[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [avr-libc-dev] fplib and MUL
|
From: |
Björn Haase |
|
Subject: |
Re: [avr-libc-dev] fplib and MUL |
|
Date: |
Sun, 9 Oct 2005 21:20:11 +0200 |
|
User-agent: |
KMail/1.7.1 |
> Some more ideas will come as I do this optimisation. My question now is
> that is someone doing something in this area? As first I will go and try
> to make the multiplication and look if the device groups avr-gcc
> entirely have or have not MUL instruction available.
The relevant files for searching this information are
binutils/src/include/opcodes/avr.h
and
binutils/src/gas/config/tc-avr.c .
The first file defines the instruction set and the second the capabilities of
the different individual devices. Summing up: All of the avr5 devices are
assumed to have hw multipliers.
Yours,
Bjoern.
P.S.:
Here is the relevant excerpt from avr.h
#define AVR_ISA_1200 0x0001 /* in the beginning there was ... */
#define AVR_ISA_LPM 0x0002 /* device has LPM */
#define AVR_ISA_LPMX 0x0004 /* device has LPM Rd,Z[+] */
#define AVR_ISA_SRAM 0x0008 /* device has SRAM (LD, ST, PUSH, POP, ...) */
#define AVR_ISA_MEGA 0x0020 /* device has >8K program memory (JMP and CALL
supported, no 8K wrap on RJMP and RCALL) */
#define AVR_ISA_MUL 0x0040 /* device has new core (MUL, FMUL, ...) */
#define AVR_ISA_ELPM 0x0080 /* device has >64K program memory (ELPM) */
#define AVR_ISA_ELPMX 0x0100 /* device has ELPM Rd,Z[+] */
#define AVR_ISA_SPM 0x0200 /* device can program itself */
#define AVR_ISA_BRK 0x0400 /* device has BREAK (on-chip debug) */
#define AVR_ISA_EIND 0x0800 /* device has >128K program memory (none yet) */
#define AVR_ISA_MOVW 0x1000 /* device has MOVW */
#define AVR_ISA_TINY1 (AVR_ISA_1200 | AVR_ISA_LPM)
#define AVR_ISA_2xxx (AVR_ISA_TINY1 | AVR_ISA_SRAM)
#define AVR_ISA_TINY2 (AVR_ISA_2xxx | AVR_ISA_MOVW | AVR_ISA_LPMX | \
AVR_ISA_SPM | AVR_ISA_BRK)
#define AVR_ISA_M8 (AVR_ISA_2xxx | AVR_ISA_MUL | AVR_ISA_MOVW | \
AVR_ISA_LPMX | AVR_ISA_SPM)
#define AVR_ISA_M603 (AVR_ISA_2xxx | AVR_ISA_MEGA)
#define AVR_ISA_M103 (AVR_ISA_M603 | AVR_ISA_ELPM)
#define AVR_ISA_M161 (AVR_ISA_M603 | AVR_ISA_MUL | AVR_ISA_MOVW | \
AVR_ISA_LPMX | AVR_ISA_SPM)
#define AVR_ISA_94K (AVR_ISA_M603 | AVR_ISA_MUL | AVR_ISA_MOVW |
AVR_ISA_LPMX)
#define AVR_ISA_M323 (AVR_ISA_M161 | AVR_ISA_BRK)
#define AVR_ISA_M128 (AVR_ISA_M323 | AVR_ISA_ELPM | AVR_ISA_ELPMX)
#define AVR_ISA_ALL 0xFFFF
{"avr1", AVR_ISA_TINY1, bfd_mach_avr1},
{"avr2", AVR_ISA_TINY2, bfd_mach_avr2},
{"avr3", AVR_ISA_M103, bfd_mach_avr3},
{"avr4", AVR_ISA_M8, bfd_mach_avr4},
{"avr5", AVR_ISA_ALL, bfd_mach_avr5},
{"at90s1200", AVR_ISA_1200, bfd_mach_avr1},
{"attiny10", AVR_ISA_TINY1, bfd_mach_avr1}, /* XXX -> tn11 */
{"attiny11", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny12", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny15", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny28", AVR_ISA_TINY1, bfd_mach_avr1},
{"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 4433 */
{"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2},
{"attiny22", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 2343 */
{"attiny26", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8515 */
{"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8535 */
{"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90c8534", AVR_ISA_2xxx, bfd_mach_avr2},
{"at86rf401", AVR_ISA_2xxx, bfd_mach_avr2},
{"attiny13", AVR_ISA_TINY2, bfd_mach_avr2},
{"attiny2313",AVR_ISA_TINY2, bfd_mach_avr2},
{"atmega603", AVR_ISA_M603, bfd_mach_avr3}, /* XXX -> m103 */
{"atmega103", AVR_ISA_M103, bfd_mach_avr3},
{"at43usb320",AVR_ISA_M103, bfd_mach_avr3},
{"at43usb355",AVR_ISA_M603, bfd_mach_avr3},
{"at76c711", AVR_ISA_M603, bfd_mach_avr3},
{"atmega48", AVR_ISA_M8, bfd_mach_avr4},
{"atmega8", AVR_ISA_M8, bfd_mach_avr4},
{"atmega83", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8535 */
{"atmega85", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8 */
{"atmega88", AVR_ISA_M8, bfd_mach_avr4},
{"atmega8515",AVR_ISA_M8, bfd_mach_avr4},
{"atmega8535",AVR_ISA_M8, bfd_mach_avr4},
{"atmega16", AVR_ISA_M323, bfd_mach_avr5},
{"atmega161", AVR_ISA_M161, bfd_mach_avr5},
{"atmega162", AVR_ISA_M323, bfd_mach_avr5},
{"atmega163", AVR_ISA_M161, bfd_mach_avr5},
{"atmega165", AVR_ISA_M323, bfd_mach_avr5},
{"atmega168", AVR_ISA_M323, bfd_mach_avr5},
{"atmega169", AVR_ISA_M323, bfd_mach_avr5},
{"atmega32", AVR_ISA_M323, bfd_mach_avr5},
{"atmega323", AVR_ISA_M323, bfd_mach_avr5},
{"atmega325", AVR_ISA_M323, bfd_mach_avr5},
{"atmega3250",AVR_ISA_M323, bfd_mach_avr5},
{"atmega64", AVR_ISA_M323, bfd_mach_avr5},
{"atmega128", AVR_ISA_M128, bfd_mach_avr5},
{"atmega645", AVR_ISA_M323, bfd_mach_avr5},
{"atmega6450",AVR_ISA_M323, bfd_mach_avr5},
{"at90can128",AVR_ISA_M128, bfd_mach_avr5},
{"at94k", AVR_ISA_94K, bfd_mach_avr5},
and here the relevant fraction from tc-avr.c
{"avr1", AVR_ISA_TINY1, bfd_mach_avr1},
{"avr2", AVR_ISA_TINY2, bfd_mach_avr2},
{"avr3", AVR_ISA_M103, bfd_mach_avr3},
{"avr4", AVR_ISA_M8, bfd_mach_avr4},
{"avr5", AVR_ISA_ALL, bfd_mach_avr5},
{"at90s1200", AVR_ISA_1200, bfd_mach_avr1},
{"attiny10", AVR_ISA_TINY1, bfd_mach_avr1}, /* XXX -> tn11 */
{"attiny11", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny12", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny15", AVR_ISA_TINY1, bfd_mach_avr1},
{"attiny28", AVR_ISA_TINY1, bfd_mach_avr1},
{"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 4433 */
{"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2},
{"attiny22", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 2343 */
{"attiny26", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8515 */
{"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8535 */
{"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2},
{"at90c8534", AVR_ISA_2xxx, bfd_mach_avr2},
{"at86rf401", AVR_ISA_2xxx, bfd_mach_avr2},
{"attiny13", AVR_ISA_TINY2, bfd_mach_avr2},
{"attiny2313",AVR_ISA_TINY2, bfd_mach_avr2},
{"atmega603", AVR_ISA_M603, bfd_mach_avr3}, /* XXX -> m103 */
{"atmega103", AVR_ISA_M103, bfd_mach_avr3},
{"at43usb320",AVR_ISA_M103, bfd_mach_avr3},
{"at43usb355",AVR_ISA_M603, bfd_mach_avr3},
{"at76c711", AVR_ISA_M603, bfd_mach_avr3},
{"atmega48", AVR_ISA_M8, bfd_mach_avr4},
{"atmega8", AVR_ISA_M8, bfd_mach_avr4},
{"atmega83", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8535 */
{"atmega85", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8 */
{"atmega88", AVR_ISA_M8, bfd_mach_avr4},
{"atmega8515",AVR_ISA_M8, bfd_mach_avr4},
{"atmega8535",AVR_ISA_M8, bfd_mach_avr4},
{"atmega16", AVR_ISA_M323, bfd_mach_avr5},
{"atmega161", AVR_ISA_M161, bfd_mach_avr5},
{"atmega162", AVR_ISA_M323, bfd_mach_avr5},
{"atmega163", AVR_ISA_M161, bfd_mach_avr5},
{"atmega165", AVR_ISA_M323, bfd_mach_avr5},
{"atmega168", AVR_ISA_M323, bfd_mach_avr5},
{"atmega169", AVR_ISA_M323, bfd_mach_avr5},
{"atmega32", AVR_ISA_M323, bfd_mach_avr5},
{"atmega323", AVR_ISA_M323, bfd_mach_avr5},
{"atmega325", AVR_ISA_M323, bfd_mach_avr5},
{"atmega3250",AVR_ISA_M323, bfd_mach_avr5},
{"atmega64", AVR_ISA_M323, bfd_mach_avr5},
{"atmega128", AVR_ISA_M128, bfd_mach_avr5},
{"atmega645", AVR_ISA_M323, bfd_mach_avr5},
{"atmega6450",AVR_ISA_M323, bfd_mach_avr5},
{"at90can128",AVR_ISA_M128, bfd_mach_avr5},
{"at94k", AVR_ISA_94K, bfd_mach_avr5},