* gas-940814 ld bugs
[not found] <9403150407.AA06088@cujo.cygnus.com>
@ 1994-08-14 22:33 ` H.J. Lu
1994-08-15 8:35 ` Ian Lance Taylor
0 siblings, 1 reply; 2+ messages in thread
From: H.J. Lu @ 1994-08-14 22:33 UTC (permalink / raw)
To: Ken Raeburn; +Cc: gas2
gas-940814 configured for i486-linux. If I do
ld -x -Ttext 5ffff000 -Tdata 6008e000 foo.o
the size of the output file is ridiculous. I got
-rwxr-xr-x 1 hjl isl 8367 Aug 15 01:54 a.out
text data bss dec hex filename
4064 4096 0 8160 1fe0 a.out
But I am looking for about 0x8e000 bytes.
H.J.
-------foo.c----
int bar= 100;
void
foo ()
{
return;
}
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: gas-940814 ld bugs
1994-08-14 22:33 ` gas-940814 ld bugs H.J. Lu
@ 1994-08-15 8:35 ` Ian Lance Taylor
0 siblings, 0 replies; 2+ messages in thread
From: Ian Lance Taylor @ 1994-08-15 8:35 UTC (permalink / raw)
To: hjl; +Cc: raeburn, gas2
From: hjl@nynexst.com (H.J. Lu)
Date: Mon, 15 Aug 94 1:33:47 EDT
gas-940814 configured for i486-linux. If I do
ld -x -Ttext 5ffff000 -Tdata 6008e000 foo.o
the size of the output file is ridiculous. I got
-rwxr-xr-x 1 hjl isl 8367 Aug 15 01:54 a.out
text data bss dec hex filename
4064 4096 0 8160 1fe0 a.out
But I am looking for about 0x8e000 bytes.
When you use -Ttext and -Tdata, the linker will link the code as if
the .text and .data sections start at the given address. It will also
tell BFD to store the given VMA with the section. It will not insert
extra zero bytes.
The problem, of course, is that a.out has no way to store the starting
VMA of a section. This is one of several disadvantages of the a.out
format. The solution is to either use a different object file format,
or to modify the linker script along the lines of
.text 0x1020 {
. = 0x5ffff000
*(.text)
}
Ian
^ permalink raw reply [flat|nested] 2+ messages in thread
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1994-08-14 22:33 ` gas-940814 ld bugs H.J. Lu
1994-08-15 8:35 ` Ian Lance Taylor
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