From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/kern/ia64/dl_helper.c | 241 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 grub-core/kern/ia64/dl_helper.c (limited to 'grub-core/kern/ia64/dl_helper.c') diff --git a/grub-core/kern/ia64/dl_helper.c b/grub-core/kern/ia64/dl_helper.c new file mode 100644 index 0000000..c601595 --- /dev/null +++ b/grub-core/kern/ia64/dl_helper.c @@ -0,0 +1,241 @@ +/* dl.c - arch-dependent part of loadable module support */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2004,2005,2007,2009 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 . + */ + +#include +#include +#include +#include +#include +#include +#include + +#pragma GCC diagnostic ignored "-Wcast-align" + +#define MASK20 ((1 << 20) - 1) +#define MASK3 (~(grub_addr_t) 3) + +void +grub_ia64_set_immu64 (grub_addr_t addr, grub_uint64_t val) +{ + /* Copied from binutils. */ + grub_uint64_t *ptr = ((grub_uint64_t *) (addr & MASK3)); + grub_uint64_t t0, t1; + + t0 = grub_le_to_cpu64 (ptr[0]); + t1 = grub_le_to_cpu64 (ptr[1]); + + /* tmpl/s: bits 0.. 5 in t0 + slot 0: bits 5..45 in t0 + slot 1: bits 46..63 in t0, bits 0..22 in t1 + slot 2: bits 23..63 in t1 */ + + /* First, clear the bits that form the 64 bit constant. */ + t0 &= ~(0x3ffffLL << 46); + t1 &= ~(0x7fffffLL + | (( (0x07fLL << 13) | (0x1ffLL << 27) + | (0x01fLL << 22) | (0x001LL << 21) + | (0x001LL << 36)) << 23)); + + t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */ + t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */ + t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */ + | (((val >> 7) & 0x1ff) << 27) /* imm9d */ + | (((val >> 16) & 0x01f) << 22) /* imm5c */ + | (((val >> 21) & 0x001) << 21) /* ic */ + | (((val >> 63) & 0x001) << 36)) << 23; /* i */ + + ptr[0] = t0; + ptr[1] = t1; +} + +void +grub_ia64_add_value_to_slot_20b (grub_addr_t addr, grub_uint32_t value) +{ + grub_uint32_t val; + switch (addr & 3) + { + case 0: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 2))); + val = (((((val & MASK20) + value) & MASK20) << 2) + | (val & ~(MASK20 << 2))); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 2), + grub_cpu_to_le32 (val)); + break; + case 1: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 7))); + val = ((((((val >> 3) & MASK20) + value) & MASK20) << 3) + | (val & ~(MASK20 << 3))); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 7), + grub_cpu_to_le32 (val)); + break; + case 2: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 12))); + val = ((((((val >> 4) & MASK20) + value) & MASK20) << 4) + | (val & ~(MASK20 << 4))); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 12), + grub_cpu_to_le32 (val)); + 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 +} + +void +grub_ia64_add_value_to_slot_21 (grub_addr_t addr, grub_uint32_t value) +{ + grub_uint32_t val; + switch (addr & 3) + { + case 0: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 2))); + val = ((add_value_to_slot_21_real (((val >> 2) & MASKF21), value) + & MASKF21) << 2) | (val & ~(MASKF21 << 2)); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 2), + grub_cpu_to_le32 (val)); + break; + case 1: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 7))); + val = ((add_value_to_slot_21_real (((val >> 3) & MASKF21), value) + & MASKF21) << 3) | (val & ~(MASKF21 << 3)); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 7), + grub_cpu_to_le32 (val)); + break; + case 2: + val = grub_le_to_cpu32 (grub_get_unaligned32 (((grub_uint8_t *) + (addr & MASK3) + 12))); + val = ((add_value_to_slot_21_real (((val >> 4) & MASKF21), value) + & MASKF21) << 4) | (val & ~(MASKF21 << 4)); + grub_set_unaligned32 (((grub_uint8_t *) (addr & MASK3) + 12), + grub_cpu_to_le32 (val)); + break; + } +} + +static const grub_uint8_t nopm[5] = + { + /* [MLX] nop.m 0x0 */ + 0x05, 0x00, 0x00, 0x00, 0x01 + }; + +#ifdef GRUB_UTIL +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 + }; +#else +static const grub_uint8_t jump[0x20] = + { + /* ld8 r16=[r15],8 */ + 0x02, 0x80, 0x20, 0x1e, 0x18, 0x14, + /* mov r14=r1;; */ + 0xe0, 0x00, 0x04, 0x00, 0x42, 0x00, + /* nop.i 0x0 */ + 0x00, 0x00, 0x04, 0x00, + /* 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 + }; +#endif + +void +grub_ia64_make_trampoline (struct grub_ia64_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)); +} + +grub_err_t +grub_ia64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp, + grub_size_t *got) +{ + const Elf64_Ehdr *e = ehdr; + grub_size_t cntt = 0, cntg = 0; + const Elf64_Shdr *s; + unsigned i; + + for (i = 0, s = (Elf64_Shdr *) ((char *) e + grub_le_to_cpu64 (e->e_shoff)); + i < grub_le_to_cpu16 (e->e_shnum); + i++, s = (Elf64_Shdr *) ((char *) s + grub_le_to_cpu16 (e->e_shentsize))) + if (s->sh_type == grub_cpu_to_le32_compile_time (SHT_RELA)) + { + const Elf64_Rela *rel, *max; + + for (rel = (Elf64_Rela *) ((char *) e + grub_le_to_cpu64 (s->sh_offset)), + max = (const Elf64_Rela *) ((char *) rel + grub_le_to_cpu64 (s->sh_size)); + rel < max; rel = (const Elf64_Rela *) ((char *) rel + grub_le_to_cpu64 (s->sh_entsize))) + switch (ELF64_R_TYPE (grub_le_to_cpu64 (rel->r_info))) + { + case R_IA64_PCREL21B: + cntt++; + break; + case R_IA64_LTOFF_FPTR22: + case R_IA64_LTOFF22X: + case R_IA64_LTOFF22: + cntg++; + break; + } + } + *tramp = cntt * sizeof (struct grub_ia64_trampoline); + *got = cntg * sizeof (grub_uint64_t); + + return GRUB_ERR_NONE; +} + -- cgit v1.2.3