diff options
Diffstat (limited to 'gcc/config/mips/mips.h')
| -rw-r--r-- | gcc/config/mips/mips.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h index 51d383c..3823963 100644 --- a/gcc/config/mips/mips.h +++ b/gcc/config/mips/mips.h @@ -149,6 +149,19 @@ extern const struct mips_rtx_cost_data *mips_cost; #define TARGET_SPLIT_CALLS \ (TARGET_EXPLICIT_RELOCS && TARGET_ABICALLS && !TARGET_NEWABI) +/* True if we're generating a form of -mabicalls in which we can use + operators like %hi and %lo to refer to locally-binding symbols. + We can only do this for -mno-shared, and only then if we can use + relocation operations instead of assembly macros. It isn't really + worth using absolute sequences for 64-bit symbols because GOT + accesses are so much shorter. */ + +#define TARGET_ABSOLUTE_ABICALLS \ + (TARGET_ABICALLS \ + && !TARGET_SHARED \ + && TARGET_EXPLICIT_RELOCS \ + && !ABI_HAS_64BIT_SYMBOLS) + /* True if we can optimize sibling calls. For simplicity, we only handle cases in which call_insn_operand will reject invalid sibcall addresses. There are two cases in which this isn't true: @@ -820,6 +833,7 @@ extern const struct mips_rtx_cost_data *mips_cost; %(subtarget_asm_debugging_spec) \ %{mabi=*} %{!mabi*: %(asm_abi_default_spec)} \ %{mgp32} %{mgp64} %{march=*} %{mxgot:-xgot} \ +%{mshared} %{mno-shared} \ %{msym32} %{mno-sym32} \ %{mtune=*} %{v} \ %(subtarget_asm_spec)" @@ -2281,6 +2295,26 @@ typedef struct mips_args { its operands. */ #define MIPS_BRANCH(OPCODE, OPERANDS) \ "%*" OPCODE "%?\t" OPERANDS "%/" + +/* Return the asm template for a call. INSN is the instruction's mnemonic + ("j" or "jal"), OPERANDS are its operands, and OPNO is the operand number + of the target. + + When generating -mabicalls without explicit relocation operators, + all calls should use assembly macros. Otherwise, all indirect + calls should use "jr" or "jalr"; we will arrange to restore $gp + afterwards if necessary. Finally, we can only generate direct + calls for -mabicalls by temporarily switching to non-PIC mode. */ +#define MIPS_CALL(INSN, OPERANDS, OPNO) \ + (TARGET_ABICALLS && !TARGET_EXPLICIT_RELOCS \ + ? "%*" INSN "\t%" #OPNO "%/" \ + : REG_P (OPERANDS[OPNO]) \ + ? "%*" INSN "r\t%" #OPNO "%/" \ + : TARGET_ABICALLS \ + ? (".option\tpic0\n\t" \ + "%*" INSN "\t%" #OPNO "%/\n\t" \ + ".option\tpic2") \ + : "%*" INSN "\t%" #OPNO "%/") /* Control the assembler format that we output. */ |