1; Command line options for the Renesas RX port of GCC. 2; Copyright (C) 2008-2020 Free Software Foundation, Inc. 3; Contributed by Red Hat. 4; 5; This file is part of GCC. 6; 7; GCC is free software; you can redistribute it and/or modify it under 8; the terms of the GNU General Public License as published by the Free 9; Software Foundation; either version 3, or (at your option) any later 10; version. 11; 12; GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13; WARRANTY; without even the implied warranty of MERCHANTABILITY or 14; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15; for more details. 16; 17; You should have received a copy of the GNU General Public License 18; along with GCC; see the file COPYING3. If not see 19; <http://www.gnu.org/licenses/>. 20;--------------------------------------------------- 21 22HeaderInclude 23config/rx/rx-opts.h 24 25; The default is -fpu -m32bit-doubles. 26 27m64bit-doubles 28Target RejectNegative Mask(64BIT_DOUBLES) Report 29Store doubles in 64 bits. 30 31m32bit-doubles 32Target RejectNegative InverseMask(64BIT_DOUBLES) Report 33Stores doubles in 32 bits. This is the default. 34 35nofpu 36Target RejectNegative Alias(mnofpu) 37Disable the use of RX FPU instructions. 38 39mnofpu 40Target RejectNegative Mask(NO_USE_FPU) Report Undocumented 41 42fpu 43Target RejectNegative InverseMask(NO_USE_FPU) Report 44Enable the use of RX FPU instructions. This is the default. 45 46;--------------------------------------------------- 47 48mcpu= 49Target RejectNegative Joined Var(rx_cpu_type) Report ToLower Enum(rx_cpu_types) Init(RX600) 50Specify the target RX cpu type. 51 52Enum 53Name(rx_cpu_types) Type(enum rx_cpu_types) 54 55EnumValue 56Enum(rx_cpu_types) String(rx610) Value(RX610) 57 58EnumValue 59Enum(rx_cpu_types) String(rx200) Value(RX200) 60 61EnumValue 62Enum(rx_cpu_types) String(rx600) Value(RX600) 63 64EnumValue 65Enum(rx_cpu_types) String(rx100) Value(RX100) 66 67;--------------------------------------------------- 68 69mbig-endian-data 70Target RejectNegative Mask(BIG_ENDIAN_DATA) Report 71Data is stored in big-endian format. 72 73mlittle-endian-data 74Target RejectNegative InverseMask(BIG_ENDIAN_DATA) Report 75Data is stored in little-endian format. (Default). 76 77;--------------------------------------------------- 78 79msmall-data-limit= 80Target RejectNegative Joined UInteger Var(rx_small_data_limit) Init(0) 81Maximum size of global and static variables which can be placed into the small data area. 82 83;--------------------------------------------------- 84 85mrelax 86Target 87Enable linker relaxation. 88 89;--------------------------------------------------- 90 91mmax-constant-size= 92Target RejectNegative Joined UInteger Var(rx_max_constant_size) Init(0) 93Maximum size in bytes of constant values allowed as operands. 94 95;--------------------------------------------------- 96 97mint-register= 98Target RejectNegative Joined UInteger Var(rx_deferred_options) Defer 99Specifies the number of registers to reserve for interrupt handlers. 100 101;--------------------------------------------------- 102 103msave-acc-in-interrupts 104Target Mask(SAVE_ACC_REGISTER) 105Specifies whether interrupt functions should save and restore the accumulator register. 106 107;--------------------------------------------------- 108 109mpid 110Target Mask(PID) 111Enables Position-Independent-Data (PID) mode. 112 113;--------------------------------------------------- 114 115mwarn-multiple-fast-interrupts 116Target Report Var(rx_warn_multiple_fast_interrupts) Init(1) Warning 117Warn when multiple, different, fast interrupt handlers are in the compilation unit. 118 119;--------------------------------------------------- 120 121mgcc-abi 122Target RejectNegative Report Mask(GCC_ABI) 123Enable the use of the old, broken, ABI where all stacked function arguments are aligned to 32-bits. 124 125mrx-abi 126Target RejectNegative Report InverseMask(GCC_ABI) 127Enable the use the standard RX ABI where all stacked function arguments are naturally aligned. This is the default. 128 129;--------------------------------------------------- 130 131mlra 132Target Report Mask(ENABLE_LRA) 133Enable the use of the LRA register allocator. 134 135;--------------------------------------------------- 136 137mallow-string-insns 138Target Report Var(rx_allow_string_insns) Init(1) 139Enables or disables the use of the SMOVF, SMOVB, SMOVU, SUNTIL, SWHILE and RMPA instructions. Enabled by default. 140 141;--------------------------------------------------- 142 143mjsr 144Target Report Mask(JSR) 145Always use JSR, never BSR, for calls. 146