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117 lines
3.1 KiB
117 lines
3.1 KiB
# SPDX-License-Identifier: Apache-2.0 |
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set(riscv_mabi "lp") |
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set(riscv_march "rv") |
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if(CONFIG_64BIT) |
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string(CONCAT riscv_mabi ${riscv_mabi} "64") |
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string(CONCAT riscv_march ${riscv_march} "64") |
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list(APPEND TOOLCHAIN_C_FLAGS -mcmodel=medany) |
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list(APPEND TOOLCHAIN_LD_FLAGS -mcmodel=medany) |
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else() |
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string(CONCAT riscv_mabi "i" ${riscv_mabi} "32") |
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string(CONCAT riscv_march ${riscv_march} "32") |
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endif() |
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if(CONFIG_RISCV_ISA_RV32E) |
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string(CONCAT riscv_mabi ${riscv_mabi} "e") |
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string(CONCAT riscv_march ${riscv_march} "e") |
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else() |
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string(CONCAT riscv_march ${riscv_march} "i") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_M) |
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string(CONCAT riscv_march ${riscv_march} "m") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_A) |
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string(CONCAT riscv_march ${riscv_march} "a") |
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endif() |
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if(CONFIG_FPU) |
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if(CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION) |
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if(CONFIG_FLOAT_HARD) |
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string(CONCAT riscv_mabi ${riscv_mabi} "d") |
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endif() |
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string(CONCAT riscv_march ${riscv_march} "fd") |
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else() |
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if(CONFIG_FLOAT_HARD) |
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string(CONCAT riscv_mabi ${riscv_mabi} "f") |
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endif() |
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string(CONCAT riscv_march ${riscv_march} "f") |
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endif() |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_C) |
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string(CONCAT riscv_march ${riscv_march} "c") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZICSR) |
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string(CONCAT riscv_march ${riscv_march} "_zicsr") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZIFENCEI) |
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string(CONCAT riscv_march ${riscv_march} "_zifencei") |
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endif() |
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# Check whether we already imply Zaamo/Zalrsc by selecting the A extension; if not - check them |
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# individually and enable them as needed |
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if(NOT CONFIG_RISCV_ISA_EXT_A) |
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if(CONFIG_RISCV_ISA_EXT_ZAAMO) |
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string(CONCAT riscv_march ${riscv_march} "_zaamo") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZALRSC) |
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string(CONCAT riscv_march ${riscv_march} "_zalrsc") |
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endif() |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZBA) |
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string(CONCAT riscv_march ${riscv_march} "_zba") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZBB) |
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string(CONCAT riscv_march ${riscv_march} "_zbb") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZBC) |
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string(CONCAT riscv_march ${riscv_march} "_zbc") |
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endif() |
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if(CONFIG_RISCV_ISA_EXT_ZBS) |
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string(CONCAT riscv_march ${riscv_march} "_zbs") |
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endif() |
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# Check whether we already imply Zmmul by selecting the M extension; if not - enable it |
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if(NOT CONFIG_RISCV_ISA_EXT_M AND |
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CONFIG_RISCV_ISA_EXT_ZMMUL AND |
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"${GCC_COMPILER_VERSION}" VERSION_GREATER_EQUAL 13.0.0) |
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string(CONCAT riscv_march ${riscv_march} "_zmmul") |
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endif() |
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list(APPEND TOOLCHAIN_C_FLAGS -mabi=${riscv_mabi} -march=${riscv_march}) |
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list(APPEND TOOLCHAIN_LD_FLAGS NO_SPLIT -mabi=${riscv_mabi} -march=${riscv_march}) |
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# Flags not supported by llext linker |
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# (regexps are supported and match whole word) |
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set(LLEXT_REMOVE_FLAGS |
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-fno-pic |
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-fno-pie |
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-ffunction-sections |
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-fdata-sections |
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-g.* |
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-Os |
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) |
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# Flags to be added to llext code compilation |
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# mno-relax is needed to stop gcc from generating R_RISCV_ALIGN relocations, |
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# which are currently not supported |
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# -msmall-data-limit=0 disables the "small data" sections such as .sbss and .sdata |
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# only one NOBITS sections is supported at a time, so having .sbss can cause |
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# llext's not to be loadable |
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set(LLEXT_APPEND_FLAGS |
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-mabi=${riscv_mabi} |
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-march=${riscv_march} |
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-mno-relax |
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-msmall-data-limit=0 |
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)
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