Lpc2000

Here's my compile command line:

gcc -c -mcpu=arm7tdmi -I. -gdwarf-2 -DREENTRANT_SYSCALLS_PROVIDED -
DROM_RUN -DGCC_ARM7 -I ./include -O3 -Wall -Wcast-align -Wimplicit -
Wwrite-strings -Wpointer-arith -Wswitch -Wreturn-type -Wunused -
Wshadow -Wa,-adhlns=lib/serial.lst -MD -MP -MF .dep/serial.o.d -
Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes  -
std=gnu99 lib/serial.c -o lib/serial.o

Guille


--- In lpc2000@yahoogroups.com, "David Hawkins" <dwh@o...> wrote:
>
> 
> Hello Guille,
> 
> Out of interest, what were the compiler switches used to get
> your output below? (I have only started using GCC myself).
> 
> Dave
> 
> 
> > > void Uart0Service(void) __attribute__ ((interrupt("IRQ"));
> > > 
> > > void Uart0Service(void)
> > > {
> > > 18f0:  e24ee004  sub    lr, lr, #4 ; 0x4
> > > 18f4:  e92d500f  stmdb  sp!, {r0, r1, r2, r3, ip, lr}
> > > unsigned char temp_id;
> > > temp_id = U0IIR;
> > >     18f8:  e3a03903   mov  r3, #49152   ; 0xc000
> > >     18fc:  e283328e   add  r3, r3, #-536870904  ; 0xe0000008
> > >     1900:  e5d32000   ldrb  r2, [r3]
> > > switch(temp_id & IDENT_MASK) {
> > >     1904:  e202200e   and  r2, r2, #14  ; 0xe
> > > case DATA_AVAILABLE:
> > > case DATA_TIMEOUT:
> > > receive();
> > > break;
> > > case TRANSMIT_AVAILABLE:
> > > transmit();
> > > default:
> > > break;
> > > }
> > >     /* case DATA_AVAILABLE */
> > >     1908:  e3520004   cmp  r2, #4       ; 0x4
> > >     190c:  0a000005   beq  1928 <Uart0Service+0x38>
> > > 
> > >     /* case DATA_TIMEOUT */
> > >     1910:  e352000c   cmp  r2, #12      ; 0xc
> > >     1914:  0a000003   beq  1928 <Uart0Service+0x38>
> > > 
> > >     /* case [not] TRANSMIT_AVAILABLE */
> > >     1918:  e3520002   cmp  r2, #2       ; 0x2
> > >     191c:  18fd900f   ldmneia  sp!, {r0, r1, r2, r3, ip, pc}^
> > > 
> > >     1920:  ebfffa69   bl  2cc <transmit>
> > >     1924:  e8fd900f   ldmia  sp!, {r0, r1, r2, r3, ip, pc}^
> > > 
> > >     1928:  ebfffa75   bl  304 <receive>
> > >     192c:  e8fd900f   ldmia  sp!, {r0, r1, r2, r3, ip, pc}^
> > > }
> > > 
> > > Shouldn't this code also save spsr? Or perhaps this is only 
needed 
> > > for reentrant IRQs?
> > > 
> > > Guille
> > >
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >  
> > Yahoo! Groups Links
> > 
> > 
> > 
> >  
> >
>