diff options
| -rw-r--r-- | gcc/config/csky/csky.h | 9 | ||||
| -rw-r--r-- | gcc/config/csky/csky.opt | 29 | ||||
| -rw-r--r-- | gcc/config/csky/csky_opts.h | 7 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 18 |
4 files changed, 58 insertions, 5 deletions
diff --git a/gcc/config/csky/csky.h b/gcc/config/csky/csky.h index 2d5a66c..8f4090b 100644 --- a/gcc/config/csky/csky.h +++ b/gcc/config/csky/csky.h @@ -126,6 +126,13 @@ #define TARGET_TLS \ (CSKY_TARGET_ARCH (CK807) || CSKY_TARGET_ARCH (CK810)) +/* Run-time Target Specification. */ +#define TARGET_SOFT_FLOAT (csky_float_abi == CSKY_FLOAT_ABI_SOFT) +/* Use hardware floating point instructions. */ +#define TARGET_HARD_FLOAT (csky_float_abi != CSKY_FLOAT_ABI_SOFT) +/* Use hardware floating point calling convention. */ +#define TARGET_HARD_FLOAT_ABI (csky_float_abi == CSKY_FLOAT_ABI_HARD) + /* Number of loads/stores handled by ldm/stm. */ #define CSKY_MIN_MULTIPLE_STLD 3 #define CSKY_MAX_MULTIPLE_STLD 12 @@ -818,7 +825,7 @@ while (0) {"arch", "%{!march=*:%{!mcpu=*:-march=%(VALUE)}}" }, \ {"cpu", "%{!march=*:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ {"endian", "%{!mbig-endian:%{!mlittle-endian:-m%(VALUE)-endian}}" }, \ - {"float", "%{!msoft-float:%{!mhard-float:-m%(VALUE)-float}}" }, + {"float", "%{!mfloat-abi=*:-mfloat-abi=%(VALUE)}" }, /****************************************************************** diff --git a/gcc/config/csky/csky.opt b/gcc/config/csky/csky.opt index 5846e50..60b51e5 100644 --- a/gcc/config/csky/csky.opt +++ b/gcc/config/csky/csky.opt @@ -57,12 +57,33 @@ Target RejectNegative Report Alias(mlittle-endian) Undocumented ;; assembly. mhard-float -Target Report RejectNegative Mask(HARD_FLOAT) -Enable hardware floating-point instructions. +Target RejectNegative Alias(mfloat-abi=, hard) Undocumented msoft-float -Target Report RejectNegative InverseMask(HARD_FLOAT) -Use library calls to perform floating-point operations (default). +Target RejectNegative Alias(mfloat-abi=, soft) Undocumented + +mfloat-abi=v2 +Target RejectNegative Alias(mfloat-abi=, hard) Undocumented + +mfloat-abi=v1 +Target RejectNegative Alias(mfloat-abi=, softfp) Undocumented + +mfloat-abi= +Target RejectNegative Joined Enum(float_abi_type) Var(csky_float_abi) Init(CSKY_FLOAT_ABI_SOFT) +Specify if floating point hardware should be used. + +Enum +Name(float_abi_type) Type(enum float_abi_type) +Known floating-point ABIs (for use with the -mfloat-abi= option): + +EnumValue +Enum(float_abi_type) String(soft) Value(CSKY_FLOAT_ABI_SOFT) + +EnumValue +Enum(float_abi_type) String(softfp) Value(CSKY_FLOAT_ABI_SOFTFP) + +EnumValue +Enum(float_abi_type) String(hard) Value(CSKY_FLOAT_ABI_HARD) mfpu= Target RejectNegative Joined Enum(csky_fpu) Var(csky_fpu_index) Init(TARGET_FPU_auto) Save diff --git a/gcc/config/csky/csky_opts.h b/gcc/config/csky/csky_opts.h index a6dbf5a..7ee56be 100644 --- a/gcc/config/csky/csky_opts.h +++ b/gcc/config/csky/csky_opts.h @@ -59,5 +59,12 @@ enum csky_fpu_type }; #define CSKY_TARGET_FPU_GET(name) TARGET_FPU_ ## name +enum float_abi_type +{ + CSKY_FLOAT_ABI_SOFT, + CSKY_FLOAT_ABI_SOFTFP, + CSKY_FLOAT_ABI_HARD +}; + #endif /* CSKY_OPTS_H */ diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 5a5159d..060d73e 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -820,6 +820,7 @@ Objective-C and Objective-C++ Dialects}. @gccoptlist{-march=@var{arch} -mcpu=@var{cpu} @gol -mbig-endian -EB -mlittle-endian -EL @gol -mhard-float -msoft-float -mfpu=@var{fpu} -mdouble-float -mfdivdu @gol +-mfloat-abi=@var{name} @gol -melrw -mistack -mmp -mcp -mcache -msecurity -mtrust @gol -mdsp -medsp -mvdsp @gol -mdiv -msmart -mhigh-registers -manchor @gol @@ -20646,6 +20647,23 @@ Specify the C-SKY target processor. Valid values for @var{cpu} are: Select big- or little-endian code. The default is little-endian. +@item -mfloat-abi=@var{name} +@opindex mfloat-abi +Specifies which floating-point ABI to use. Permissible values +are: @samp{soft}, @samp{softfp} and @samp{hard}. + +Specifying @samp{soft} causes GCC to generate output containing +library calls for floating-point operations. +@samp{softfp} allows the generation of code using hardware floating-point +instructions, but still uses the soft-float calling conventions. +@samp{hard} allows generation of floating-point instructions +and uses FPU-specific calling conventions. + +The default depends on the specific target configuration. Note that +the hard-float and soft-float ABIs are not link-compatible; you must +compile your entire program with the same ABI, and link with a +compatible set of libraries. + @item -mhard-float @opindex mhard-float @itemx -msoft-float |