta nuke this */ - if (mmu != NULL) - free(mmu); - ; - return -1; -} - -int -xc_plan9_build(int xc_handle, - u32 domid, - const char *image_name, - const char *cmdline, - unsigned int control_evtchn, unsigned long flags) -{ - dom0_op_t launch_op, op; - unsigned long load_addr = 0; - long tot_pages; - int kernel_fd = -1; - gzFile kernel_gfd = NULL; - int rc, i; - vcpu_guest_context_t st_ctxt, *ctxt = &st_ctxt; - unsigned long virt_startinfo_addr; - - if ((tot_pages = xc_get_tot_pages(xc_handle, domid)) < 0) { - PERROR("Could not find total pages for domain"); - return 1; - } - DPRINTF(("xc_get_tot_pages returns %ld pages\n", tot_pages)); - - kernel_fd = open(image_name, O_RDONLY); - if (kernel_fd < 0) { - PERROR("Could not open kernel image"); - return 1; - } - - if ((kernel_gfd = gzdopen(kernel_fd, "rb")) == NULL) { - PERROR("Could not allocate decompression state for state file"); - close(kernel_fd); - return 1; - } - - DPRINTF(("xc_get_tot_pages returns %ld pages\n", tot_pages)); - if (mlock(&st_ctxt, sizeof (st_ctxt))) { - PERROR("xc_plan9_build: ctxt mlock failed"); - return 1; - } - - op.cmd = DOM0_GETDOMAININFO; - op.u.getdomaininfo.domain = (domid_t) domid; - if ((do_dom0_op(xc_handle, &op) < 0) || - ((u32) op.u.getdomaininfo.domain != domid)) { - PERROR("Could not get info on domain"); - goto error_out; - } - DPRINTF(("xc_get_tot_pages returns %ld pages\n", tot_pages)); - - if ( xc_domain_get_vcpu_context(xc_handle, domid, 0, ctxt) ) - { - PERROR("Could not get vcpu context"); - goto error_out; - } - - if (!(op.u.getdomaininfo.flags & DOMFLAGS_PAUSED) - || (ctxt->pt_base != 0)) { - ERROR("Domain is already constructed"); - goto error_out; - } - - DPRINTF(("xc_get_tot_pages returns %ld pages\n", tot_pages)); - if (setup_guest(xc_handle, domid, kernel_gfd, tot_pages, - &virt_startinfo_addr, - &load_addr, &st_ctxt, cmdline, - op.u.getdomaininfo.shared_info_frame, - control_evtchn, flags) < 0) { - ERROR("Error constructing guest OS"); - goto error_out; - } - - /* leave the leak in here for now - if ( kernel_fd >= 0 ) - close(kernel_fd); - if( kernel_gfd ) - gzclose(kernel_gfd); - */ - ctxt->flags = 0; - - /* - * Initial register values: - * DS,ES,FS,GS = FLAT_KERNEL_DS - * CS:EIP = FLAT_KERNEL_CS:start_pc - * SS:ESP = FLAT_KERNEL_DS:start_stack - * ESI = start_info - * [EAX,EBX,ECX,EDX,EDI,EBP are zero] - * EFLAGS = IF | 2 (bit 1 is reserved and should always be 1) - */ - ctxt->user_regs.ds = FLAT_KERNEL_DS; - ctxt->user_regs.es = FLAT_KERNEL_DS; - ctxt->user_regs.fs = FLAT_KERNEL_DS; - ctxt->user_regs.gs = FLAT_KERNEL_DS; - ctxt->user_regs.ss = FLAT_KERNEL_DS; - ctxt->user_regs.cs = FLAT_KERNEL_CS; - ctxt->user_regs.eip = load_addr; - ctxt->user_regs.eip = 0x80100020; - /* put stack at top of second page */ - ctxt->user_regs.esp = 0x80000000 + (STACKPAGE << PAGE_SHIFT); - - /* why is this set? */ - ctxt->user_regs.esi = ctxt->user_regs.esp; - ctxt->user_regs.eflags = 1 << 9; /* Interrupt Enable */ - - /* FPU is set up to default initial state. */ - memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt)); - - /* Virtual IDT is empty at start-of-day. */ - for (i = 0; i < 256; i++) { - ctxt->trap_ctxt[i].vector = i; - ctxt->trap_ctxt[i].cs = FLAT_KERNEL_CS; - } - - /* No LDT. */ - ctxt->ldt_ents = 0; - - /* Use the default Xen-provided GDT. */ - ctxt->gdt_ents = 0; - - /* Ring 1 stack is the initial stack. */ - /* put stack at top of second page */ - ctxt->kernel_ss = FLAT_KERNEL_DS; - ctxt->kernel_sp = ctxt->user_regs.esp; - - /* No debugging. */ - memset(ctxt->debugreg, 0, sizeof (ctxt->debugreg)); - - /* No callback handlers. */ -#if defined(__i386__) - ctxt->event_callback_cs = FLAT_KERNEL_CS; - ctxt->event_callback_eip = 0; - ctxt->failsafe_callback_cs = FLAT_KERNEL_CS; - ctxt->failsafe_callback_eip = 0; -#elif defined(__x86_64__) - ctxt->event_callback_eip = 0; - ctxt->failsafe_callback_eip = 0; - ctxt->syscall_callback_eip = 0; -#endif - - memset(&launch_op, 0, sizeof (launch_op)); - - launch_op.u.setdomaininfo.domain = (domid_t) domid; - launch_op.u.setdomaininfo.vcpu = 0; - // launch_op.u.setdomaininfo.num_vifs = 1; - launch_op.u.setdomaininfo.ctxt = ctxt; - launch_op.cmd = DOM0_SETDOMAININFO; - rc = do_dom0_op(xc_handle, &launch_op); - - fprintf(stderr, "RC is %d\n", rc); - return rc; - - error_out: - if (kernel_fd >= 0) - close(kernel_fd); - if (kernel_gfd) - gzclose(kernel_gfd); - - return -1; -} - -/* - * Plan 9 memory layout (initial) - * ---------------- - * | info from xen| @0 - * ---------------|<--- boot args (start at 0x1200 + 64) - * | stack | - * ----------------<--- page 2 - * | empty | - * ---------------<---- page 5 MACHADDR (always points to machp[cpuno] - * | aliased | - * ---------------<----- page 6 CPU0MACH - * | CPU0MACH | - * ---------------- - * | empty | - * ---------------- *virt_load_addr = ehdr.e_entry (0x80100000) - * | kernel | - * | | - * ---------------- <----- page aligned boundary. - * | data | - * | | - * ---------------- - * | bss | - * ----------------<--- end of kernel (page aligned) - * | PMD cpu0pdb | - * ----------------<--- page +1 - * | PTE cpu0pte | - * ----------------<--- page (tot_pte_pages)/1024 - * | page_array | - * ---------------- <--- page (tot_pte_pages)/1024 - * | empty to TOM | - * ---------------- - */ - -static int -loadp9image(gzFile kernel_gfd, int xc_handle, u32 dom, - unsigned long *page_array, - unsigned long tot_pages, unsigned long *virt_load_addr, - unsigned long *ksize, unsigned long *symtab_addr, - unsigned long *symtab_len, - unsigned long *first_data_page, unsigned long *pdb_page, - const char *cmdline) -{ - unsigned long datapage; - Exec ehdr; - - char *p; - unsigned long maxva; - int curpos, ret; - PAGE *image = 0; - unsigned long image_tot_pages = 0; - unsigned long textround; - static PAGE args; - - ret = -1; - - p = NULL; - maxva = 0; - - if (gzread(kernel_gfd, &ehdr, sizeof (Exec)) != sizeof (Exec)) { - PERROR("Error reading kernel image P9 header."); - goto out; - } - - plan9header(&ehdr); - curpos = sizeof (Exec); - - if (ehdr.magic != I_MAGIC) { - PERROR("Image does not have an P9 header."); - goto out; - } - - textround = ((ehdr.text + 0x20 + 4095) >> 12) << 12; - *first_data_page = 0x100000 + textround; - DPRINTF(("ehrd.text is 0x%lx, textround is 0x%lx\n", - ehdr.text, textround)); - - image_tot_pages = - (textround + ehdr.data + ehdr.bss + PAGE_SIZE - 1) >> PAGE_SHIFT; - DPRINTF(("tot pages is %ld\n", image_tot_pages)); - - *virt_load_addr = 0x80100000; - - if ((*virt_load_addr & (PAGE_SIZE - 1)) != 0) { - ERROR("We can only deal with page-aligned load addresses"); - goto out; - } - - if ((*virt_load_addr + (image_tot_pages << PAGE_SHIFT)) > - HYPERVISOR_VIRT_START) { - ERROR("Cannot map all domain memory without hitting Xen space"); - goto out; - } - - /* just malloc an image that is image_tot_pages in size. Then read in - * the image -- text, data, -- to page-rounded alignments. - * then copy into xen . - * this gets BSS zeroed for free - */ - DPRINTF(("Allocate %ld bytes\n", image_tot_pages * sizeof (*image))); - image = calloc(image_tot_pages, sizeof (*image)); - if (!image) - return blah("alloc data"); - /* text starts at 0x20, after the header, just like Unix long ago */ - if (gzread(kernel_gfd, &image[0].data[sizeof (Exec)], ehdr.text) < - ehdr.text) - return blah("read text"); - DPRINTF(("READ TEXT %ld bytes\n", ehdr.text)); - datapage = ((ehdr.text + sizeof (Exec)) / PAGE_SIZE) + 1; - if (gzread(kernel_gfd, image[datapage].data, ehdr.data) < ehdr.data) - return blah("read data"); - DPRINTF(("READ DATA %ld bytes\n", ehdr.data)); - - /* nice contig stuff */ - /* oops need to start at 0x100000 */ - - ret = memcpy_toguest(xc_handle, dom, - image, image_tot_pages * 4096, page_array, 0x100); - DPRINTF(("done copying kernel to guest memory\n")); - - /* now do the bootargs */ - /* in plan 9, the x=y bootargs start at 0x1200 + 64 in real memory */ - /* we'll copy to page 1, so we offset into the page struct at - * 0x200 + 64 - */ - memset(&args, 0, sizeof(args)); - memcpy(&args.data[0x200 + 64], cmdline, strlen(cmdline)); - printf("Copied :%s: to page for args\n", cmdline); - ret = memcpy_toguest(xc_handle, dom, &args, sizeof(args), page_array,1); - //dumpit(xc_handle, dom, 0 /*0x100000>>12*/, 4, page_array) ; - out: - if (image) - free(image); - *pdb_page = image_tot_pages + (0x100000 >> PAGE_SHIFT); - return ret; -} |