diff options
Diffstat (limited to 'gcc/config/nds32/nds32.h')
| -rw-r--r-- | gcc/config/nds32/nds32.h | 112 |
1 files changed, 77 insertions, 35 deletions
diff --git a/gcc/config/nds32/nds32.h b/gcc/config/nds32/nds32.h index 38847e5697c..8e4ebecf3be 100644 --- a/gcc/config/nds32/nds32.h +++ b/gcc/config/nds32/nds32.h @@ -1,5 +1,5 @@ /* Definitions of target machine of Andes NDS32 cpu for GNU compiler - Copyright (C) 2012-2014 Free Software Foundation, Inc. + Copyright (C) 2012-2015 Free Software Foundation, Inc. Contributed by Andes Technology Corporation. This file is part of GCC. @@ -24,6 +24,14 @@ /* The following are auxiliary macros or structure declarations that are used all over the nds32.c and nds32.h. */ +/* Use SYMBOL_FLAG_MACH_DEP to define our own symbol_ref flag. + It is used in nds32_encode_section_info() to store flag in symbol_ref + in case the symbol should be placed in .rodata section. + So that we can check it in nds32_legitimate_address_p(). */ +#define NDS32_SYMBOL_FLAG_RODATA \ + (SYMBOL_FLAG_MACH_DEP << 0) +#define NDS32_SYMBOL_REF_RODATA_P(x) \ + ((SYMBOL_REF_FLAGS (x) & NDS32_SYMBOL_FLAG_RODATA) != 0) /* Computing the Length of an Insn. */ #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ @@ -109,7 +117,7 @@ enum nds32_16bit_address_type /* ------------------------------------------------------------------------ */ /* Define maximum numbers of registers for passing arguments. */ -#define NDS32_MAX_REGS_FOR_ARGS 6 +#define NDS32_MAX_GPR_REGS_FOR_ARGS 6 /* Define the register number for first argument. */ #define NDS32_GPR_ARG_FIRST_REGNUM 0 @@ -117,6 +125,10 @@ enum nds32_16bit_address_type /* Define the register number for return value. */ #define NDS32_GPR_RET_FIRST_REGNUM 0 +/* Define the first integer register number. */ +#define NDS32_FIRST_GPR_REGNUM 0 +/* Define the last integer register number. */ +#define NDS32_LAST_GPR_REGNUM 31 /* Define double word alignment bits. */ #define NDS32_DOUBLE_WORD_ALIGNMENT 64 @@ -154,19 +166,27 @@ enum nds32_16bit_address_type b) Otherwise, the register number can be odd or even value. 2. If it is required ONLY one register, the register number can be odd or even value. */ -#define NDS32_AVAILABLE_REGNUM_FOR_ARG(reg_offset, mode, type) \ - ((NDS32_NEED_N_REGS_FOR_ARG (mode, type) > 1) \ - ? ((NDS32_MODE_TYPE_ALIGN (mode, type) > PARM_BOUNDARY) \ - ? (((reg_offset) + NDS32_GPR_ARG_FIRST_REGNUM + 1) & ~1) \ - : ((reg_offset) + NDS32_GPR_ARG_FIRST_REGNUM)) \ +#define NDS32_AVAILABLE_REGNUM_FOR_GPR_ARG(reg_offset, mode, type) \ + ((NDS32_NEED_N_REGS_FOR_ARG (mode, type) > 1) \ + ? ((NDS32_MODE_TYPE_ALIGN (mode, type) > PARM_BOUNDARY) \ + ? (((reg_offset) + NDS32_GPR_ARG_FIRST_REGNUM + 1) & ~1) \ + : ((reg_offset) + NDS32_GPR_ARG_FIRST_REGNUM)) \ : ((reg_offset) + NDS32_GPR_ARG_FIRST_REGNUM)) /* This macro is to check if there are still available registers - for passing argument. */ -#define NDS32_ARG_PASS_IN_REG_P(reg_offset, mode, type) \ - (((reg_offset) < NDS32_MAX_REGS_FOR_ARGS) \ - && ((reg_offset) + NDS32_NEED_N_REGS_FOR_ARG (mode, type) \ - <= NDS32_MAX_REGS_FOR_ARGS)) + for passing argument, which must be entirely in registers. */ +#define NDS32_ARG_ENTIRE_IN_GPR_REG_P(reg_offset, mode, type) \ + ((NDS32_AVAILABLE_REGNUM_FOR_GPR_ARG (reg_offset, mode, type) \ + + NDS32_NEED_N_REGS_FOR_ARG (mode, type)) \ + <= (NDS32_GPR_ARG_FIRST_REGNUM \ + + NDS32_MAX_GPR_REGS_FOR_ARGS)) + +/* This macro is to check if there are still available registers + for passing argument, either entirely in registers or partially + in registers. */ +#define NDS32_ARG_PARTIAL_IN_GPR_REG_P(reg_offset, mode, type) \ + (NDS32_AVAILABLE_REGNUM_FOR_GPR_ARG (reg_offset, mode, type) \ + < NDS32_GPR_ARG_FIRST_REGNUM + NDS32_MAX_GPR_REGS_FOR_ARGS) /* This macro is to check if the register is required to be saved on stack. If call_used_regs[regno] == 0, regno is the callee-saved register. @@ -203,18 +223,19 @@ struct GTY(()) machine_function /* The padding bytes in callee-saved area may be required. */ int callee_saved_area_padding_bytes; - /* The first required register that should be saved on stack - for va_args (one named argument + nameless arguments). */ - int va_args_first_regno; - /* The last required register that should be saved on stack - for va_args (one named argument + nameless arguments). */ - int va_args_last_regno; - /* The first required callee-saved register. */ int callee_saved_regs_first_regno; /* The last required callee-saved register. */ int callee_saved_regs_last_regno; + /* The padding bytes in varargs area may be required. */ + int va_args_area_padding_bytes; + + /* The first required register that should be saved on stack for va_args. */ + int va_args_first_regno; + /* The last required register that should be saved on stack for va_args. */ + int va_args_last_regno; + /* Indicate that whether this function needs prologue/epilogue code generation. */ int naked_p; @@ -226,7 +247,7 @@ struct GTY(()) machine_function /* A C structure that contains the arguments information. */ typedef struct { - unsigned int reg_offset; + unsigned int gpr_offset; } nds32_cumulative_args; /* ------------------------------------------------------------------------ */ @@ -331,6 +352,22 @@ enum nds32_builtins #define TARGET_ISA_V3 (nds32_arch_option == ARCH_V3) #define TARGET_ISA_V3M (nds32_arch_option == ARCH_V3M) +#define TARGET_CMODEL_SMALL \ + (nds32_cmodel_option == CMODEL_SMALL) +#define TARGET_CMODEL_MEDIUM \ + (nds32_cmodel_option == CMODEL_MEDIUM) +#define TARGET_CMODEL_LARGE \ + (nds32_cmodel_option == CMODEL_LARGE) + +/* When -mcmodel=small or -mcmodel=medium, + compiler may generate gp-base instruction directly. */ +#define TARGET_GP_DIRECT \ + (nds32_cmodel_option == CMODEL_SMALL\ + || nds32_cmodel_option == CMODEL_MEDIUM) + +#define TARGET_SOFT_FLOAT 1 +#define TARGET_HARD_FLOAT 0 + /* ------------------------------------------------------------------------ */ /* Controlling the Compilation Driver. */ @@ -344,13 +381,10 @@ enum nds32_builtins #define ASM_SPEC \ " %{mbig-endian:-EB} %{mlittle-endian:-EL}" -/* If user issues -mrelax, -mforce-fp-as-gp, or -mex9, - we need to pass '--relax' to linker. - Besides, for -mex9, we need to further pass '--mex9'. */ +/* If user issues -mrelax, we need to pass '--relax' to linker. */ #define LINK_SPEC \ " %{mbig-endian:-EB} %{mlittle-endian:-EL}" \ - " %{mrelax|mforce-fp-as-gp|mex9:--relax}" \ - " %{mex9:--mex9}" + " %{mrelax:--relax}" #define LIB_SPEC \ " -lc -lgloss" @@ -375,17 +409,22 @@ enum nds32_builtins #define ENDFILE_SPEC \ " %{!mno-ctor-dtor:crtend1.o%s}" -/* The TARGET_BIG_ENDIAN_DEFAULT is defined if we configure gcc - with --target=nds32be-* setting. - Check gcc/config.gcc for more information. - In addition, currently we only have elf toolchain, - where mgp-direct is always the default. */ +/* The TARGET_BIG_ENDIAN_DEFAULT is defined if we + configure gcc with --target=nds32be-* setting. + Check gcc/config.gcc for more information. */ #ifdef TARGET_BIG_ENDIAN_DEFAULT -#define MULTILIB_DEFAULTS { "mbig-endian", "mgp-direct" } +# define NDS32_ENDIAN_DEFAULT "mbig-endian" #else -#define MULTILIB_DEFAULTS { "mlittle-endian", "mgp-direct" } +# define NDS32_ENDIAN_DEFAULT "mlittle-endian" #endif +/* Currently we only have elf toolchain, + where -mcmodel=medium is always the default. */ +#define NDS32_CMODEL_DEFAULT "mcmodel=medium" + +#define MULTILIB_DEFAULTS \ + { NDS32_ENDIAN_DEFAULT, NDS32_CMODEL_DEFAULT } + /* Run-time Target Specification. */ @@ -553,7 +592,7 @@ enum nds32_builtins /* Tell IRA to use the order we define rather than messing it up with its own cost calculations. */ -#define HONOR_REG_ALLOC_ORDER +#define HONOR_REG_ALLOC_ORDER optimize_size /* The number of consecutive hard regs needed starting at reg "regno" for holding a value of mode "mode". */ @@ -663,7 +702,8 @@ enum reg_class #define STACK_POINTER_OFFSET 0 -#define FIRST_PARM_OFFSET(fundecl) 0 +#define FIRST_PARM_OFFSET(fundecl) \ + (NDS32_DOUBLE_WORD_ALIGN_P (crtl->args.pretend_args_size) ? 0 : 4) #define RETURN_ADDR_RTX(count, frameaddr) \ nds32_return_addr_rtx (count, frameaddr) @@ -709,7 +749,7 @@ enum reg_class 'comparison of unsigned expression >= 0 is always true' warning. */ #define FUNCTION_ARG_REGNO_P(regno) \ (((int) regno - NDS32_GPR_ARG_FIRST_REGNUM >= 0) \ - && ((int) regno - NDS32_GPR_ARG_FIRST_REGNUM < NDS32_MAX_REGS_FOR_ARGS)) + && ((int) regno - NDS32_GPR_ARG_FIRST_REGNUM < NDS32_MAX_GPR_REGS_FOR_ARGS)) #define DEFAULT_PCC_STRUCT_RETURN 0 @@ -813,6 +853,8 @@ enum reg_class /* Position Independent Code. */ +#define PIC_OFFSET_TABLE_REGNUM GP_REGNUM + /* Defining the Output Assembler Language. */ |