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esp32c2: Support riscv floating-point library selection

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This commit is contained in:
Wu Zheng Hui 2022-05-08 17:57:40 +08:00 committed by morris
parent 03aeac1dde
commit 0580d68b69
5 changed files with 32 additions and 2 deletions
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21
Kconfig
View File

@ -278,6 +278,26 @@ mainmenu "Espressif IoT Development Framework Configuration"
endchoice # assertions endchoice # assertions
choice COMPILER_FLOAT_LIB_FROM
prompt "Compiler float lib source"
default COMPILER_FLOAT_LIB_FROM_RVFPLIB if ESP_ROM_HAS_RVFPLIB
default COMPILER_FLOAT_LIB_FROM_GCCLIB
help
In the soft-fp part of libgcc, riscv version is written in C,
and handles all edge cases in IEEE754, which makes it larger
and performance is slow.
RVfplib is an optimized RISC-V library for FP arithmetic on 32-bit
integer processors, for single and double-precision FP.
RVfplib is "fast", but it has a few exceptions from IEEE 754 compliance.
config COMPILER_FLOAT_LIB_FROM_GCCLIB
bool "libgcc"
config COMPILER_FLOAT_LIB_FROM_RVFPLIB
depends on ESP_ROM_HAS_RVFPLIB
bool "librvfp"
endchoice # COMPILER_FLOAT_LIB_FROM
config COMPILER_OPTIMIZATION_ASSERTION_LEVEL config COMPILER_OPTIMIZATION_ASSERTION_LEVEL
int int
default 0 if COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE default 0 if COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE
@ -418,7 +438,6 @@ mainmenu "Espressif IoT Development Framework Configuration"
If enabled, RTL files will be produced during compilation. These files If enabled, RTL files will be produced during compilation. These files
can be used by other tools, for example to calculate call graphs. can be used by other tools, for example to calculate call graphs.
endmenu # Compiler Options endmenu # Compiler Options
menu "Component config" menu "Component config"

6
components/esp_rom/CMakeLists.txt
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@ -58,7 +58,11 @@ if(target STREQUAL "linux")
else() else()
target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/${ld_folder}/${target}.rom.ld") target_linker_script(${COMPONENT_LIB} INTERFACE "${target}/${ld_folder}/${target}.rom.ld")
rom_linker_script("api") rom_linker_script("api")
rom_linker_script("libgcc") if(CONFIG_COMPILER_FLOAT_LIB_FROM_GCCLIB)
rom_linker_script("libgcc")
else()
rom_linker_script("rvfp")
endif()
endif() endif()
idf_build_get_property(time_t_size TIME_T_SIZE) idf_build_get_property(time_t_size TIME_T_SIZE)

4
components/esp_rom/esp32c2/Kconfig.soc_caps.in
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@ -22,3 +22,7 @@ config ESP_ROM_HAS_RETARGETABLE_LOCKING
config ESP_ROM_GET_CLK_FREQ config ESP_ROM_GET_CLK_FREQ
bool bool
default y default y
config ESP_ROM_HAS_RVFPLIB
bool
default y

1
components/esp_rom/esp32c2/esp_rom_caps.h
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@ -11,3 +11,4 @@
#define ESP_ROM_UART_CLK_IS_XTAL (1) // UART clock source is selected to XTAL in ROM #define ESP_ROM_UART_CLK_IS_XTAL (1) // UART clock source is selected to XTAL in ROM
#define ESP_ROM_HAS_RETARGETABLE_LOCKING (1) // ROM was built with retargetable locking #define ESP_ROM_HAS_RETARGETABLE_LOCKING (1) // ROM was built with retargetable locking
#define ESP_ROM_GET_CLK_FREQ (1) // Get clk frequency with rom function `ets_get_cpu_frequency` #define ESP_ROM_GET_CLK_FREQ (1) // Get clk frequency with rom function `ets_get_cpu_frequency`
#define ESP_ROM_HAS_RVFPLIB (1) // ROM has the rvfplib

2
tools/test_apps/system/build_test/sdkconfig.ci.rvfplib Normal file
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@ -0,0 +1,2 @@
CONFIG_IDF_TARGET="esp32c2"
CONFIG_COMPILER_FLOAT_LIB_FROM_GCCLIB=y