Thanks a lot Scott for replying.

The attribute section is working, but one problem: the compiler is automatically assigning address for the section and ld returns error is I try to assign the address for this section in a linker script:

Following is the disassembly when I don't specify an address for the same section name in the linker script:
Disassembly of section .l2_scratch:

004ae820 <.l2_scratch>:
4ae820:       3c1c0fb9        lui     gp,0xfb9
4ae824:       279c1d90        addiu   gp,gp,7568
4ae828:       0399e021        addu    gp,gp,t9
4ae82c:       27bdffd0        addiu   sp,sp,-48
4ae830:       afbf0028        sw      ra,40(sp)
4ae834:       afbe0024        sw      s8,36(sp)
4ae838:       ----------      ----      ---------

And the section shows:
Idx Name          Size      VMA       LMA       File off Algn
0 .reginfo      00000018 00400094 00400094 00000094 2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA, LINK_ONCE_SAME_SIZE
1 .init         00000088 004000ac 004000ac 000000ac 2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
2 .text         000ae6e0 00400140 00400140 00000140 2**4
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
3 .l2_scratch   000004f0 004ae820 004ae820 000ae820 2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
4 -----      --------------------------------------------------------

Now if I make the following entry in the linker script,
/* define L2 scratch here */
. = 0x9FC16800;
.l2_scratch         : { *(.l2_scratch) }

it says "collect2: ld returned 1 exit status".

Is there any way I can assign address for the section used in attribute?

Thanks and regards,
Sanal

Scott Wood wrote:

On Thu, May 08, 2008 at 05:06:46PM +0530, Sanal Kumar V K wrote:

A small part of the code needs to run from the on-chip "L2 scratch" for
getting optimum performance. I would really appreciate if some could
give me some pointers regarding the following questions:

1. Is #pragma section supported by gcc.
The compiler prints this warning "ignoring #pragma section" and the
pragma is ignored indicating that it is not supported. Is there any way
I can get the pragma working for gcc or any alternative?


__attribute__((section("section name")))

-Scott