Fix ia64-efi image generation on big-endian machines. Deduplicate
some code while on it. Reported by: Leif Lindholm.
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
18866643f7
commit
d5e2a158e1
6 changed files with 243 additions and 286 deletions
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@ -1,3 +1,9 @@
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2013-04-08 Vladimir Serbinenko <phcoder@gmail.com>
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Fix ia64-efi image generation on big-endian machines. Deduplicate
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some code while on it.
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Reported by: Leif Lindholm.
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2013-04-08 Andrey Borzenkov <arvidjaar@gmail.com>
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* grub-core/Makefile.core.def: Add kern/elfXX.c to elf module
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@ -23,6 +23,9 @@
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#include <grub/err.h>
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#include <grub/mm.h>
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#include <grub/i18n.h>
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#include <grub/ia64/reloc.h>
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#define MASK19 ((1 << 19) - 1)
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/* Check if EHDR is a valid ELF header. */
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grub_err_t
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@ -41,126 +44,6 @@ grub_arch_dl_check_header (void *ehdr)
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#pragma GCC diagnostic ignored "-Wcast-align"
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#define MASK20 ((1 << 20) - 1)
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#define MASK19 ((1 << 19) - 1)
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struct unaligned_uint32
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{
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grub_uint32_t val;
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} __attribute__ ((packed));
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static void
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add_value_to_slot_20b (grub_addr_t addr, grub_uint32_t value)
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{
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struct unaligned_uint32 *p;
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switch (addr & 3)
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{
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case 0:
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p = (struct unaligned_uint32 *) ((addr & ~3ULL) + 2);
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p->val = ((((((p->val >> 2) & MASK20) + value) & MASK20) << 2)
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| (p->val & ~(MASK20 << 2)));
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break;
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case 1:
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p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & ~3ULL) + 7);
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p->val = ((((((p->val >> 3) & MASK20) + value) & MASK20) << 3)
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| (p->val & ~(MASK20 << 3)));
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break;
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case 2:
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p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & ~3ULL) + 12);
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p->val = ((((((p->val >> 4) & MASK20) + value) & MASK20) << 4)
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| (p->val & ~(MASK20 << 4)));
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break;
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}
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}
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#define MASKF21 ( ((1 << 23) - 1) & ~((1 << 7) | (1 << 8)) )
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static grub_uint32_t
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add_value_to_slot_21_real (grub_uint32_t a, grub_uint32_t value)
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{
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grub_uint32_t high, mid, low, c;
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low = (a & 0x00007f);
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mid = (a & 0x7fc000) >> 7;
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high = (a & 0x003e00) << 7;
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c = (low | mid | high) + value;
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return (c & 0x7f) | ((c << 7) & 0x7fc000) | ((c >> 7) & 0x0003e00); //0x003e00
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}
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static void
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add_value_to_slot_21 (grub_addr_t addr, grub_uint32_t value)
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{
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struct unaligned_uint32 *p;
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switch (addr & 3)
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{
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case 0:
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p = (struct unaligned_uint32 *) ((addr & ~3ULL) + 2);
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p->val = ((add_value_to_slot_21_real (((p->val >> 2) & MASKF21), value) & MASKF21) << 2) | (p->val & ~(MASKF21 << 2));
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break;
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case 1:
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p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & ~3ULL) + 7);
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p->val = ((add_value_to_slot_21_real (((p->val >> 3) & MASKF21), value) & MASKF21) << 3) | (p->val & ~(MASKF21 << 3));
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break;
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case 2:
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p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & ~3ULL) + 12);
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p->val = ((add_value_to_slot_21_real (((p->val >> 4) & MASKF21), value) & MASKF21) << 4) | (p->val & ~(MASKF21 << 4));
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break;
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}
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}
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static const grub_uint8_t nopm[5] =
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{
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/* [MLX] nop.m 0x0 */
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0x05, 0x00, 0x00, 0x00, 0x01
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};
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static const grub_uint8_t jump[0x20] =
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{
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/* ld8 r16=[r15],8 */
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0x02, 0x80, 0x20, 0x1e, 0x18, 0x14,
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/* mov r14=r1;; */
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0xe0, 0x00, 0x04, 0x00, 0x42, 0x00,
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/* nop.i 0x0 */
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0x00, 0x00, 0x04, 0x00,
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/* ld8 r1=[r15] */
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0x11, 0x08, 0x00, 0x1e, 0x18, 0x10,
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/* mov b6=r16 */
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0x60, 0x80, 0x04, 0x80, 0x03, 0x00,
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/* br.few b6;; */
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0x60, 0x00, 0x80, 0x00
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};
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struct ia64_trampoline
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{
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/* nop.m */
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grub_uint8_t nop[5];
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/* movl r15 = addr*/
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grub_uint8_t addr_hi[6];
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grub_uint8_t e0;
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grub_uint8_t addr_lo[4];
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grub_uint8_t jump[0x20];
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};
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static void
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make_trampoline (struct ia64_trampoline *tr, grub_uint64_t addr)
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{
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COMPILE_TIME_ASSERT (sizeof (struct ia64_trampoline)
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== GRUB_IA64_DL_TRAMP_SIZE);
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grub_memcpy (tr->nop, nopm, sizeof (tr->nop));
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tr->addr_hi[0] = ((addr & 0xc00000) >> 16);
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tr->addr_hi[1] = (addr >> 24) & 0xff;
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tr->addr_hi[2] = (addr >> 32) & 0xff;
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tr->addr_hi[3] = (addr >> 40) & 0xff;
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tr->addr_hi[4] = (addr >> 48) & 0xff;
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tr->addr_hi[5] = (addr >> 56) & 0xff;
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tr->e0 = 0xe0;
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tr->addr_lo[0] = ((addr & 0x000f) << 4) | 0x01;
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tr->addr_lo[1] = (((addr & 0x0070) >> 4) | ((addr & 0x070000) >> 11)
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| ((addr & 0x200000) >> 17));
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tr->addr_lo[2] = ((addr & 0x1f80) >> 5) | ((addr & 0x180000) >> 19);
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tr->addr_lo[3] = ((addr & 0xe000) >> 13) | 0x60;
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grub_memcpy (tr->jump, jump, sizeof (tr->jump));
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}
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/* Relocate symbols. */
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grub_err_t
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grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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@ -170,7 +53,7 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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Elf_Word entsize;
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unsigned i;
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grub_uint64_t *gp, *gpptr;
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struct ia64_trampoline *tr;
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struct grub_ia64_trampoline *tr;
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gp = (grub_uint64_t *) mod->base;
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gpptr = (grub_uint64_t *) mod->got;
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@ -230,13 +113,13 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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case R_IA64_PCREL21B:
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{
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grub_uint64_t noff;
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make_trampoline (tr, value);
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grub_ia64_make_trampoline (tr, value);
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noff = ((char *) tr - (char *) (addr & ~3)) >> 4;
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tr++;
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tr = (struct grub_ia64_trampoline *) ((char *) tr + GRUB_IA64_DL_TRAMP_SIZE);
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if (noff & ~MASK19)
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return grub_error (GRUB_ERR_BAD_OS,
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"trampoline offset too big (%lx)", noff);
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add_value_to_slot_20b (addr, noff);
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grub_ia64_add_value_to_slot_20b (addr, noff);
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}
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break;
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case R_IA64_SEGREL64LSB:
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@ -250,7 +133,7 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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*(grub_uint64_t *) addr += value - addr;
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break;
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case R_IA64_GPREL22:
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add_value_to_slot_21 (addr, value - (grub_addr_t) gp);
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grub_ia64_add_value_to_slot_21 (addr, value - (grub_addr_t) gp);
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break;
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case R_IA64_LTOFF22X:
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@ -259,7 +142,7 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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value = *(grub_uint64_t *) sym->st_value + rel->r_addend;
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case R_IA64_LTOFF_FPTR22:
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*gpptr = value;
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add_value_to_slot_21 (addr, (grub_addr_t) gpptr - (grub_addr_t) gp);
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grub_ia64_add_value_to_slot_21 (addr, (grub_addr_t) gpptr - (grub_addr_t) gp);
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gpptr++;
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break;
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@ -22,9 +22,154 @@
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#include <grub/misc.h>
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#include <grub/err.h>
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#include <grub/mm.h>
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#include <grub/i18n.h>
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#include <grub/ia64/reloc.h>
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#pragma GCC diagnostic ignored "-Wcast-align"
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#define MASK20 ((1 << 20) - 1)
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#define MASK3 (~(grub_addr_t) 3)
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void
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grub_ia64_add_value_to_slot_20b (grub_addr_t addr, grub_uint32_t value)
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{
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grub_uint32_t val;
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switch (addr & 3)
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{
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case 0:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 2)));
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val = (((((val & MASK20) + value) & MASK20) << 2)
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| (val & ~(MASK20 << 2)));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 2),
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grub_cpu_to_le32 (val));
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break;
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case 1:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 7)));
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val = ((((((val >> 3) & MASK20) + value) & MASK20) << 3)
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| (val & ~(MASK20 << 3)));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 7),
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grub_cpu_to_le32 (val));
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break;
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case 2:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 12)));
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val = ((((((val >> 4) & MASK20) + value) & MASK20) << 4)
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| (val & ~(MASK20 << 4)));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 12),
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grub_cpu_to_le32 (val));
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break;
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}
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}
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#define MASKF21 ( ((1 << 23) - 1) & ~((1 << 7) | (1 << 8)) )
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static grub_uint32_t
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add_value_to_slot_21_real (grub_uint32_t a, grub_uint32_t value)
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{
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grub_uint32_t high, mid, low, c;
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low = (a & 0x00007f);
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mid = (a & 0x7fc000) >> 7;
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high = (a & 0x003e00) << 7;
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c = (low | mid | high) + value;
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return (c & 0x7f) | ((c << 7) & 0x7fc000) | ((c >> 7) & 0x0003e00); //0x003e00
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}
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void
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grub_ia64_add_value_to_slot_21 (grub_addr_t addr, grub_uint32_t value)
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{
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grub_uint32_t val;
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switch (addr & 3)
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{
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case 0:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 2)));
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val = ((add_value_to_slot_21_real (((val >> 2) & MASKF21), value)
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& MASKF21) << 2) | (val & ~(MASKF21 << 2));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 2),
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grub_cpu_to_le32 (val));
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break;
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case 1:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 7)));
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val = ((add_value_to_slot_21_real (((val >> 3) & MASKF21), value)
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& MASKF21) << 3) | (val & ~(MASKF21 << 3));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 7),
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grub_cpu_to_le32 (val));
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break;
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case 2:
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val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *)
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(addr & MASK3) + 12)));
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val = ((add_value_to_slot_21_real (((val >> 4) & MASKF21), value)
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& MASKF21) << 4) | (val & ~(MASKF21 << 4));
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grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 12),
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grub_cpu_to_le32 (val));
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break;
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}
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}
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static const grub_uint8_t nopm[5] =
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{
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/* [MLX] nop.m 0x0 */
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0x05, 0x00, 0x00, 0x00, 0x01
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};
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#ifdef GRUB_UTIL
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static grub_uint8_t jump[0x20] =
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{
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/* [MMI] add r15=r15,r1;; */
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0x0b, 0x78, 0x3c, 0x02, 0x00, 0x20,
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/* ld8 r16=[r15],8 */
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0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0,
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/* mov r14=r1;; */
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0x01, 0x08, 0x00, 0x84,
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/* [MIB] ld8 r1=[r15] */
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0x11, 0x08, 0x00, 0x1e, 0x18, 0x10,
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/* mov b6=r16 */
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0x60, 0x80, 0x04, 0x80, 0x03, 0x00,
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/* br.few b6;; */
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0x60, 0x00, 0x80, 0x00
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};
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#else
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static const grub_uint8_t jump[0x20] =
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{
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/* ld8 r16=[r15],8 */
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0x02, 0x80, 0x20, 0x1e, 0x18, 0x14,
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/* mov r14=r1;; */
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0xe0, 0x00, 0x04, 0x00, 0x42, 0x00,
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/* nop.i 0x0 */
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0x00, 0x00, 0x04, 0x00,
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/* ld8 r1=[r15] */
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0x11, 0x08, 0x00, 0x1e, 0x18, 0x10,
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/* mov b6=r16 */
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0x60, 0x80, 0x04, 0x80, 0x03, 0x00,
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/* br.few b6;; */
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0x60, 0x00, 0x80, 0x00
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};
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#endif
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void
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grub_ia64_make_trampoline (struct grub_ia64_trampoline *tr, grub_uint64_t addr)
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{
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COMPILE_TIME_ASSERT (sizeof (struct grub_ia64_trampoline)
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== GRUB_IA64_DL_TRAMP_SIZE);
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grub_memcpy (tr->nop, nopm, sizeof (tr->nop));
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tr->addr_hi[0] = ((addr & 0xc00000) >> 16);
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tr->addr_hi[1] = (addr >> 24) & 0xff;
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tr->addr_hi[2] = (addr >> 32) & 0xff;
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tr->addr_hi[3] = (addr >> 40) & 0xff;
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tr->addr_hi[4] = (addr >> 48) & 0xff;
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tr->addr_hi[5] = (addr >> 56) & 0xff;
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tr->e0 = 0xe0;
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tr->addr_lo[0] = ((addr & 0x000f) << 4) | 0x01;
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tr->addr_lo[1] = (((addr & 0x0070) >> 4) | ((addr & 0x070000) >> 11)
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| ((addr & 0x200000) >> 17));
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tr->addr_lo[2] = ((addr & 0x1f80) >> 5) | ((addr & 0x180000) >> 19);
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tr->addr_lo[3] = ((addr & 0xe000) >> 13) | 0x60;
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grub_memcpy (tr->jump, jump, sizeof (tr->jump));
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}
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void
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grub_ia64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
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grub_size_t *got)
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@ -35,26 +180,26 @@ grub_ia64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
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unsigned i;
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/* Find a symbol table. */
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu32 (e->e_shoff));
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu64 (e->e_shoff));
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i < grub_le_to_cpu16 (e->e_shnum);
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i++, s = (Elf64_Shdr *) ((char *) s + grub_le_to_cpu16 (e->e_shentsize)))
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if (grub_le_to_cpu32 (s->sh_type) == SHT_SYMTAB)
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if (s->sh_type == grub_cpu_to_le32_compile_time (SHT_SYMTAB))
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break;
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if (i == grub_le_to_cpu16 (e->e_shnum))
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return;
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu32 (e->e_shoff));
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for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu64 (e->e_shoff));
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i < grub_le_to_cpu16 (e->e_shnum);
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i++, s = (Elf64_Shdr *) ((char *) s + grub_le_to_cpu16 (e->e_shentsize)))
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if (grub_le_to_cpu32 (s->sh_type) == SHT_RELA)
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if (s->sh_type == grub_cpu_to_le32_compile_time (SHT_RELA))
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{
|
||||
Elf64_Rela *rel, *max;
|
||||
|
||||
for (rel = (Elf64_Rela *) ((char *) e + grub_le_to_cpu32 (s->sh_offset)),
|
||||
max = rel + grub_le_to_cpu32 (s->sh_size) / grub_le_to_cpu16 (s->sh_entsize);
|
||||
for (rel = (Elf64_Rela *) ((char *) e + grub_le_to_cpu64 (s->sh_offset)),
|
||||
max = rel + grub_le_to_cpu64 (s->sh_size) / grub_le_to_cpu64 (s->sh_entsize);
|
||||
rel < max; rel++)
|
||||
switch (ELF64_R_TYPE (grub_le_to_cpu32 (rel->r_info)))
|
||||
switch (ELF64_R_TYPE (grub_le_to_cpu64 (rel->r_info)))
|
||||
{
|
||||
case R_IA64_PCREL21B:
|
||||
cntt++;
|
||||
|
|
|
|||
42
include/grub/ia64/reloc.h
Normal file
42
include/grub/ia64/reloc.h
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2013 Free Software Foundation, Inc.
|
||||
*
|
||||
* GRUB is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* GRUB is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef GRUB_IA64_RELOC_H
|
||||
#define GRUB_IA64_RELOC_H 1
|
||||
|
||||
struct grub_ia64_trampoline;
|
||||
|
||||
void
|
||||
grub_ia64_add_value_to_slot_20b (grub_addr_t addr, grub_uint32_t value);
|
||||
void
|
||||
grub_ia64_add_value_to_slot_21 (grub_addr_t addr, grub_uint32_t value);
|
||||
void
|
||||
grub_ia64_make_trampoline (struct grub_ia64_trampoline *tr, grub_uint64_t addr);
|
||||
|
||||
struct grub_ia64_trampoline
|
||||
{
|
||||
/* nop.m */
|
||||
grub_uint8_t nop[5];
|
||||
/* movl r15 = addr*/
|
||||
grub_uint8_t addr_hi[6];
|
||||
grub_uint8_t e0;
|
||||
grub_uint8_t addr_lo[4];
|
||||
grub_uint8_t jump[0x20];
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -40,6 +40,7 @@
|
|||
#include <stdlib.h>
|
||||
#include <assert.h>
|
||||
#include <grub/efi/pe32.h>
|
||||
#include <grub/ia64/reloc.h>
|
||||
|
||||
#define _GNU_SOURCE 1
|
||||
#include <argp.h>
|
||||
|
|
@ -1201,10 +1202,10 @@ generate_image (const char *dir, const char *prefix,
|
|||
o->subsystem = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION);
|
||||
|
||||
/* Do these really matter? */
|
||||
o->stack_reserve_size = grub_host_to_target32 (0x10000);
|
||||
o->stack_commit_size = grub_host_to_target32 (0x10000);
|
||||
o->heap_reserve_size = grub_host_to_target32 (0x10000);
|
||||
o->heap_commit_size = grub_host_to_target32 (0x10000);
|
||||
o->stack_reserve_size = grub_host_to_target64 (0x10000);
|
||||
o->stack_commit_size = grub_host_to_target64 (0x10000);
|
||||
o->heap_reserve_size = grub_host_to_target64 (0x10000);
|
||||
o->heap_commit_size = grub_host_to_target64 (0x10000);
|
||||
|
||||
o->num_data_directories
|
||||
= grub_host_to_target32 (GRUB_PE32_NUM_DATA_DIRECTORIES);
|
||||
|
|
|
|||
|
|
@ -117,7 +117,7 @@ SUFFIX (relocate_symbols) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
if (image_target->elf_target == EM_IA_64 && ELF_ST_TYPE (sym->st_info)
|
||||
== STT_FUNC)
|
||||
{
|
||||
*jptr = sym->st_value;
|
||||
*jptr = grub_host_to_target64 (sym->st_value);
|
||||
sym->st_value = (char *) jptr - (char *) jumpers + jumpers_addr;
|
||||
jptr++;
|
||||
*jptr = 0;
|
||||
|
|
@ -143,8 +143,8 @@ SUFFIX (get_symbol_address) (Elf_Ehdr *e, Elf_Shdr *s, Elf_Word i,
|
|||
Elf_Sym *sym;
|
||||
|
||||
sym = (Elf_Sym *) ((char *) e
|
||||
+ grub_target_to_host32 (s->sh_offset)
|
||||
+ i * grub_target_to_host32 (s->sh_entsize));
|
||||
+ grub_target_to_host (s->sh_offset)
|
||||
+ i * grub_target_to_host (s->sh_entsize));
|
||||
return sym->st_value;
|
||||
}
|
||||
|
||||
|
|
@ -153,7 +153,7 @@ static Elf_Addr *
|
|||
SUFFIX (get_target_address) (Elf_Ehdr *e, Elf_Shdr *s, Elf_Addr offset,
|
||||
struct image_target_desc *image_target)
|
||||
{
|
||||
return (Elf_Addr *) ((char *) e + grub_target_to_host32 (s->sh_offset) + offset);
|
||||
return (Elf_Addr *) ((char *) e + grub_target_to_host (s->sh_offset) + offset);
|
||||
}
|
||||
|
||||
#ifdef MKIMAGE_ELF64
|
||||
|
|
@ -182,128 +182,6 @@ SUFFIX (count_funcs) (Elf_Ehdr *e, Elf_Shdr *symtab_section,
|
|||
}
|
||||
#endif
|
||||
|
||||
#ifdef MKIMAGE_ELF64
|
||||
struct unaligned_uint32
|
||||
{
|
||||
grub_uint32_t val;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
#define MASK20 ((1 << 20) - 1)
|
||||
#define MASK19 ((1 << 19) - 1)
|
||||
#define MASK3 (~(grub_addr_t) 3)
|
||||
|
||||
static void
|
||||
add_value_to_slot_20b (grub_addr_t addr, grub_uint32_t value)
|
||||
{
|
||||
struct unaligned_uint32 *p;
|
||||
switch (addr & 3)
|
||||
{
|
||||
case 0:
|
||||
p = (struct unaligned_uint32 *) ((addr & MASK3) + 2);
|
||||
p->val = ((((((p->val >> 2) & MASK20) + value) & MASK20) << 2)
|
||||
| (p->val & ~(MASK20 << 2)));
|
||||
break;
|
||||
case 1:
|
||||
p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & MASK3) + 7);
|
||||
p->val = ((((((p->val >> 3) & MASK20) + value) & MASK20) << 3)
|
||||
| (p->val & ~(MASK20 << 3)));
|
||||
break;
|
||||
case 2:
|
||||
p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & MASK3) + 12);
|
||||
p->val = ((((((p->val >> 4) & MASK20) + value) & MASK20) << 4)
|
||||
| (p->val & ~(MASK20 << 4)));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#define MASKF21 ( ((1 << 23) - 1) & ~((1 << 7) | (1 << 8)) )
|
||||
|
||||
static grub_uint32_t
|
||||
add_value_to_slot_21_real (grub_uint32_t a, grub_uint32_t value)
|
||||
{
|
||||
grub_uint32_t high, mid, low, c;
|
||||
low = (a & 0x00007f);
|
||||
mid = (a & 0x7fc000) >> 7;
|
||||
high = (a & 0x003e00) << 7;
|
||||
c = (low | mid | high) + value;
|
||||
return (c & 0x7f) | ((c << 7) & 0x7fc000) | ((c >> 7) & 0x0003e00); //0x003e00
|
||||
}
|
||||
|
||||
static void
|
||||
add_value_to_slot_21 (grub_addr_t addr, grub_uint32_t value)
|
||||
{
|
||||
struct unaligned_uint32 *p;
|
||||
switch (addr & 3)
|
||||
{
|
||||
case 0:
|
||||
p = (struct unaligned_uint32 *) ((addr & MASK3) + 2);
|
||||
p->val = ((add_value_to_slot_21_real (((p->val >> 2) & MASKF21), value) & MASKF21) << 2) | (p->val & ~(MASKF21 << 2));
|
||||
break;
|
||||
case 1:
|
||||
p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & MASK3) + 7);
|
||||
p->val = ((add_value_to_slot_21_real (((p->val >> 3) & MASKF21), value) & MASKF21) << 3) | (p->val & ~(MASKF21 << 3));
|
||||
break;
|
||||
case 2:
|
||||
p = (struct unaligned_uint32 *) ((grub_uint8_t *) (addr & MASK3) + 12);
|
||||
p->val = ((add_value_to_slot_21_real (((p->val >> 4) & MASKF21), value) & MASKF21) << 4) | (p->val & ~(MASKF21 << 4));
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
struct ia64_kernel_trampoline
|
||||
{
|
||||
/* nop.m */
|
||||
grub_uint8_t nop[5];
|
||||
/* movl r15 = addr*/
|
||||
grub_uint8_t addr_hi[6];
|
||||
grub_uint8_t e0;
|
||||
grub_uint8_t addr_lo[4];
|
||||
grub_uint8_t jump[0x20];
|
||||
};
|
||||
|
||||
static grub_uint8_t nopm[5] =
|
||||
{
|
||||
/* [MLX] nop.m 0x0 */
|
||||
0x05, 0x00, 0x00, 0x00, 0x01
|
||||
};
|
||||
|
||||
static grub_uint8_t jump[0x20] =
|
||||
{
|
||||
/* [MMI] add r15=r15,r1;; */
|
||||
0x0b, 0x78, 0x3c, 0x02, 0x00, 0x20,
|
||||
/* ld8 r16=[r15],8 */
|
||||
0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0,
|
||||
/* mov r14=r1;; */
|
||||
0x01, 0x08, 0x00, 0x84,
|
||||
/* [MIB] ld8 r1=[r15] */
|
||||
0x11, 0x08, 0x00, 0x1e, 0x18, 0x10,
|
||||
/* mov b6=r16 */
|
||||
0x60, 0x80, 0x04, 0x80, 0x03, 0x00,
|
||||
/* br.few b6;; */
|
||||
0x60, 0x00, 0x80, 0x00
|
||||
};
|
||||
|
||||
static void
|
||||
make_trampoline (struct ia64_kernel_trampoline *tr, grub_uint64_t addr)
|
||||
{
|
||||
grub_memcpy (tr->nop, nopm, sizeof (tr->nop));
|
||||
tr->addr_hi[0] = ((addr & 0xc00000) >> 16);
|
||||
tr->addr_hi[1] = (addr >> 24) & 0xff;
|
||||
tr->addr_hi[2] = (addr >> 32) & 0xff;
|
||||
tr->addr_hi[3] = (addr >> 40) & 0xff;
|
||||
tr->addr_hi[4] = (addr >> 48) & 0xff;
|
||||
tr->addr_hi[5] = (addr >> 56) & 0xff;
|
||||
tr->e0 = 0xe0;
|
||||
tr->addr_lo[0] = ((addr & 0x000f) << 4) | 0x01;
|
||||
tr->addr_lo[1] = (((addr & 0x0070) >> 4) | ((addr & 0x070000) >> 11)
|
||||
| ((addr & 0x200000) >> 17));
|
||||
tr->addr_lo[2] = ((addr & 0x1f80) >> 5) | ((addr & 0x180000) >> 19);
|
||||
tr->addr_lo[3] = ((addr & 0xe000) >> 13) | 0x60;
|
||||
grub_memcpy (tr->jump, jump, sizeof (tr->jump));
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Deal with relocation information. This function relocates addresses
|
||||
within the virtual address space starting from 0. So only relative
|
||||
addresses can be fully resolved. Absolute addresses must be relocated
|
||||
|
|
@ -320,8 +198,9 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
Elf_Half i;
|
||||
Elf_Shdr *s;
|
||||
#ifdef MKIMAGE_ELF64
|
||||
struct ia64_kernel_trampoline *tr = (void *) (pe_target + tramp_off);
|
||||
struct grub_ia64_trampoline *tr = (void *) (pe_target + tramp_off);
|
||||
grub_uint64_t *gpptr = (void *) (pe_target + got_off);
|
||||
#define MASK19 ((1 << 19) - 1)
|
||||
#endif
|
||||
|
||||
for (i = 0, s = sections;
|
||||
|
|
@ -352,9 +231,9 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
strtab + grub_target_to_host32 (s->sh_name),
|
||||
strtab + grub_target_to_host32 (target_section->sh_name));
|
||||
|
||||
rtab_size = grub_target_to_host32 (s->sh_size);
|
||||
r_size = grub_target_to_host32 (s->sh_entsize);
|
||||
rtab_offset = grub_target_to_host32 (s->sh_offset);
|
||||
rtab_size = grub_target_to_host (s->sh_size);
|
||||
r_size = grub_target_to_host (s->sh_entsize);
|
||||
rtab_offset = grub_target_to_host (s->sh_offset);
|
||||
num_rs = rtab_size / r_size;
|
||||
|
||||
for (j = 0, r = (Elf_Rela *) ((char *) e + rtab_offset);
|
||||
|
|
@ -375,7 +254,7 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
ELF_R_SYM (info), image_target);
|
||||
|
||||
addend = (s->sh_type == grub_target_to_host32 (SHT_RELA)) ?
|
||||
r->r_addend : 0;
|
||||
grub_target_to_host (r->r_addend) : 0;
|
||||
|
||||
switch (image_target->elf_target)
|
||||
{
|
||||
|
|
@ -461,14 +340,14 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
case R_IA64_PCREL21B:
|
||||
{
|
||||
grub_uint64_t noff;
|
||||
make_trampoline (tr, addend + sym_addr);
|
||||
grub_ia64_make_trampoline (tr, addend + sym_addr);
|
||||
noff = ((char *) tr - (char *) pe_target
|
||||
- target_section_addr - (offset & ~3)) >> 4;
|
||||
tr++;
|
||||
if (noff & ~MASK19)
|
||||
grub_util_error ("trampoline offset too big (%"
|
||||
PRIxGRUB_UINT64_T ")", noff);
|
||||
add_value_to_slot_20b ((grub_addr_t) target, noff);
|
||||
grub_ia64_add_value_to_slot_20b ((grub_addr_t) target, noff);
|
||||
}
|
||||
break;
|
||||
|
||||
|
|
@ -478,8 +357,8 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
Elf_Sym *sym;
|
||||
|
||||
sym = (Elf_Sym *) ((char *) e
|
||||
+ grub_target_to_host32 (symtab_section->sh_offset)
|
||||
+ ELF_R_SYM (info) * grub_target_to_host32 (symtab_section->sh_entsize));
|
||||
+ grub_target_to_host (symtab_section->sh_offset)
|
||||
+ ELF_R_SYM (info) * grub_target_to_host (symtab_section->sh_entsize));
|
||||
if (ELF_ST_TYPE (sym->st_info) == STT_FUNC)
|
||||
sym_addr = grub_target_to_host64 (*(grub_uint64_t *) (pe_target
|
||||
+ sym->st_value
|
||||
|
|
@ -487,14 +366,14 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
}
|
||||
case R_IA64_LTOFF_FPTR22:
|
||||
*gpptr = grub_host_to_target64 (addend + sym_addr);
|
||||
add_value_to_slot_21 ((grub_addr_t) target,
|
||||
grub_ia64_add_value_to_slot_21 ((grub_addr_t) target,
|
||||
(char *) gpptr - (char *) pe_target
|
||||
+ image_target->vaddr_offset);
|
||||
gpptr++;
|
||||
break;
|
||||
|
||||
case R_IA64_GPREL22:
|
||||
add_value_to_slot_21 ((grub_addr_t) target,
|
||||
grub_ia64_add_value_to_slot_21 ((grub_addr_t) target,
|
||||
addend + sym_addr);
|
||||
break;
|
||||
case R_IA64_PCREL64LSB:
|
||||
|
|
@ -514,7 +393,8 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
|
|||
+ addend + sym_addr);
|
||||
grub_util_info ("relocating a direct entry to 0x%"
|
||||
PRIxGRUB_UINT64_T " at the offset 0x%llx",
|
||||
*target, (unsigned long long) offset);
|
||||
grub_target_to_host64 (*target),
|
||||
(unsigned long long) offset);
|
||||
break;
|
||||
|
||||
/* We treat LTOFF22X as LTOFF22, so we can ignore LDXMOV. */
|
||||
|
|
@ -650,8 +530,8 @@ SUFFIX (make_reloc_section) (Elf_Ehdr *e, void **out,
|
|||
|
||||
for (i = 0, s = sections; i < num_sections;
|
||||
i++, s = (Elf_Shdr *) ((char *) s + section_entsize))
|
||||
if ((s->sh_type == grub_cpu_to_le32 (SHT_REL)) ||
|
||||
(s->sh_type == grub_cpu_to_le32 (SHT_RELA)))
|
||||
if ((grub_target_to_host32 (s->sh_type) == SHT_REL) ||
|
||||
(grub_target_to_host32 (s->sh_type) == SHT_RELA))
|
||||
{
|
||||
Elf_Rel *r;
|
||||
Elf_Word rtab_size, r_size, num_rs;
|
||||
|
|
@ -662,9 +542,9 @@ SUFFIX (make_reloc_section) (Elf_Ehdr *e, void **out,
|
|||
grub_util_info ("translating the relocation section %s",
|
||||
strtab + grub_le_to_cpu32 (s->sh_name));
|
||||
|
||||
rtab_size = grub_le_to_cpu32 (s->sh_size);
|
||||
r_size = grub_le_to_cpu32 (s->sh_entsize);
|
||||
rtab_offset = grub_le_to_cpu32 (s->sh_offset);
|
||||
rtab_size = grub_target_to_host (s->sh_size);
|
||||
r_size = grub_target_to_host (s->sh_entsize);
|
||||
rtab_offset = grub_target_to_host (s->sh_offset);
|
||||
num_rs = rtab_size / r_size;
|
||||
|
||||
section_address = section_addresses[grub_le_to_cpu32 (s->sh_info)];
|
||||
|
|
@ -676,8 +556,8 @@ SUFFIX (make_reloc_section) (Elf_Ehdr *e, void **out,
|
|||
Elf_Addr info;
|
||||
Elf_Addr offset;
|
||||
|
||||
offset = grub_le_to_cpu32 (r->r_offset);
|
||||
info = grub_le_to_cpu32 (r->r_info);
|
||||
offset = grub_target_to_host (r->r_offset);
|
||||
info = grub_target_to_host (r->r_info);
|
||||
|
||||
/* Necessary to relocate only absolute addresses. */
|
||||
switch (image_target->elf_target)
|
||||
|
|
@ -1027,7 +907,7 @@ SUFFIX (load_image) (const char *kernel_path, grub_size_t *exec_size,
|
|||
*kernel_sz = ALIGN_UP (*kernel_sz, 16);
|
||||
|
||||
grub_ia64_dl_get_tramp_got_size (e, &tramp, &got);
|
||||
tramp *= sizeof (struct ia64_kernel_trampoline);
|
||||
tramp *= sizeof (struct grub_ia64_trampoline);
|
||||
|
||||
ia64_toff = *kernel_sz;
|
||||
*kernel_sz += ALIGN_UP (tramp, 16);
|
||||
|
|
|
|||
Loading…
Reference in a new issue