- Relocations of function calls must be accompanied by parameter
- relocation information. This information is carried in the ten
- high-order bits of the addend field. The remaining 22 bits of
- of the addend field are sign-extended to form the Addend.
-
- Note the code to build argument relocations depends on the
- addend being zero. A consequence of this limitation is GAS
- can not perform relocation reductions for function symbols. */
-
- R_HPPA_ABS_CALL_11, /* Symbol + Addend 11 */
- R_HPPA_ABS_CALL_14, /* Symbol + Addend 14 */
- R_HPPA_ABS_CALL_17, /* Symbol + Addend 17 */
- R_HPPA_ABS_CALL_L21, /* L (Symbol, Addend) 21 */
- R_HPPA_ABS_CALL_R11, /* R (Symbol, Addend) 11 */
- R_HPPA_ABS_CALL_R14, /* R (Symbol, Addend) 14 */
- R_HPPA_ABS_CALL_R17, /* R (Symbol, Addend) 17 */
- R_HPPA_ABS_CALL_LS21, /* LS(Symbol, Addend) 21 */
- R_HPPA_ABS_CALL_RS11, /* RS(Symbol, Addend) 11 */
- R_HPPA_ABS_CALL_RS14, /* RS(Symbol, Addend) 14 */
- R_HPPA_ABS_CALL_RS17, /* RS(Symbol, Addend) 17 */
- R_HPPA_ABS_CALL_LD21, /* LD(Symbol, Addend) 21 */
- R_HPPA_ABS_CALL_RD11, /* RD(Symbol, Addend) 11 */
- R_HPPA_ABS_CALL_RD14, /* RD(Symbol, Addend) 14 */
- R_HPPA_ABS_CALL_RD17, /* RD(Symbol, Addend) 17 */
- R_HPPA_ABS_CALL_LR21, /* LR(Symbol, Addend) 21 */
- R_HPPA_ABS_CALL_RR14, /* RR(Symbol, Addend) 14 */
- R_HPPA_ABS_CALL_RR17, /* RR(Symbol, Addend) 17 */
-
- /* 9.3.7. PC-relative call relocation types
-
- PC-relative relocation calculates the difference between an address
- and the location being relocated. This is most often used to
- relocate pc-relative calls. They are otherwise identical to
- their corresponding absolute call relocations. */
-
- R_HPPA_PCREL_CALL_11, /* Symbol - PC + Addend 11 */
- R_HPPA_PCREL_CALL_14, /* Symbol - PC + Addend 14 */
- R_HPPA_PCREL_CALL_17, /* Symbol - PC + Addend 17 */
- R_HPPA_PCREL_CALL_12, /* Symbol - PC + Addend 12 */
- R_HPPA_PCREL_CALL_L21, /* L (Symbol - PC, Addend) 21 */
- R_HPPA_PCREL_CALL_R11, /* R (Symbol - PC, Addend) 11 */
- R_HPPA_PCREL_CALL_R14, /* R (Symbol - PC, Addend) 14 */
- R_HPPA_PCREL_CALL_R17, /* R (Symbol - PC, Addend) 17 */
- R_HPPA_PCREL_CALL_LS21, /* LS(Symbol - PC, Addend) 21 */
- R_HPPA_PCREL_CALL_RS11, /* RS(Symbol - PC, Addend) 11 */
- R_HPPA_PCREL_CALL_RS14, /* RS(Symbol - PC, Addend) 14 */
- R_HPPA_PCREL_CALL_RS17, /* RS(Symbol - PC, Addend) 17 */
- R_HPPA_PCREL_CALL_LD21, /* LD(Symbol - PC, Addend) 21 */
- R_HPPA_PCREL_CALL_RD11, /* RD(Symbol - PC, Addend) 11 */
- R_HPPA_PCREL_CALL_RD14, /* RD(Symbol - PC, Addend) 14 */
- R_HPPA_PCREL_CALL_RD17, /* RD(Symbol - PC, Addend) 17 */
- R_HPPA_PCREL_CALL_LR21, /* LR(Symbol - PC, Addend) 21 */
- R_HPPA_PCREL_CALL_RR14, /* RR(Symbol - PC, Addend) 14 */
- R_HPPA_PCREL_CALL_RR17, /* RR(Symbol - PC, Addend) 17 */
-
- /* 9.3.8. Plabel relocation types
-
- Plabels are designed to allow code pointers to be passed between
- spaces.
-
- Plabels are procedure markers. They are used to denote relocations
- which involve procedures (call, loading the address of a procedure,
- etc). They are necessary for the proper functioning of argument
- relocations. The addend of the relocation should be either 0 (no
- static link) or 2 (static link required). These relocations
- correspond to the P%, LP% and RP% field selectors. */
-
- R_HPPA_PLABEL_32, /* F(Plabel(Symbol,Addend),0) 32 */
- R_HPPA_PLABEL_11, /* F(Plabel(Symbol,Addend),0) 11 */
- R_HPPA_PLABEL_14, /* F(Plabel(Symbol,Addend),0) 14 */
- R_HPPA_PLABEL_L21, /* L(Plabel(Symbol,Addend),0) 21 */
- R_HPPA_PLABEL_R11, /* R(Plabel(Symbol,Addend),0) 11 */
- R_HPPA_PLABEL_R14, /* R(Plabel(Symbol,Addend),0) 14 */
-
- /* 9.3.9. Data linkage table (DLT) relocation types
-
- SOM DLT_REL fixup requests are used to for static data references
- from position-independent code within shared libraries. They are
- similar to the GOT relocation types in some SVR4 implementations. */
-
- R_HPPA_DLT_32, /* F(DLTOFF) 32 */
- R_HPPA_DLT_11, /* F(DLTOFF) 11 */
- R_HPPA_DLT_14, /* F(DLTOFF) 14 */
- R_HPPA_DLT_L21, /* L(DLTOFF) 21 */
- R_HPPA_DLT_R11, /* R(DLTOFF) 11 */
- R_HPPA_DLT_R14, /* R(DLTOFF) 14 */
-
- /* 9.3.10. Relocations for unwinder tables
-
- The unwinder table consists of a series of four-word entries, the
- first two of which are a pair of code addresses. While it would be
- possible to relocate this table using just R_HPPA_32, the amount of
- relocation data resulting would be very large. To reduce that data,
- the following relocation types have been defined.
-
- The first, R_HPPA_UNWIND_ENTRY, merely compresses two R_HPPA_32
- operations into one. It is designed for use in .rel-type
- relocations, where the two 32-bit addends are taken from the unwind
- section itself.
-
- The second, which is designed for use in .rela-type relocations, is
- designed to relocate an entire unwinder table with one relocation
- entry. It has the effect of multiple R_HPPA_UNWIND_ENTRY
- relocations applied to successive unwinder table entries. The
- number of entries to be relocated is given in the r_addend field of
- the relocation entry. The rest of the relocation entry is used in
- a normal way--r_offset is the offset of the first unwind entry in
- the section, while ELF32_R_SYM(r_info) is the code section that all
- the code addresses should be relocated from.
-
- Why can't we use begin/end markers + unwind description bits like
- som? FIXME! */
-
- R_HPPA_UNWIND_ENTRY, /* "128" */
- R_HPPA_UNWIND_ENTRIES, /* Addend * "128" */
-
- /* 9.3.11. Relocation types for complex expressions
-
- New-format SOM fixups support complex expressions by spreading
- the parts of the expression across multiple entries. ELF for
- HPPA will have a similar mechanism, although support for it may
- be optional. There are two main reasons for defining it: first,
- the need to translate complex SOM fixup expressions to ELF, and
- second, to cover combinations of expression, field and format not
- available with other relocation types.
-
- ELF expression relocation entries are interpreted as postfix-form
- expressions. They may be evaluated using a push-down stack.
-
- Usually, the addend field of these expression relocation entries is
- unused, with the following exceptions:
-
- R_HPPA_PUSH_CONST: The addend field contains the constant.
-
- R_HPPA_PUSH_PROC: The high-order 10 bits of the addend field
- contain parameter relocation information. The rest ofthe addend
- field is unused.
-
- R_HPPA_LSHIFT, R_HPPA_ARITH_RSHIFT and R_HPPA_LOGIC_RSHIFT:
- The addend field normally gives the amount to shift.
- However, if that amount is zero, the shift amount is
- popped from the top of the stack prior to popping the
- amount to be shifted. */
-
- R_HPPA_PUSH_CONST, /* push Addend - - */
- R_HPPA_PUSH_PC, /* push PC + Addend - - */
- R_HPPA_PUSH_SYM, /* push Symbol + Addend - - */
- R_HPPA_PUSH_GOTOFF, /* push Symbol - GOT + Addend - - */
- R_HPPA_PUSH_ABS_CALL, /* push Symbol + Addend - - */
- R_HPPA_PUSH_PCREL_CALL, /* push Symbol - PC + Addend - - */
- R_HPPA_PUSH_PLABEL, /* push Plabel(Symbol) - - */
- R_HPPA_MAX, /* pop A and B, push max(B,A) - - */
- R_HPPA_MIN, /* pop A and B, push min(B,A) - - */
- R_HPPA_ADD, /* pop A and B, push B + A - - */
- R_HPPA_SUB, /* pop A and B, push B - A - - */
- R_HPPA_MULT, /* pop A and B, push B * A - - */
- R_HPPA_DIV, /* pop A and B, push B / A - - */
- R_HPPA_MOD, /* pop A and B, push B % A - - */
- R_HPPA_AND, /* pop A and B, push B & A - - */
- R_HPPA_OR, /* pop A and B, push B | A - - */
- R_HPPA_XOR, /* pop A and B, push B ^ A - - */
- R_HPPA_NOT, /* pop A, push ~A - - */
- R_HPPA_LSHIFT, /* pop A, push A << Addend - - */
- R_HPPA_ARITH_RSHIFT, /* pop A, push A >> Addend - - */
- R_HPPA_LOGIC_RSHIFT, /* pop A, push A >> Addend - - */
- R_HPPA_EXPR_F, /* pop A, push A + Addend F - */
- R_HPPA_EXPR_L, /* pop A, push L(A,Addend) L - */
- R_HPPA_EXPR_R, /* pop A, push R(A,Addend) R - */
- R_HPPA_EXPR_LS, /* pop A, push LS(A,Addend) LS - */
- R_HPPA_EXPR_RS, /* pop A, push RS(A,Addend) RS - */
- R_HPPA_EXPR_LD, /* pop A, push LD(A,Addend) LD - */
- R_HPPA_EXPR_RD, /* pop A, push RD(A,Addend) RD - */
- R_HPPA_EXPR_LR, /* pop A, push LR(A,Addend) LR - */
- R_HPPA_EXPR_RR, /* pop A, push RR(A,Addend) RR - */
- R_HPPA_EXPR_32, /* pop - 32 */
- R_HPPA_EXPR_21, /* pop - 21 */
- R_HPPA_EXPR_11, /* pop - 11 */
- R_HPPA_EXPR_14, /* pop - 14 */
- R_HPPA_EXPR_17, /* pop - 17 */
- R_HPPA_EXPR_12, /* pop - 12 */
- R_HPPA_STUB_CALL_17, /* Symbol + Addend - 17 */
- R_HPPA_UNIMPLEMENTED /* N/A */
- }
-elf32_hppa_reloc_type;
-
-#define ELF_HOWTO_TABLE_SIZE R_HPPA_UNIMPLEMENTED + 1
-#define N_HPPA_RELOCS R_HPPA_UNIMPLEMENTED + 1
projects / deliverable / binutils-gdb.git / blobdiff