/* The first must be reloc_howto_type! */
reloc_howto_type howto;
bfd_reloc_code_real_type bfd_type;
- bool (*adjust_reloc_bits)(reloc_howto_type *, bfd_vma *);
+ bool (*adjust_reloc_bits)(bfd *, reloc_howto_type *, bfd_vma *);
const char *larch_reloc_type_name;
} loongarch_reloc_howto_type;
{ EMPTY_HOWTO (C), BFD_RELOC_NONE, NULL, NULL }
static bool
-reloc_bits (reloc_howto_type *howto, bfd_vma *val);
+reloc_bits (bfd *abfd, reloc_howto_type *howto, bfd_vma *val);
static bool
-reloc_bits_b16 (reloc_howto_type *howto, bfd_vma *fix_val);
-static bool
-reloc_bits_b21 (reloc_howto_type *howto, bfd_vma *fix_val);
-static bool
-reloc_bits_b26 (reloc_howto_type *howto, bfd_vma *val);
+reloc_sign_bits (bfd *abfd, reloc_howto_type *howto, bfd_vma *fix_val);
+
+static bfd_reloc_status_type
+loongarch_elf_add_sub_reloc (bfd *, arelent *, asymbol *, void *,
+ asection *, bfd *, char **);
+
+static bfd_reloc_status_type
+loongarch_elf_add_sub_reloc_uleb128 (bfd *, arelent *, asymbol *, void *,
+ asection *, bfd *, char **);
/* This does not include any relocation information, but should be
good enough for GDB or objdump to read the file. */
0x3fffc00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_10_16_S2, /* bfd_reloc_code_real_type */
- reloc_bits_b16, /* adjust_reloc_bits */
+ reloc_sign_bits, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_5_20, /* type (43). */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_0_5_10_16_S2,
/* bfd_reloc_code_real_type */
- reloc_bits_b21, /* adjust_reloc_bits */
+ reloc_sign_bits, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_0_10_10_16_S2, /* type (45). */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_0_10_10_16_S2,
/* bfd_reloc_code_real_type */
- reloc_bits_b26, /* adjust_reloc_bits */
+ reloc_sign_bits, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_U, /* type (46). */
reloc_bits, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
+ /* 8-bit in-place addition, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_ADD8, /* type (47). */
0, /* rightshift. */
- 4, /* size. */
+ 1, /* size. */
8, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_ADD8", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_ADD8, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD8, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 16-bit in-place addition, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_ADD16, /* type (48). */
0, /* rightshift. */
- 4, /* size. */
+ 2, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_ADD16", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_ADD16, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD16, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 24-bit in-place addition, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_ADD24, /* type (49). */
0, /* rightshift. */
- 4, /* size. */
+ 3, /* size. */
24, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_ADD24", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_ADD24, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD24, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 32-bit in-place addition, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_ADD32, /* type (50). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_ADD32", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_ADD32, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffffffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD32, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 64-bit in-place addition, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_ADD64, /* type (51). */
0, /* rightshift. */
8, /* size. */
64, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_ADD64", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_ADD64, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ ALL_ONES, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD64, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 8-bit in-place subtraction, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_SUB8, /* type (52). */
0, /* rightshift. */
- 4, /* size. */
+ 1, /* size. */
8, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_SUB8", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_SUB8, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB8, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 16-bit in-place subtraction, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_SUB16, /* type (53). */
0, /* rightshift. */
- 4, /* size. */
+ 2, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_SUB16", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_SUB16, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB16, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 24-bit in-place subtraction, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_SUB24, /* type (54). */
0, /* rightshift. */
- 4, /* size. */
+ 3, /* size. */
24, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_SUB24", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_SUB24, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB24, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 32-bit in-place subtraction, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_SUB32, /* type (55). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_SUB32", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_SUB32, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0xffffffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB32, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+ /* 64-bit in-place subtraction, for local label subtraction. */
LOONGARCH_HOWTO (R_LARCH_SUB64, /* type (56). */
0, /* rightshift. */
8, /* size. */
64, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
- bfd_elf_generic_reloc, /* special_function. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
"R_LARCH_SUB64", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- ALL_ONES, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_SUB64, /* bfd_reloc_code_real_type */
- NULL, /* adjust_reloc_bits */
- NULL), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ ALL_ONES, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB64, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
LOONGARCH_HOWTO (R_LARCH_GNU_VTINHERIT, /* type (57). */
0, /* rightshift. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_B16", /* name. */
false, /* partial_inplace. */
- 0x3fffc00, /* src_mask */
- 0x3fffc00, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_B16, /* bfd_reloc_code_real_type */
- reloc_bits_b16, /* adjust_reloc_bits */
- "b16"), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0x3fffc00, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_B16, /* bfd_reloc_code_real_type. */
+ reloc_sign_bits, /* adjust_reloc_bits. */
+ "b16"), /* larch_reloc_type_name. */
LOONGARCH_HOWTO (R_LARCH_B21, /* type (65). */
2, /* rightshift. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_B21", /* name. */
false, /* partial_inplace. */
- 0xfc0003e0, /* src_mask */
- 0xfc0003e0, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_B21, /* bfd_reloc_code_real_type */
- reloc_bits_b21, /* adjust_reloc_bits */
- "b21"), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0x3fffc1f, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_B21, /* bfd_reloc_code_real_type. */
+ reloc_sign_bits, /* adjust_reloc_bits. */
+ "b21"), /* larch_reloc_type_name. */
LOONGARCH_HOWTO (R_LARCH_B26, /* type (66). */
2, /* rightshift. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_B26", /* name. */
false, /* partial_inplace. */
- 0, /* src_mask */
- 0x03ffffff, /* dst_mask */
- false, /* pcrel_offset */
- BFD_RELOC_LARCH_B26, /* bfd_reloc_code_real_type */
- reloc_bits_b26, /* adjust_reloc_bits */
- "b26"), /* larch_reloc_type_name */
+ 0, /* src_mask. */
+ 0x03ffffff, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_B26, /* bfd_reloc_code_real_type. */
+ reloc_sign_bits, /* adjust_reloc_bits. */
+ "b26"), /* larch_reloc_type_name. */
LOONGARCH_HOWTO (R_LARCH_ABS_HI20, /* type (67). */
12, /* rightshift. */
12, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
- complain_overflow_signed, /* complain_on_overflow. */
+ complain_overflow_unsigned, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_TLS_LE_LO12", /* name. */
false, /* partial_inplace. */
12, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
- complain_overflow_unsigned, /* complain_on_overflow. */
+ complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_TLS_IE_PC_LO12", /* name. */
false, /* partial_inplace. */
reloc_bits, /* adjust_reloc_bits */
"ie64_pc_hi12"), /* larch_reloc_type_name */
- LOONGARCH_HOWTO (R_LARCH_TLS_IE_HI20, /* type (91). */
+ LOONGARCH_HOWTO (R_LARCH_TLS_IE_HI20, /* type (91). */
12, /* rightshift. */
4, /* size. */
20, /* bitsize. */
reloc_bits, /* adjust_reloc_bits */
"gd_hi20"), /* larch_reloc_type_name */
+ /* 32-bit PC relative. */
LOONGARCH_HOWTO (R_LARCH_32_PCREL, /* type (99). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
true, /* pc_relative. */
0, /* bitpos. */
- complain_overflow_dont, /* complain_on_overflow. */
+ complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_32_PCREL", /* name. */
false, /* partial_inplace. */
NULL, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
+ /* The paired relocation may be relaxed. */
LOONGARCH_HOWTO (R_LARCH_RELAX, /* type (100). */
0, /* rightshift */
1, /* size */
NULL, /* adjust_reloc_bits */
NULL), /* larch_reloc_type_name */
+ /* Delete relaxed instruction. */
+ LOONGARCH_HOWTO (R_LARCH_DELETE, /* type (101). */
+ 0, /* rightshift. */
+ 0, /* size. */
+ 0, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ bfd_elf_generic_reloc, /* special_function. */
+ "R_LARCH_DELETE", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_DELETE, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* Indicates an alignment statement. The addend field encodes how many
+ bytes of NOPs follow the statement. The desired alignment is the
+ addend rounded up to the next power of two. */
+ LOONGARCH_HOWTO (R_LARCH_ALIGN, /* type (102). */
+ 0, /* rightshift. */
+ 0, /* size. */
+ 0, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ bfd_elf_generic_reloc, /* special_function. */
+ "R_LARCH_ALIGN", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ALIGN, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* pcala_hi20 + pcala_lo12 relaxed to pcrel20_s2. */
+ LOONGARCH_HOWTO (R_LARCH_PCREL20_S2, /* type (103). */
+ 2, /* rightshift. */
+ 4, /* size. */
+ 20, /* bitsize. */
+ false, /* pc_relative. */
+ 5, /* bitpos. */
+ complain_overflow_signed, /* complain_on_overflow. */
+ bfd_elf_generic_reloc, /* special_function. */
+ "R_LARCH_PCREL20_S2", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0x1ffffe0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_PCREL20_S2, /* bfd_reloc_code_real_type. */
+ reloc_sign_bits, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* Canonical Frame Address. */
+ LOONGARCH_HOWTO (R_LARCH_CFA, /* type (104). */
+ 0, /* rightshift. */
+ 0, /* size. */
+ 0, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ bfd_elf_generic_reloc, /* special_function. */
+ "R_LARCH_CFA", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_CFA, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* 6-bit in-place addition, for local label subtraction
+ to calculate DW_CFA_advance_loc. */
+ LOONGARCH_HOWTO (R_LARCH_ADD6, /* type (105). */
+ 0, /* rightshift. */
+ 1, /* size. */
+ 8, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
+ "R_LARCH_ADD6", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0x3f, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD6, /* bfd_reloc_code_real_type. */
+ reloc_bits, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* 6-bit in-place subtraction, for local label subtraction
+ to calculate DW_CFA_advance_loc. */
+ LOONGARCH_HOWTO (R_LARCH_SUB6, /* type (106). */
+ 0, /* rightshift. */
+ 1, /* size. */
+ 8, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc, /* special_function. */
+ "R_LARCH_SUB6", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0x3f, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB6, /* bfd_reloc_code_real_type. */
+ reloc_bits, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* The length of unsigned-leb128 is variable, just assume the
+ size is one byte here.
+ uleb128 in-place addition, for local label subtraction. */
+ LOONGARCH_HOWTO (R_LARCH_ADD_ULEB128, /* type (107). */
+ 0, /* rightshift. */
+ 1, /* size. */
+ 0, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc_uleb128, /* special_function. */
+ "R_LARCH_ADD_ULEB128", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_ADD_ULEB128, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* The length of unsigned-leb128 is variable, just assume the
+ size is one byte here.
+ uleb128 in-place subtraction, for local label subtraction. */
+ LOONGARCH_HOWTO (R_LARCH_SUB_ULEB128, /* type (108). */
+ 0, /* rightshift. */
+ 1, /* size. */
+ 0, /* bitsize. */
+ false, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_dont, /* complain_on_overflow. */
+ loongarch_elf_add_sub_reloc_uleb128, /* special_function. */
+ "R_LARCH_SUB_ULEB128", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask. */
+ 0, /* dst_mask. */
+ false, /* pcrel_offset. */
+ BFD_RELOC_LARCH_SUB_ULEB128, /* bfd_reloc_code_real_type. */
+ NULL, /* adjust_reloc_bits. */
+ NULL), /* larch_reloc_type_name. */
+
+ /* 64-bit PC relative. */
+ LOONGARCH_HOWTO (R_LARCH_64_PCREL, /* type (109). */
+ 0, /* rightshift. */
+ 8, /* size. */
+ 64, /* bitsize. */
+ true, /* pc_relative. */
+ 0, /* bitpos. */
+ complain_overflow_signed, /* complain_on_overflow. */
+ bfd_elf_generic_reloc, /* special_function. */
+ "R_LARCH_64_PCREL", /* name. */
+ false, /* partial_inplace. */
+ 0, /* src_mask */
+ 0xffffffffffffffff, /* dst_mask */
+ false, /* pcrel_offset */
+ BFD_RELOC_LARCH_64_PCREL, /* bfd_reloc_code_real_type */
+ NULL, /* adjust_reloc_bits */
+ NULL), /* larch_reloc_type_name */
+
};
reloc_howto_type *
BFD_RELOC_LARCH_SOP_POP_32_S_10_16
BFD_RELOC_LARCH_SOP_POP_32_S_5_20
BFD_RELOC_LARCH_SOP_POP_32_U. */
+
static bool
-reloc_bits (reloc_howto_type *howto, bfd_vma *fix_val)
+reloc_bits (bfd *abfd ATTRIBUTE_UNUSED,
+ reloc_howto_type *howto,
+ bfd_vma *fix_val)
{
- bfd_signed_vma val = ((bfd_signed_vma)(*fix_val)) >> howto->rightshift;
+ bfd_signed_vma val = (bfd_signed_vma)(*fix_val);
+ bfd_signed_vma mask = ((bfd_signed_vma)0x1 << howto->bitsize) - 1;
+
+ val = val >> howto->rightshift;
/* Perform insn bits field. */
- val = val & (((bfd_vma)0x1 << howto->bitsize) - 1);
+ val = val & mask;
val <<= howto->bitpos;
*fix_val = (bfd_vma)val;
return true;
}
-/* Adjust val to perform insn
- R_LARCH_SOP_POP_32_S_10_16_S2
- R_LARCH_B16. */
static bool
-reloc_bits_b16 (reloc_howto_type *howto, bfd_vma *fix_val)
+reloc_sign_bits (bfd *abfd, reloc_howto_type *howto, bfd_vma *fix_val)
{
if (howto->complain_on_overflow != complain_overflow_signed)
return false;
- bfd_signed_vma val = *fix_val;
+ bfd_signed_vma val = (bfd_signed_vma)(*fix_val);
- /* Judge whether 4 bytes align. */
- if (val & ((0x1UL << howto->rightshift) - 1))
- return false;
+ /* Check alignment. FIXME: if rightshift is not alingment. */
+ if (howto->rightshift
+ && (val & ((((bfd_signed_vma) 1) << howto->rightshift) - 1)))
+ {
+ (*_bfd_error_handler) (_("%pB: relocation %s right shift %d error 0x%lx"),
+ abfd, howto->name, howto->rightshift, (long) val);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
- int bitsize = howto->bitsize + howto->rightshift;
- bfd_signed_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
+ bfd_signed_vma mask = ((bfd_signed_vma)0x1 << (howto->bitsize
+ + howto->rightshift - 1)) - 1;
- /* If val < 0, sign bit is 1. */
- if (sig_bit)
+ /* Positive number: high part is all 0;
+ Negative number: if high part is not all 0, high part must be all 1.
+ high part: from sign bit to highest bit. */
+ if ((val & ~mask) && ((val & ~mask) != ~mask))
{
- /* Signed bits is 1. */
- if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
- != LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
- return false;
+ (*_bfd_error_handler) (_("%pB: relocation %s overflow 0x%lx"),
+ abfd, howto->name, (long) val);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
- else
+
+ val = val >> howto->rightshift;
+ /* can delete? */
+ mask = ((bfd_signed_vma)0x1 << howto->bitsize) - 1;
+ val = val & mask;
+
+ switch (howto->type)
{
- /* Signed bits is 0. */
- if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize) & val)
- return false;
+ case R_LARCH_SOP_POP_32_S_0_10_10_16_S2:
+ case R_LARCH_B26:
+ /* Perform insn bits field. 15:0<<10, 25:16>>16. */
+ val = ((val & 0xffff) << 10) | ((val >> 16) & 0x3ff);
+ break;
+ case R_LARCH_SOP_POP_32_S_0_5_10_16_S2:
+ case R_LARCH_B21:
+ /* Perform insn bits field. 15:0<<10, 20:16>>16. */
+ val = ((val & 0xffff) << 10) | ((val >> 16) & 0x1f);
+ break;
+ default:
+ val <<= howto->bitpos;
+ break;
}
- /* Perform insn bits field. */
- val >>= howto->rightshift;
- val = val & (((bfd_vma)0x1 << howto->bitsize) - 1);
- val <<= howto->bitpos;
-
*fix_val = val;
-
return true;
}
-/* Reloc type :
- R_LARCH_SOP_POP_32_S_0_5_10_16_S2
- R_LARCH_B21. */
-static bool
-reloc_bits_b21 (reloc_howto_type *howto,
- bfd_vma *fix_val)
+bool
+loongarch_adjust_reloc_bitsfield (bfd *abfd, reloc_howto_type *howto,
+ bfd_vma *fix_val)
{
- if (howto->complain_on_overflow != complain_overflow_signed)
- return false;
-
- bfd_signed_vma val = *fix_val;
-
- if (val & ((0x1UL << howto->rightshift) - 1))
- return false;
+ BFD_ASSERT (((loongarch_reloc_howto_type *)howto)->adjust_reloc_bits);
+ return ((loongarch_reloc_howto_type *)
+ howto)->adjust_reloc_bits (abfd, howto, fix_val);
+}
- int bitsize = howto->bitsize + howto->rightshift;
- bfd_signed_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
+static bfd_reloc_status_type
+loongarch_elf_add_sub_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+ bfd_vma relocation;
- /* If val < 0. */
- if (sig_bit)
- {
- if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
- != LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
- return false;
- }
- else
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
{
- if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize) & val)
- return false;
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
}
- /* Perform insn bits field. */
- val >>= howto->rightshift;
- val = val & (((bfd_vma)0x1 << howto->bitsize) - 1);
+ if (output_bfd != NULL)
+ return bfd_reloc_continue;
- /* Perform insn bits field. 15:0<<10, 20:16>>16. */
- val = ((val & 0xffff) << 10) | ((val >> 16) & 0x1f);
+ relocation = symbol->value + symbol->section->output_section->vma
+ + symbol->section->output_offset + reloc_entry->addend;
- *fix_val = val;
+ bfd_size_type octets = reloc_entry->address
+ * bfd_octets_per_byte (abfd, input_section);
+ if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd,
+ input_section, octets))
+ return bfd_reloc_outofrange;
- return true;
-}
+ bfd_vma old_value = bfd_get (howto->bitsize, abfd,
+ data + reloc_entry->address);
-/* Reloc type:
- R_LARCH_SOP_POP_32_S_0_10_10_16_S2
- R_LARCH_B26. */
-static bool
-reloc_bits_b26 (reloc_howto_type *howto,
- bfd_vma *fix_val)
-{
- /* Return false if overflow. */
- if (howto->complain_on_overflow != complain_overflow_signed)
- return false;
-
- bfd_signed_vma val = *fix_val;
+ switch (howto->type)
+ {
+ case R_LARCH_ADD6:
+ case R_LARCH_ADD8:
+ case R_LARCH_ADD16:
+ case R_LARCH_ADD32:
+ case R_LARCH_ADD64:
+ relocation = old_value + relocation;
+ break;
+
+ case R_LARCH_SUB6:
+ case R_LARCH_SUB8:
+ case R_LARCH_SUB16:
+ case R_LARCH_SUB32:
+ case R_LARCH_SUB64:
+ relocation = old_value - relocation;
+ break;
+ }
- if (val & ((0x1UL << howto->rightshift) - 1))
- return false;
+ bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address);
- int bitsize = howto->bitsize + howto->rightshift;
- bfd_signed_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
+ return bfd_reloc_ok;
+}
- /* If val < 0. */
- if (sig_bit)
- {
- if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
- != LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
- return false;
- }
- else
+static bfd_reloc_status_type
+loongarch_elf_add_sub_reloc_uleb128 (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+ bfd_vma relocation;
+
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (output_bfd != NULL)
+ return bfd_reloc_continue;
+
+ relocation = symbol->value + symbol->section->output_section->vma
+ + symbol->section->output_offset + reloc_entry->addend;
+
+ bfd_size_type octets = reloc_entry->address
+ * bfd_octets_per_byte (abfd, input_section);
+ if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd,
+ input_section, octets))
+ return bfd_reloc_outofrange;
+
+ unsigned int len = 0;
+ bfd_byte *p = data + reloc_entry->address;
+ bfd_vma old_value = _bfd_read_unsigned_leb128 (abfd, p, &len);
+
+ switch (howto->type)
{
- if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize) & val)
- return false;
- }
-
- /* Perform insn bits field. */
- val >>= howto->rightshift;
- val = val & (((bfd_vma)0x1 << howto->bitsize) - 1);
+ case R_LARCH_ADD_ULEB128:
+ relocation = old_value + relocation;
+ break;
- /* Perform insn bits field. 25:16>>16, 15:0<<10. */
- val = ((val & 0xffff) << 10) | ((val >> 16) & 0x3ff);
+ case R_LARCH_SUB_ULEB128:
+ relocation = old_value - relocation;
+ break;
+ }
- *fix_val = val;
+ bfd_vma mask = (1 << (7 * len)) - 1;
+ relocation = relocation & mask;
+ loongarch_write_unsigned_leb128 (p, len, relocation);
+ return bfd_reloc_ok;
+}
- return true;
+/* Write VALUE in uleb128 format to P.
+ LEN is the uleb128 value length.
+ Return a pointer to the byte following the last byte that was written. */
+bfd_byte *
+loongarch_write_unsigned_leb128 (bfd_byte *p, unsigned int len, bfd_vma value)
+{
+ bfd_byte c;
+ do
+ {
+ c = value & 0x7f;
+ if (len > 1)
+ c |= 0x80;
+ *(p++) = c;
+ value >>= 7;
+ len--;
+ }
+ while (len);
+ return p;
}
-bool
-loongarch_adjust_reloc_bitsfield (reloc_howto_type *howto,
- bfd_vma *fix_val)
+int loongarch_get_uleb128_length (bfd_byte *buf)
{
- BFD_ASSERT (((loongarch_reloc_howto_type *)howto)->adjust_reloc_bits);
- return ((loongarch_reloc_howto_type *)
- howto)->adjust_reloc_bits(howto, fix_val);
+ unsigned int len = 0;
+ _bfd_read_unsigned_leb128 (NULL, buf, &len);
+ return len;
}
projects / thirdparty / binutils-gdb.git / blobdiff