diff options
Diffstat (limited to 'gcc/config/arm/arm.h')
| -rw-r--r-- | gcc/config/arm/arm.h | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 0c6131b6d93..3c133a01b0e 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -480,7 +480,25 @@ extern int arm_is_6_or_7; /* Nonzero if PIC code requires explicit qualifiers to generate PLT and GOT relocs rather than the assembler doing so implicitly. Subtargets can override this if required. */ +#ifndef NEED_PLT_GOT #define NEED_PLT_GOT 0 +#endif + +/* Nonzero if we need to refer to the GOT with a PC-relative + offset. In other words, generate + + .word _GLOBAL_OFFSET_TABLE_ - [. - (.Lxx + 8)] + + rather than + + .word _GLOBAL_OFFSET_TABLE_ - (.Lxx + 8) + + The default is true, which matches NetBSD. Subtargets can + override this if required. */ +#ifndef GOT_PCREL +#define GOT_PCREL 1 +#endif + /* Target machine storage Layout. */ @@ -708,7 +726,7 @@ extern const char * structure_size_string; if (flag_pic) \ { \ fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ - call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0; \ + call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ } \ else if (TARGET_APCS_STACK) \ { \ @@ -1245,6 +1263,9 @@ do { \ for (regno = 0; regno <= 10; regno++) \ if (regs_ever_live[regno] && ! call_used_regs[regno]) \ saved_hard_reg = 1, offset += 4; \ + /* PIC register is a fixed reg, so call_used_regs set. */ \ + if (flag_pic && regs_ever_live[PIC_OFFSET_TABLE_REGNUM]) \ + saved_hard_reg = 1, offset += 4; \ for (regno = 16; regno <=23; regno++) \ if (regs_ever_live[regno] && ! call_used_regs[regno]) \ offset += 12; \ @@ -1799,6 +1820,10 @@ extern int arm_pic_register; && (! CONSTANT_POOL_ADDRESS_P (X) \ || ! symbol_mentioned_p (get_pool_constant (X)))) +/* We need to know when we are making a constant pool; this determines + whether data needs to be in the GOT or can be referenced via a GOT + offset. */ +extern int making_const_table; /* Condition code information. */ @@ -2031,6 +2056,19 @@ extern struct rtx_def *arm_compare_op0, *arm_compare_op1; fputs(")", STREAM); \ } \ else output_addr_const(STREAM, X); \ + \ + /* Mark symbols as position independent. We only do this in the \ + .text segment, not in the .data segment. */ \ + if (NEED_PLT_GOT && flag_pic && making_const_table && \ + (GET_CODE(X) == SYMBOL_REF || GET_CODE(X) == LABEL_REF)) \ + { \ + if (GET_CODE(X) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P(X)) \ + fprintf(STREAM, "(GOTOFF)"); \ + else if (GET_CODE (X) == LABEL_REF) \ + fprintf(STREAM, "(GOTOFF)"); \ + else \ + fprintf(STREAM, "(GOT)"); \ + } \ } /* Output code to add DELTA to the first argument, and then jump to FUNCTION. |