diff options
Diffstat (limited to 'gcc/config/avr/avr.opt')
| -rw-r--r-- | gcc/config/avr/avr.opt | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/gcc/config/avr/avr.opt b/gcc/config/avr/avr.opt index fac3114..5d849da 100644 --- a/gcc/config/avr/avr.opt +++ b/gcc/config/avr/avr.opt @@ -19,7 +19,7 @@ ; <http://www.gnu.org/licenses/>. mcall-prologues -Target Report Mask(CALL_PROLOGUES) +Target Mask(CALL_PROLOGUES) Use subroutines for function prologues and epilogues. mmcu= @@ -27,7 +27,7 @@ Target RejectNegative Joined Var(avr_mmcu) MissingArgError(missing device or arc -mmcu=MCU Select the target MCU. mgas-isr-prologues -Target Report Var(avr_gasisr_prologues) UInteger Init(0) +Target Var(avr_gasisr_prologues) UInteger Init(0) Allow usage of __gcc_isr pseudo instructions in ISR prologues and epilogues. mn-flash= @@ -35,100 +35,100 @@ Target RejectNegative Joined Var(avr_n_flash) UInteger Init(-1) Set the number of 64 KiB flash segments. mskip-bug -Target Report Mask(SKIP_BUG) +Target Mask(SKIP_BUG) Indicate presence of a processor erratum. mrmw -Target Report Mask(RMW) +Target Mask(RMW) Enable Read-Modify-Write (RMW) instructions support/use. mdeb -Target Report Undocumented Mask(ALL_DEBUG) +Target Undocumented Mask(ALL_DEBUG) mlog= Target RejectNegative Joined Undocumented Var(avr_log_details) mshort-calls -Target Report RejectNegative Mask(SHORT_CALLS) +Target RejectNegative Mask(SHORT_CALLS) Use RJMP / RCALL even though CALL / JMP are available. mint8 -Target Report Mask(INT8) +Target Mask(INT8) Use an 8-bit 'int' type. mno-interrupts -Target Report RejectNegative Mask(NO_INTERRUPTS) +Target RejectNegative Mask(NO_INTERRUPTS) Change the stack pointer without disabling interrupts. mbranch-cost= -Target Report Joined RejectNegative UInteger Var(avr_branch_cost) Init(0) +Target Joined RejectNegative UInteger Var(avr_branch_cost) Init(0) Set the branch costs for conditional branch instructions. Reasonable values are small, non-negative integers. The default branch cost is 0. mmain-is-OS_task -Target Report Mask(MAIN_IS_OS_TASK) +Target Mask(MAIN_IS_OS_TASK) Treat main as if it had attribute OS_task. morder1 -Target Report Undocumented Mask(ORDER_1) +Target Undocumented Mask(ORDER_1) morder2 -Target Report Undocumented Mask(ORDER_2) +Target Undocumented Mask(ORDER_2) mtiny-stack -Target Report Mask(TINY_STACK) +Target Mask(TINY_STACK) Change only the low 8 bits of the stack pointer. mrelax -Target Report +Target Relax branches. mpmem-wrap-around -Target Report +Target Make the linker relaxation machine assume that a program counter wrap-around occurs. maccumulate-args -Target Report Mask(ACCUMULATE_OUTGOING_ARGS) +Target Mask(ACCUMULATE_OUTGOING_ARGS) Accumulate outgoing function arguments and acquire/release the needed stack space for outgoing function arguments in function prologue/epilogue. Without this option, outgoing arguments are pushed before calling a function and popped afterwards. This option can lead to reduced code size for functions that call many functions that get their arguments on the stack like, for example printf. mstrict-X -Target Report Var(avr_strict_X) Init(0) +Target Var(avr_strict_X) Init(0) When accessing RAM, use X as imposed by the hardware, i.e. just use pre-decrement, post-increment and indirect addressing with the X register. Without this option, the compiler may assume that there is an addressing mode X+const similar to Y+const and Z+const and emit instructions to emulate such an addressing mode for X. ;; For rationale behind -msp8 see explanation in avr.h. msp8 -Target Report RejectNegative Var(avr_sp8) Init(0) +Target RejectNegative Var(avr_sp8) Init(0) The device has no SPH special function register. This option will be overridden by the compiler driver with the correct setting if presence/absence of SPH can be deduced from -mmcu=MCU. Waddr-space-convert -Warning C Report Var(avr_warn_addr_space_convert) Init(0) +Warning C Var(avr_warn_addr_space_convert) Init(0) Warn if the address space of an address is changed. Wmisspelled-isr -Warning C C++ Report Var(avr_warn_misspelled_isr) Init(1) +Warning C C++ Var(avr_warn_misspelled_isr) Init(1) Warn if the ISR is misspelled, i.e. without __vector prefix. Enabled by default. mfract-convert-truncate -Target Report Mask(FRACT_CONV_TRUNC) +Target Mask(FRACT_CONV_TRUNC) Allow to use truncation instead of rounding towards zero for fractional fixed-point types. mabsdata -Target Report Mask(ABSDATA) +Target Mask(ABSDATA) Assume that all data in static storage can be accessed by LDS / STS. This option is only useful for reduced Tiny devices. mdouble= -Target Report Joined RejectNegative Var(avr_double) Init(0) Enum(avr_bits_e) +Target Joined RejectNegative Var(avr_double) Init(0) Enum(avr_bits_e) -mdouble=<BITS> Use <BITS> bits wide double type. mlong-double= -Target Report Joined RejectNegative Var(avr_long_double) Init(0) Enum(avr_bits_e) +Target Joined RejectNegative Var(avr_long_double) Init(0) Enum(avr_bits_e) -mlong-double=<BITS> Use <BITS> bits wide long double type. nodevicelib -Driver Target Report RejectNegative +Driver Target RejectNegative Do not link against the device-specific library lib<MCU>.a. nodevicespecs -Driver Target Report RejectNegative +Driver Target RejectNegative Do not use the device-specific specs file device-specs/specs-<MCU>. Enum |