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Recognize new moxie prologues

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This commit is contained in:
Anthony Green 2009-09-10 21:12:25 +00:00
parent 0d772ac9df
commit ce0bf48891
2 changed files with 33 additions and 14 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2009-09-10 Anthony Green <green@moxielogic.com>
* moxie-tdep.c (moxie_analyze_prologue): Recognize new prologue
sequences.
2009-09-10 Michael Snyder <msnyder@vmware.com>
* remote.c (PACKET_bc, PACKET_bs): New enums.

42
gdb/moxie-tdep.c
View file

@ -174,23 +174,37 @@ moxie_analyze_prologue (CORE_ADDR start_addr, CORE_ADDR end_addr,
cache->saved_regs[regnum] = cache->framesize;
next_addr += 2;
}
}
/* Optional stack allocation for args and local vars <= 4
byte. */
else if (inst == 0x01f0) /* ldi.l $r12, X */
inst = read_memory_unsigned_integer (next_addr, 2, byte_order);
/* Optional stack allocation for args and local vars <= 4
byte. */
if (inst == 0x0170) /* ldi.l $r5, X */
{
offset = read_memory_integer (next_addr + 2, 4, byte_order);
inst2 = read_memory_unsigned_integer (next_addr + 6, 2, byte_order);
if (inst2 == 0x0517) /* add.l $sp, $r5 */
{
offset = read_memory_integer (next_addr + 2, 4, byte_order);
inst2 = read_memory_unsigned_integer (next_addr + 6, 2, byte_order);
if (inst2 == 0x051f) /* add.l $sp, $r12 */
{
cache->framesize += offset;
}
return (next_addr + 8);
cache->framesize += offset;
}
return (next_addr + 8);
}
else if ((inst & 0xff00) == 0x91) /* dec $sp, X */
{
cache->framesize += (inst & 0x00ff);
next_addr += 2;
while (next_addr < end_addr)
{
inst = read_memory_unsigned_integer (next_addr, 2, byte_order);
if ((inst & 0xff00) != 0x91) /* no more dec $sp, X */
break;
cache->framesize += (inst & 0x00ff);
next_addr += 2;
}
else /* This is not a prologue instruction. */
break;
}
return next_addr;