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[deliverable/binutils-gdb.git] / bfd / elfxx-riscv.c
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index bd68fe4f1419a72db7929f1edf46f820402b3d34..6936722f9d5c6b76c916db3a7749bf2d810f1fce 100644 (file)
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1,5 +1,5 @@
 /* RISC-V-specific support for ELF.
-   Copyright 2011-2016 Free Software Foundation, Inc.
+   Copyright (C) 2011-2017 Free Software Foundation, Inc.
 
    Contributed by Andrew Waterman (andrew@sifive.com).
    Based on TILE-Gx and MIPS targets.
@@ -63,7 +63,7 @@ static reloc_howto_type howto_table[] =
         "R_RISCV_32",                  /* name */
         FALSE,                         /* partial_inplace */
         0,                             /* src_mask */
-        0xffffffff,                    /* dst_mask */
+        MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
   /* 64 bit relocation.  */
@@ -93,7 +93,7 @@ static reloc_howto_type howto_table[] =
         "R_RISCV_RELATIVE",            /* name */
         FALSE,                         /* partial_inplace */
         0,                             /* src_mask */
-        0xffffffff,                    /* dst_mask */
+        MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
   HOWTO (R_RISCV_COPY,                 /* type */
@@ -106,8 +106,8 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_COPY",                /* name */
         FALSE,                         /* partial_inplace */
-        0x0,                           /* src_mask */
-        0x0,                           /* dst_mask */
+        0,                             /* src_mask */
+        0,                             /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
   HOWTO (R_RISCV_JUMP_SLOT,            /* type */
@@ -120,8 +120,8 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_JUMP_SLOT",           /* name */
         FALSE,                         /* partial_inplace */
-        0x0,                           /* src_mask */
-        0x0,                           /* dst_mask */
+        0,                             /* src_mask */
+        0,                             /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
   /* Dynamic TLS relocations.  */
@@ -135,7 +135,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_DTPMOD32",        /* name */
         FALSE,                         /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -149,7 +149,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_DTPMOD64",        /* name */
         FALSE,                         /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -163,7 +163,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_DTPREL32",        /* name */
         TRUE,                          /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -177,7 +177,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_DTPREL64",        /* name */
         TRUE,                          /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -191,7 +191,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_TPREL32",         /* name */
         FALSE,                         /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -205,7 +205,7 @@ static reloc_howto_type howto_table[] =
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_TLS_TPREL64",         /* name */
         FALSE,                         /* partial_inplace */
-        MINUS_ONE,                     /* src_mask */
+        0,                             /* src_mask */
         MINUS_ONE,                     /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
@@ -238,9 +238,6 @@ static reloc_howto_type howto_table[] =
         TRUE,                          /* pc_relative */
         0,                             /* bitpos */
         complain_overflow_dont,        /* complain_on_overflow */
-                                       /* This needs complex overflow
-                                          detection, because the upper 36
-                                          bits must match the PC + 4.  */
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_JAL",                 /* name */
         FALSE,                         /* partial_inplace */
@@ -264,7 +261,7 @@ static reloc_howto_type howto_table[] =
                                        /* dst_mask */
         TRUE),                         /* pcrel_offset */
 
-  /* 32-bit PC-relative function call (AUIPC/JALR).  */
+  /* Like R_RISCV_CALL, but not locally binding.  */
   HOWTO (R_RISCV_CALL_PLT,             /* type */
         0,                             /* rightshift */
         2,                             /* size */
@@ -460,7 +457,7 @@ static reloc_howto_type howto_table[] =
         ENCODE_STYPE_IMM (-1U),        /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
-  /* TLS LE thread pointer usage.  */
+  /* TLS LE thread pointer usage.  May be relaxed.  */
   HOWTO (R_RISCV_TPREL_ADD,            /* type */
         0,                             /* rightshift */
         2,                             /* size */
@@ -479,7 +476,7 @@ static reloc_howto_type howto_table[] =
   HOWTO (R_RISCV_ADD8,                 /* type */
         0,                             /* rightshift */
         0,                             /* size */
-        32,                            /* bitsize */
+        8,                             /* bitsize */
         FALSE,                         /* pc_relative */
         0,                             /* bitpos */
         complain_overflow_dont,        /* complain_on_overflow */
@@ -665,9 +662,6 @@ static reloc_howto_type howto_table[] =
         TRUE,                          /* pc_relative */
         0,                             /* bitpos */
         complain_overflow_dont,        /* complain_on_overflow */
-                                       /* This needs complex overflow
-                                          detection, because the upper 36
-                                          bits must match the PC + 4.  */
         bfd_elf_generic_reloc,         /* special_function */
         "R_RISCV_RVC_JUMP",            /* name */
         FALSE,                         /* partial_inplace */
@@ -690,7 +684,7 @@ static reloc_howto_type howto_table[] =
         ENCODE_RVC_IMM (-1U),          /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
-  /* High 12 bits of 32-bit load or add.  */
+  /* GP-relative load.  */
   HOWTO (R_RISCV_GPREL_I,              /* type */
         0,                             /* rightshift */
         2,                             /* size */
@@ -705,7 +699,7 @@ static reloc_howto_type howto_table[] =
         ENCODE_ITYPE_IMM (-1U),        /* dst_mask */
         FALSE),                        /* pcrel_offset */
 
-  /* High 12 bits of 32-bit store.  */
+  /* GP-relative store.  */
   HOWTO (R_RISCV_GPREL_S,              /* type */
         0,                             /* rightshift */
         2,                             /* size */
@@ -719,6 +713,126 @@ static reloc_howto_type howto_table[] =
         0,                             /* src_mask */
         ENCODE_STYPE_IMM (-1U),        /* dst_mask */
         FALSE),                        /* pcrel_offset */
+
+  /* TP-relative TLS LE load.  */
+  HOWTO (R_RISCV_TPREL_I,              /* type */
+        0,                             /* rightshift */
+        2,                             /* size */
+        32,                            /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_signed,      /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_TPREL_I",             /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        ENCODE_ITYPE_IMM (-1U),        /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* TP-relative TLS LE store.  */
+  HOWTO (R_RISCV_TPREL_S,              /* type */
+        0,                             /* rightshift */
+        2,                             /* size */
+        32,                            /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_signed,      /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_TPREL_S",             /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        ENCODE_STYPE_IMM (-1U),        /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* The paired relocation may be relaxed.  */
+  HOWTO (R_RISCV_RELAX,                        /* type */
+        0,                             /* rightshift */
+        3,                             /* size */
+        0,                             /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_RELAX",               /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        0,                             /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* 6-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_SUB6,                 /* type */
+        0,                             /* rightshift */
+        0,                             /* size */
+        8,                             /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_SUB6",                /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        0x3f,                          /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* 6-bit in-place setting, for local label subtraction.  */
+  HOWTO (R_RISCV_SET6,                 /* type */
+        0,                             /* rightshift */
+        0,                             /* size */
+        8,                             /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_SET6",                /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        0x3f,                          /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* 8-bit in-place setting, for local label subtraction.  */
+  HOWTO (R_RISCV_SET8,                 /* type */
+        0,                             /* rightshift */
+        0,                             /* size */
+        8,                             /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_SET8",                /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        MINUS_ONE,                     /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* 16-bit in-place setting, for local label subtraction.  */
+  HOWTO (R_RISCV_SET16,                        /* type */
+        0,                             /* rightshift */
+        1,                             /* size */
+        16,                            /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_SET16",               /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        MINUS_ONE,                     /* dst_mask */
+        FALSE),                        /* pcrel_offset */
+
+  /* 32-bit in-place setting, for local label subtraction.  */
+  HOWTO (R_RISCV_SET32,                        /* type */
+        0,                             /* rightshift */
+        2,                             /* size */
+        32,                            /* bitsize */
+        FALSE,                         /* pc_relative */
+        0,                             /* bitpos */
+        complain_overflow_dont,        /* complain_on_overflow */
+        bfd_elf_generic_reloc,         /* special_function */
+        "R_RISCV_SET32",               /* name */
+        FALSE,                         /* partial_inplace */
+        0,                             /* src_mask */
+        MINUS_ONE,                     /* dst_mask */
+        FALSE),                        /* pcrel_offset */
 };
 
 /* A mapping from BFD reloc types to RISC-V ELF reloc types.  */
@@ -772,6 +886,14 @@ static const struct elf_reloc_map riscv_reloc_map[] =
   { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI },
   { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I },
   { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S },
+  { BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I },
+  { BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S },
+  { BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX },
+  { BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 },
+  { BFD_RELOC_RISCV_SET6, R_RISCV_SET6 },
+  { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 },
+  { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 },
+  { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 },
 };
 
 /* Given a BFD reloc type, return a howto structure.  */
GDB Binutils - Deliverables
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