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* [Bug c/21834] New: Error when passing unsigned long long as function arguments @ 2005-05-31 1:22 ulyssesric at yahoo dot com dot tw 2005-05-31 3:35 ` [Bug target/21834] " pinskia at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: ulyssesric at yahoo dot com dot tw @ 2005-05-31 1:22 UTC (permalink / raw) To: gcc-bugs I have a function that takes two usigned-long-long variables and two unsigned-char variables as argument. Here is the sample code: typedef unsigned char byte_t; typedef unsigned long long qword_t; void foo( byte_t state, qword_t srcAddr, byte_t routeOptions, qword_t dstAddr ) { ... } void main(void) { .... foo(0x00,0x1234ll,0x01, 0x5678ll); .... } Compiled with avr-gcc 3.4.3, for Atmega 128: avr-gcc -mmcu=atmega128 -g -Os -Wall -Wa,-adhlns=func1.o -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -ffreestanding -c func1.c -o func1.o When I tried to check the values of variable srcAddr and dstAddr within foo() using UART, they are not what they should be. srcAddr is something like 0xDE00000000001A6D, and dstAddr is 0x7800000000000056. However, If I change the order of these arguments to : void foo( qword_t srcAddr, qword_t dstAddr, byte_t state, byte_t routeOptions ) { ... } and the result would be correct. -- Summary: Error when passing unsigned long long as function arguments Product: gcc Version: 3.4.3 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ulyssesric at yahoo dot com dot tw CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: X86 (Linux, Win32) and PowerPC (Darwin) GCC target triplet: AVR, Atmega128 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21834 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/21834] Error when passing unsigned long long as function arguments 2005-05-31 1:22 [Bug c/21834] New: Error when passing unsigned long long as function arguments ulyssesric at yahoo dot com dot tw @ 2005-05-31 3:35 ` pinskia at gcc dot gnu dot org 2005-05-31 3:38 ` ulyssesric at yahoo dot com dot tw ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-05-31 3:35 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-31 02:50 ------- Did you read: <http://gcc.gnu.org/bugs.html> because it says we don't want source with "...". -- What |Removed |Added ---------------------------------------------------------------------------- Component|c |target Keywords| |wrong-code http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21834 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/21834] Error when passing unsigned long long as function arguments 2005-05-31 1:22 [Bug c/21834] New: Error when passing unsigned long long as function arguments ulyssesric at yahoo dot com dot tw 2005-05-31 3:35 ` [Bug target/21834] " pinskia at gcc dot gnu dot org @ 2005-05-31 3:38 ` ulyssesric at yahoo dot com dot tw 2005-05-31 3:41 ` ulyssesric at yahoo dot com dot tw 2005-06-19 14:02 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: ulyssesric at yahoo dot com dot tw @ 2005-05-31 3:38 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From ulyssesric at yahoo dot com dot tw 2005-05-31 03:35 ------- Fine, I'll list all codes if you insist: #include <avr/io.h> typedef unsigned char byte_t; typedef unsigned long long qword_t; void uart_init(void) { // 115200 & 8N1 UBRR1H = 0x00; UBRR1L = 0x08; UCSR1A |= (0x01<<U2X1); UCSR1C = 0x06; UCSR1B &= ~0x04; UCSR1B |= ((0x01<<RXEN1) | (0x01<<TXEN1)); } void uart_putchar(byte_t octet) { UDR1 = octet; while (!(UCSR1A & (0x01<<UDRE1))); } void uart_write(byte_t *octet, uint8_t len) { while (len--) { UDR1 = *octet++; while (!(UCSR1A & (0x01<<UDRE1))); } } void foo( byte_t state, qword_t srcAddr, byte_t routeOptions, qword_t dstAddr ) { uart_putchar(state); uart_write((byte_t *)(&srcAddr),8); uart_putchar(routeOptions); uart_write((byte_t *)(&dstAddr),8); } void main(void) { uart_init(); foo(0x00,0x1234ll,0x01, 0x5678ll); while(1); } and the output is: D1, 34,12,D1,D1,D1,D1,D1,D1, 01, AB,CD,00,CF,00,80,00,78 in hexdecimal format. Obviously it's incorrect. If I change the code to: #include <avr/io.h> typedef unsigned char byte_t; typedef unsigned long long qword_t; void uart_init(void) { // 115200 & 8N1 UBRR1H = 0x00; UBRR1L = 0x08; UCSR1A |= (0x01<<U2X1); UCSR1C = 0x06; UCSR1B &= ~0x04; UCSR1B |= ((0x01<<RXEN1) | (0x01<<TXEN1)); } void uart_putchar(byte_t octet) { UDR1 = octet; while (!(UCSR1A & (0x01<<UDRE1))); } void uart_write(byte_t *octet, uint8_t len) { while (len--) { UDR1 = *octet++; while (!(UCSR1A & (0x01<<UDRE1))); } } void foo( qword_t srcAddr, qword_t dstAddr, byte_t state, byte_t routeOptions ) { uart_putchar(state); uart_write((byte_t *)(&srcAddr),8); uart_putchar(routeOptions); uart_write((byte_t *)(&dstAddr),8); } void main(void) { uart_init(); foo(0x1234ll,0x5678ll,0x00,0x01); while(1); } And the output will be: 00, 34,12,00,00,00,00,00,00, 01, 78,56,00,00,00,00,00,00 Compiling Procedure: avr-gcc -mmcu=atmega128 -g -Os -Wall -Wa,-adhlns=main.lst -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -ffreestanding -Wl,-Map=main.map -Wl,--cref main.c -o main.elf avr-objcopy -O ihex -R .eeprom test.elf test.hex avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O ihex test.elf test.eep avr-objdump -h -S test.elf > test.lss avr-nm -n test.elf > test.sym Programming with AVR Studio 4.11 build 401, JTAGICE mkII -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21834 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/21834] Error when passing unsigned long long as function arguments 2005-05-31 1:22 [Bug c/21834] New: Error when passing unsigned long long as function arguments ulyssesric at yahoo dot com dot tw 2005-05-31 3:35 ` [Bug target/21834] " pinskia at gcc dot gnu dot org 2005-05-31 3:38 ` ulyssesric at yahoo dot com dot tw @ 2005-05-31 3:41 ` ulyssesric at yahoo dot com dot tw 2005-06-19 14:02 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: ulyssesric at yahoo dot com dot tw @ 2005-05-31 3:41 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From ulyssesric at yahoo dot com dot tw 2005-05-31 03:38 ------- Sorry, typo. Compile Procedure: avr-gcc -mmcu=atmega128 -g -Os -Wall -Wa,-adhlns=test.lst -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -ffreestanding -Wl,-Map=test.map -Wl,--cref test.c -o test.elf avr-objcopy -O ihex -R .eeprom test.elf test.hex avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O ihex test.elf test.eep avr-objdump -h -S test.elf > test.lss avr-nm -n test.elf > test.sym -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21834 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/21834] Error when passing unsigned long long as function arguments 2005-05-31 1:22 [Bug c/21834] New: Error when passing unsigned long long as function arguments ulyssesric at yahoo dot com dot tw ` (2 preceding siblings ...) 2005-05-31 3:41 ` ulyssesric at yahoo dot com dot tw @ 2005-06-19 14:02 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-06-19 14:02 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- GCC host triplet|X86 (Linux, Win32) and | |PowerPC (Darwin) | Keywords| |ABI http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21834 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-06-19 14:02 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-05-31 1:22 [Bug c/21834] New: Error when passing unsigned long long as function arguments ulyssesric at yahoo dot com dot tw 2005-05-31 3:35 ` [Bug target/21834] " pinskia at gcc dot gnu dot org 2005-05-31 3:38 ` ulyssesric at yahoo dot com dot tw 2005-05-31 3:41 ` ulyssesric at yahoo dot com dot tw 2005-06-19 14:02 ` pinskia at gcc dot gnu dot org
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