mirror of
https://github.com/frida/tinycc
synced 2024-12-01 03:47:01 +03:00
0b8ee7364a
Checked on:
- i386/x86_64 (linux/windows)
- arm/arm64 (rapberry pi)
- riscv64 (simulator)
Not tested for arm softfloat because raspberry pi does not support it.
Modifications:
Makefile:
add arm-asm.c to arm64_FILES
add riscv64-asm.c (new file) to riscv64_FILES
lib/Makefile:
add fetch_and_add_arm.o(new file) to ARM_O
add fetch_and_add_arm64.o(new file) to ARM64_O
add fetch_and_add_riscv64.o(new file) to RISCV64_O
add $(BCHECK_O) to OBJ-arm/OBJ-arm64/OBJ-riscv64
tcc.h:
Enable CONFIG_TCC_BCHECK for arm32/arm64/riscv64
Add arm-asm.c, riscv64-asm.c
tcctok.h:
for arm use memmove4 instead of memcpy4
for arm use memmove8 instead of memcpy8
tccgen.c:
put_extern_sym2: for arm check memcpy/memmove/memset/memmove4/memmove8
only use alloca for i386/x86_64
for arm use memmove4 instead of memcpy4
for arm use memmove8 instead of memcpy8
fix builtin_frame_address/builtin_return_address for arm/riscv64
tccrun.c:
Add riscv64 support
fix rt_getcontext/rt_get_caller_pc for arm
tccelf.c:
tcc_load_dll: Print filename for bad architecture
libtcc.c:
add arm-asm.c/riscv64-asm.c
tcc-doc.texi:
Add arm, arm64, riscv64 support for bound checking
lib/bcheck.c:
add __bound___aeabi_memcpy/__bound___aeabi_memmove
__bound___aeabi_memmove4/__bound___aeabi_memmove8
__bound___aeabi_memset for arm
call fetch_and_add_arm/fetch_and_add_arm64/fetch_and_add_riscv64
__bound_init: Fix type for start/end/ad
__bound_malloc/__bound_memalign/__bound_realloc/__bound_calloc: Use size + 1
arm-gen.c:
add bound checking code like i386/x86_64
assign_regs: only malloc if nb_args != 0
gen_opi/gen_opf: Fix reload problems
arm-link.c:
relocate_plt: Fix address calculating
arm64-gen.c:
add bound checking code like i386/x86_64
load/store: remove VT_BOUNDED from sv->r
arm64_hfa_aux/arm64_hfa_aux: Fix array code
gfunc_prolog: only malloc if n != 0
arm64-link.c:
code_reloc/gotplt_entry_type/relocate: add R_AARCH64_LDST64_ABS_LO12_NC
relocate: Use addXXle instead of writeXXle
riscv64-gen.c:
add bound checking code like i386/x86_64
add NB_ASM_REGS/CONFIG_TCC_ASM
riscv64-link.c:
relocate: Use addXXle instead of writeXXle
i386-gen.c/x86_64-gen.c
gen_bounds_epilog: Fix code (unrelated)
tests/Makefile:
add $(BTESTS) for arm/arm64/riscv64
tests/tests2/Makefile:
Use 85 only on i386/x86_64 because of asm code
Use 113 only on i386/x86_64 because of DLL code
Add 112/114/115/116 for arm/arm64/riscv64
Fix FILTER (failed on riscv64)
tests/boundtest.c:
Only use alloca for i386/x86_64
257 lines
8.5 KiB
C
257 lines
8.5 KiB
C
#ifdef TARGET_DEFS_ONLY
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#define EM_TCC_TARGET EM_AARCH64
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#define R_DATA_32 R_AARCH64_ABS32
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#define R_DATA_PTR R_AARCH64_ABS64
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#define R_JMP_SLOT R_AARCH64_JUMP_SLOT
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#define R_GLOB_DAT R_AARCH64_GLOB_DAT
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#define R_COPY R_AARCH64_COPY
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#define R_RELATIVE R_AARCH64_RELATIVE
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#define R_NUM R_AARCH64_NUM
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#define ELF_START_ADDR 0x00400000
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#define ELF_PAGE_SIZE 0x10000
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#define PCRELATIVE_DLLPLT 1
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#define RELOCATE_DLLPLT 1
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#else /* !TARGET_DEFS_ONLY */
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#include "tcc.h"
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/* Returns 1 for a code relocation, 0 for a data relocation. For unknown
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relocations, returns -1. */
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int code_reloc (int reloc_type)
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{
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switch (reloc_type) {
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case R_AARCH64_ABS32:
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case R_AARCH64_ABS64:
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case R_AARCH64_PREL32:
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case R_AARCH64_MOVW_UABS_G0_NC:
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case R_AARCH64_MOVW_UABS_G1_NC:
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case R_AARCH64_MOVW_UABS_G2_NC:
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case R_AARCH64_MOVW_UABS_G3:
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case R_AARCH64_ADR_PREL_PG_HI21:
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case R_AARCH64_ADD_ABS_LO12_NC:
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case R_AARCH64_ADR_GOT_PAGE:
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case R_AARCH64_LD64_GOT_LO12_NC:
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case R_AARCH64_LDST64_ABS_LO12_NC:
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case R_AARCH64_GLOB_DAT:
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case R_AARCH64_COPY:
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return 0;
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case R_AARCH64_JUMP26:
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case R_AARCH64_CALL26:
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case R_AARCH64_JUMP_SLOT:
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return 1;
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}
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return -1;
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}
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/* Returns an enumerator to describe whether and when the relocation needs a
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GOT and/or PLT entry to be created. See tcc.h for a description of the
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different values. */
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int gotplt_entry_type (int reloc_type)
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{
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switch (reloc_type) {
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case R_AARCH64_PREL32:
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case R_AARCH64_MOVW_UABS_G0_NC:
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case R_AARCH64_MOVW_UABS_G1_NC:
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case R_AARCH64_MOVW_UABS_G2_NC:
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case R_AARCH64_MOVW_UABS_G3:
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case R_AARCH64_ADR_PREL_PG_HI21:
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case R_AARCH64_ADD_ABS_LO12_NC:
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case R_AARCH64_LDST64_ABS_LO12_NC:
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case R_AARCH64_GLOB_DAT:
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case R_AARCH64_JUMP_SLOT:
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case R_AARCH64_COPY:
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return NO_GOTPLT_ENTRY;
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case R_AARCH64_ABS32:
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case R_AARCH64_ABS64:
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case R_AARCH64_JUMP26:
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case R_AARCH64_CALL26:
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return AUTO_GOTPLT_ENTRY;
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case R_AARCH64_ADR_GOT_PAGE:
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case R_AARCH64_LD64_GOT_LO12_NC:
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return ALWAYS_GOTPLT_ENTRY;
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}
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return -1;
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}
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ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr)
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{
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Section *plt = s1->plt;
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uint8_t *p;
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unsigned plt_offset;
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if (s1->output_type == TCC_OUTPUT_DLL)
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tcc_error("DLLs unimplemented!");
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if (plt->data_offset == 0) {
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section_ptr_add(plt, 32);
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}
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plt_offset = plt->data_offset;
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p = section_ptr_add(plt, 16);
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write32le(p, got_offset);
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write32le(p + 4, (uint64_t) got_offset >> 32);
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return plt_offset;
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}
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/* relocate the PLT: compute addresses and offsets in the PLT now that final
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address for PLT and GOT are known (see fill_program_header) */
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ST_FUNC void relocate_plt(TCCState *s1)
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{
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uint8_t *p, *p_end;
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if (!s1->plt)
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return;
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p = s1->plt->data;
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p_end = p + s1->plt->data_offset;
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if (p < p_end) {
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uint64_t plt = s1->plt->sh_addr;
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uint64_t got = s1->got->sh_addr;
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uint64_t off = (got >> 12) - (plt >> 12);
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if ((off + ((uint32_t)1 << 20)) >> 21)
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tcc_error("Failed relocating PLT (off=0x%lx, got=0x%lx, plt=0x%lx)", off, got, plt);
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write32le(p, 0xa9bf7bf0); // stp x16,x30,[sp,#-16]!
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write32le(p + 4, (0x90000010 | // adrp x16,...
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(off & 0x1ffffc) << 3 | (off & 3) << 29));
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write32le(p + 8, (0xf9400211 | // ldr x17,[x16,#...]
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(got & 0xff8) << 7));
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write32le(p + 12, (0x91000210 | // add x16,x16,#...
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(got & 0xfff) << 10));
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write32le(p + 16, 0xd61f0220); // br x17
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write32le(p + 20, 0xd503201f); // nop
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write32le(p + 24, 0xd503201f); // nop
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write32le(p + 28, 0xd503201f); // nop
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p += 32;
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while (p < p_end) {
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uint64_t pc = plt + (p - s1->plt->data);
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uint64_t addr = got + read64le(p);
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uint64_t off = (addr >> 12) - (pc >> 12);
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if ((off + ((uint32_t)1 << 20)) >> 21)
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tcc_error("Failed relocating PLT (off=0x%lx, addr=0x%lx, pc=0x%lx)", off, addr, pc);
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write32le(p, (0x90000010 | // adrp x16,...
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(off & 0x1ffffc) << 3 | (off & 3) << 29));
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write32le(p + 4, (0xf9400211 | // ldr x17,[x16,#...]
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(addr & 0xff8) << 7));
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write32le(p + 8, (0x91000210 | // add x16,x16,#...
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(addr & 0xfff) << 10));
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write32le(p + 12, 0xd61f0220); // br x17
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p += 16;
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}
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}
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}
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void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t addr, addr_t val)
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{
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int sym_index = ELFW(R_SYM)(rel->r_info);
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#ifdef DEBUG_RELOC
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ElfW(Sym) *sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
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#endif
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switch(type) {
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case R_AARCH64_ABS64:
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add64le(ptr, val);
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return;
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case R_AARCH64_ABS32:
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add32le(ptr, val);
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return;
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case R_AARCH64_PREL32:
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write32le(ptr, val - addr);
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return;
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case R_AARCH64_MOVW_UABS_G0_NC:
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write32le(ptr, ((read32le(ptr) & 0xffe0001f) |
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(val & 0xffff) << 5));
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return;
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case R_AARCH64_MOVW_UABS_G1_NC:
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write32le(ptr, ((read32le(ptr) & 0xffe0001f) |
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(val >> 16 & 0xffff) << 5));
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return;
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case R_AARCH64_MOVW_UABS_G2_NC:
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write32le(ptr, ((read32le(ptr) & 0xffe0001f) |
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(val >> 32 & 0xffff) << 5));
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return;
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case R_AARCH64_MOVW_UABS_G3:
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write32le(ptr, ((read32le(ptr) & 0xffe0001f) |
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(val >> 48 & 0xffff) << 5));
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return;
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case R_AARCH64_ADR_PREL_PG_HI21: {
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uint64_t off = (val >> 12) - (addr >> 12);
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if ((off + ((uint64_t)1 << 20)) >> 21)
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tcc_error("R_AARCH64_ADR_PREL_PG_HI21 relocation failed");
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write32le(ptr, ((read32le(ptr) & 0x9f00001f) |
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(off & 0x1ffffc) << 3 | (off & 3) << 29));
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return;
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}
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case R_AARCH64_ADD_ABS_LO12_NC:
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write32le(ptr, ((read32le(ptr) & 0xffc003ff) |
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(val & 0xfff) << 10));
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return;
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case R_AARCH64_LDST64_ABS_LO12_NC:
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write32le(ptr, ((read32le(ptr) & 0xffc003ff) |
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(val & 0xff8) << 7));
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return;
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case R_AARCH64_JUMP26:
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case R_AARCH64_CALL26:
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#ifdef DEBUG_RELOC
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printf ("reloc %d @ 0x%lx: val=0x%lx name=%s\n", type, addr, val,
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(char *) symtab_section->link->data + sym->st_name);
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#endif
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if (((val - addr) + ((uint64_t)1 << 27)) & ~(uint64_t)0xffffffc)
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tcc_error("R_AARCH64_(JUMP|CALL)26 relocation failed"
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" (val=%lx, addr=%lx)", val, addr);
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write32le(ptr, (0x14000000 |
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(uint32_t)(type == R_AARCH64_CALL26) << 31 |
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((val - addr) >> 2 & 0x3ffffff)));
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return;
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case R_AARCH64_ADR_GOT_PAGE: {
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uint64_t off =
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(((s1->got->sh_addr +
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get_sym_attr(s1, sym_index, 0)->got_offset) >> 12) - (addr >> 12));
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if ((off + ((uint64_t)1 << 20)) >> 21)
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tcc_error("R_AARCH64_ADR_GOT_PAGE relocation failed");
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write32le(ptr, ((read32le(ptr) & 0x9f00001f) |
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(off & 0x1ffffc) << 3 | (off & 3) << 29));
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return;
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}
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case R_AARCH64_LD64_GOT_LO12_NC:
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write32le(ptr,
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((read32le(ptr) & 0xfff803ff) |
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((s1->got->sh_addr +
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get_sym_attr(s1, sym_index, 0)->got_offset) & 0xff8) << 7));
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return;
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case R_AARCH64_COPY:
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return;
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case R_AARCH64_GLOB_DAT:
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case R_AARCH64_JUMP_SLOT:
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/* They don't need addend */
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#ifdef DEBUG_RELOC
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printf ("reloc %d @ 0x%lx: val=0x%lx name=%s\n", type, addr,
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val - rel->r_addend,
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(char *) symtab_section->link->data + sym->st_name);
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#endif
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write64le(ptr, val - rel->r_addend);
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return;
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case R_AARCH64_RELATIVE:
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#ifdef TCC_TARGET_PE
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add32le(ptr, val - s1->pe_imagebase);
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#endif
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/* do nothing */
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return;
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default:
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fprintf(stderr, "FIXME: handle reloc type %x at %x [%p] to %x\n",
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type, (unsigned)addr, ptr, (unsigned)val);
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return;
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}
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}
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#endif /* !TARGET_DEFS_ONLY */
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