It definitely gets blocked by something: if I leave the the trap table in the .text section, the write silently fails. If I move the trap table to the .data section, the write succeeds. If I move the trap table over to .rodata, the write fails again. What are you looking at that suggests the whole sparc bios is loaded read/write?
On 2/16/07, Paul Brook <[EMAIL PROTECTED]> wrote:
On Friday 16 February 2007 16:55, Peter wrote: > While working on getting SunOS to boot under qemu, I ran into a very > odd bug, and I'm not sure whose fault it is. > > The SunOS bootloader tries to install trap 0 by writing to the trap > table. The trap table is in the .text (read-only) section of the > OpenBIOS ROM. I don't know about sparc, but it's normal for writes to ROM to be ignored. However by my reading the sparc bios is loaded into RAM anyway, so it shouldn't matter. Paul
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