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| author | Marek Michalkiewicz <marekm@linux.org.pl> | 2000-07-03 18:51:38 +0200 |
|---|---|---|
| committer | Denis Chertykov <denisc@gcc.gnu.org> | 2000-07-03 20:51:38 +0400 |
| commit | c4984bad36ef142b95331ca1552b7498fa78f019 (patch) | |
| tree | 36cc90f578a0749cf42c94fbbd73a418032a02e2 /gcc/config/avr/libgcc.S | |
| parent | 2e6377216286353f8c6fc8b1ecf7dab9e225ce00 (diff) | |
| download | gcc-c4984bad36ef142b95331ca1552b7498fa78f019.zip gcc-c4984bad36ef142b95331ca1552b7498fa78f019.tar.gz gcc-c4984bad36ef142b95331ca1552b7498fa78f019.tar.bz2 | |
avr.c (out_adj_frame_ptr): Make "frame pointer change too big for -mtiny-stack" a warning, if larger than 63.
* config/avr/avr.c (out_adj_frame_ptr): Make "frame pointer
change too big for -mtiny-stack" a warning, if larger than 63.
(out_set_stack_ptr): Change the logic so -mno-interrupts is
always safe to use on possible future devices.
(function_prologue): Write SPH before SPL, for consistency.
If interrupt_func_p true, we know we have enabled interrupts.
(avr_num_arg_regs): New function. Round up to even number of
bytes if no -mpack-args or if calling a libgcc function.
(function_arg, function_arg_advance): Use it.
(output_movsisf, ashlsi3_out, ashrsi3_out, lshrsi3_out):
Output "movw" if available.
(out_tsthi, out_tstsi, ashlqi3_out, lshrqi3_out): Change uses
of TEST_HARD_REG_CLASS macro to test_hard_reg_class function.
(asm_output_section_name): Add blanks for consistent output.
(encode_section_info): Set TREE_READONLY for progmem data to
avoid gas warnings about changed section attributes.
(avr_hard_regno_mode_ok): Force non-QImode data to start in
even numbered registers on devices with "movw".
* config/avr/avr.h (MASK_*): Define bits for target_flags.
(TARGET_SWITCHES): Mark help strings for translation.
Add new -mpack-args and -menhanced switches.
(TARGET_OPTIONS): Mark help strings for translation.
(progmem_section): Add section attributes.
* config/avr/avr.md (*movhi, call_insn, call_value_insn):
Output "movw" if available.
(mulqi3, mulqihi3, umulqihi3, mulhi3, *tablejump_enh):
New patterns.
* config/avr/libgcc.S (_mulqi3, _divqi3): Update to the new
call convention (arguments aligned on even registers).
(_cleanup, _exit): Make weak symbols libc can override.
From-SVN: r34847
Diffstat (limited to 'gcc/config/avr/libgcc.S')
| -rw-r--r-- | gcc/config/avr/libgcc.S | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/gcc/config/avr/libgcc.S b/gcc/config/avr/libgcc.S index 00aa50b..e5ecbff 100644 --- a/gcc/config/avr/libgcc.S +++ b/gcc/config/avr/libgcc.S @@ -39,7 +39,7 @@ Boston, MA 02111-1307, USA. */ *******************************************************/ #if defined (Lmulqi3) -#define r_arg2 r25 /* multiplicand */ +#define r_arg2 r22 /* multiplicand */ #define r_arg1 r24 /* multiplier */ #define r_res __tmp_reg__ /* result */ @@ -201,8 +201,8 @@ __mulsi3_exit: Division 8 / 8 => (result + remainder) *******************************************************/ #define r_rem r26 /* remainder */ -#define r_arg1 r25 /* dividend */ -#define r_arg2 r24 /* divisor */ +#define r_arg1 r24 /* dividend */ +#define r_arg2 r22 /* divisor */ #define r_cnt r27 /* loop count */ #if defined (Lumodqi3) @@ -272,8 +272,7 @@ __divqi3_1: sbrc __tmp_reg__,7 neg r_arg1 ; correct result sign __divqi3_exit: - mov r24,r_arg1 ; put result to return register - ret + ret ; result already in r24 (r_arg1) .endfunc #endif /* defined (Ldivqi3) */ @@ -434,8 +433,6 @@ _umodsi3_ret: mov r24,r_remHL mov r23,r_remH mov r22,r_remL - .global _cleanup -_cleanup: ret .endfunc #endif /* defined (Lumodsi3) */ @@ -630,9 +627,12 @@ __epilogue_restores__: #endif /* defined (Lepilogue) */ #ifdef L__exit - .global _exit + .weak _exit .func _exit _exit: rjmp _exit + .weak _cleanup +_cleanup: + ret .endfunc #endif |