ArmPlatformPkg/ArmRealViewEbPkg/Debugger_scripts/EfiFuncs.inc
error=abort
// NOTE: THIS MAY NEED TO BE ADJUSTED
// change to reflect the total amount of ram in your system
define /r GetMaxMem()
{
return 0x10000000; // 256 MB
}
.
define /r GetWord(Addr)
{
unsigned long data;
if( (Addr & 0x2) == 0 )
{
data = dword(Addr);
data = data & 0xffff;
//$printf "getword data is %x\n", data$;
return data;
}
else
{
data = dword(Addr & 0xfffffffc);
//data = data >> 16;
data = data / 0x10000;
//$printf "getword data is %x (1)\n", data$;
return data;
}
}
.
define /r ProcessPE32(imgstart)
unsigned long imgstart;
{
unsigned long filehdrstart;
unsigned long debugdirentryrva;
unsigned long debugtype;
unsigned long debugrva;
unsigned long dwarfsig;
unsigned long baseofcode;
unsigned long baseofdata;
unsigned long elfbase;
char *elfpath;
$printf "PE32 image found at %x",imgstart$;
//$printf "PE file hdr offset %x",dword(imgstart+0x3C)$;
// offset from dos hdr to PE file hdr
filehdrstart = imgstart + dword(imgstart+0x3C);
// offset to debug dir in PE hdrs
//$printf "debug dir is at %x",(filehdrstart+0xA8)$;
debugdirentryrva = dword(filehdrstart + 0xA8);
if(debugdirentryrva == 0)
{
$printf "no debug dir for image at %x",imgstart$;
return;
}
//$printf "debug dir entry rva is %x",debugdirentryrva$;
debugtype = dword(imgstart + debugdirentryrva + 0xc);
if( (debugtype != 0xdf) && (debugtype != 0x2) )
{
$printf "debug type is not dwarf for image at %x",imgstart$;
$printf "debug type is %x",debugtype$;
return;
}
debugrva = dword(imgstart + debugdirentryrva + 0x14);
dwarfsig = dword(imgstart + debugrva);
if(dwarfsig != 0x66727764)
{
$printf "dwarf debug signature not found for image at %x",imgstart$;
return;
}
elfpath = (char *)(imgstart + debugrva + 0xc);
baseofcode = imgstart + dword(filehdrstart + 0x28);
baseofdata = imgstart + dword(filehdrstart + 0x2c);
if( (baseofcode < baseofdata) && (baseofcode != 0) )
{
elfbase = baseofcode;
}
else
{
elfbase = baseofdata;
}
$printf "found path %s",elfpath$;
$fprintf 50, "load /ni /np /a %s &0x%x\n",elfpath,elfbase$;
}
.
define /r ProcessTE(imgstart)
unsigned long imgstart;
{
unsigned long strippedsize;
unsigned long debugdirentryrva;
unsigned long debugtype;
unsigned long debugrva;
unsigned long dwarfsig;
unsigned long elfbase;
char *elfpath;
$printf "TE image found at %x",imgstart$;
// determine pe header bytes removed to account for in rva references
//strippedsize = word(imgstart + 0x6);
//strippedsize = (dword(imgstart + 0x4) & 0xffff0000) >> 16;
strippedsize = (dword(imgstart + 0x4) & 0xffff0000) / 0x10000;
strippedsize = strippedsize - 0x28;
debugdirentryrva = dword(imgstart + 0x20);
if(debugdirentryrva == 0)
{
$printf "no debug dir for image at %x",imgstart$;
return;
}
debugdirentryrva = debugdirentryrva - strippedsize;
//$printf "debug dir entry rva is %x",debugdirentryrva$;
debugtype = dword(imgstart + debugdirentryrva + 0xc);
if( (debugtype != 0xdf) && (debugtype != 0x2) )
{
$printf "debug type is not dwarf for image at %x",imgstart$;
$printf "debug type is %x",debugtype$;
return;
}
debugrva = dword(imgstart + debugdirentryrva + 0x14);
debugrva = debugrva - strippedsize;
dwarfsig = dword(imgstart + debugrva);
if( (dwarfsig != 0x66727764) && (dwarfsig != 0x3031424e) )
{
$printf "dwarf debug signature not found for image at %x",imgstart$;
$printf "found %x", dwarfsig$;
return;
}
if( dwarfsig == 0x66727764 )
{
elfpath = (char *)(imgstart + debugrva + 0xc);
$printf "looking for elf path at 0x%x", elfpath$;
}
else
{
elfpath = (char *)(imgstart + debugrva + 0x10);
$printf "looking for elf path at 0x%x", elfpath$;
}
// elf base is baseofcode (we hope that for TE images it's not baseofdata)
elfbase = imgstart + dword(imgstart + 0xc) - strippedsize;
$printf "found path %s",elfpath$;
$fprintf 50, "load /ni /np /a %s &0x%x\n",elfpath,elfbase$;
}
.
define /r ProcessFvSection(secstart)
unsigned long secstart;
{
unsigned long sectionsize;
unsigned char sectiontype;
sectionsize = dword(secstart);
//sectiontype = (sectionsize & 0xff000000) >> 24;
sectiontype = (sectionsize & 0xff000000) / 0x1000000;
sectionsize = sectionsize & 0x00ffffff;
$printf "fv section at %x size %x type %x",secstart,sectionsize,sectiontype$;
if(sectiontype == 0x10) // PE32
{
ProcessPE32(secstart+0x4);
}
else if(sectiontype == 0x12) // TE
{
ProcessTE(secstart+0x4);
}
}
.
define /r ProcessFfsFile(ffsfilestart)
unsigned long ffsfilestart;
{
unsigned long ffsfilesize;
unsigned long ffsfiletype;
unsigned long secoffset;
unsigned long secsize;
//ffsfiletype = byte(ffsfilestart + 0x12);
ffsfilesize = dword(ffsfilestart + 0x14);
//ffsfiletype = (ffsfilesize & 0xff000000) >> 24;
ffsfiletype = (ffsfilesize & 0xff000000) / 0x1000000;
ffsfilesize = ffsfilesize & 0x00ffffff;
if(ffsfiletype == 0xff) return;
$printf "ffs file at %x size %x type %x",ffsfilestart,ffsfilesize,ffsfiletype$;
secoffset = ffsfilestart + 0x18;
// loop through sections in file
while(secoffset < (ffsfilestart + ffsfilesize))
{
// process fv section and increment section offset by size
secsize = dword(secoffset) & 0x00ffffff;
ProcessFvSection(secoffset);
secoffset = secoffset + secsize;
// align to next 4 byte boundary
if( (secoffset & 0x3) != 0 )
{
secoffset = secoffset + (0x4 - (secoffset & 0x3));
}
} // end section loop
}
.
define /r LoadPeiSec()
{
unsigned long fvbase;
unsigned long fvlen;
unsigned long fvsig;
unsigned long ffsoffset;
unsigned long ffsfilesize;
fvbase = FindFv();
$printf "fvbase %x",fvbase$;
// get fv signature field
fvsig = dword(fvbase + 0x28);
if(fvsig != 0x4856465F)
{
$printf "FV does not have proper signature, exiting"$;
return 0;
}
$printf "FV signature found"$;
$fopen 50, 'C:\loadfiles.inc'$;
fvlen = dword(fvbase + 0x20);
// first ffs file is after fv header, use headerlength field
//ffsoffset = (dword(fvbase + 0x30) & 0xffff0000) >> 16;
ffsoffset = (dword(fvbase + 0x30) & 0xffff0000) / 0x10000;
ffsoffset = fvbase + GetWord(fvbase + 0x30);
// loop through ffs files
while(ffsoffset < (fvbase+fvlen))
{
// process ffs file and increment by ffs file size field
ProcessFfsFile(ffsoffset);
ffsfilesize = (dword(ffsoffset + 0x14) & 0x00ffffff);
if(ffsfilesize == 0)
{
break;
}
ffsoffset = ffsoffset + ffsfilesize;
// align to next 8 byte boundary
if( (ffsoffset & 0x7) != 0 )
{
ffsoffset = ffsoffset + (0x8 - (ffsoffset & 0x7));
}
} // end fv ffs loop
$vclose 50$;
}
.
define /r FindSystemTable(TopOfRam)
unsigned long TopOfRam;
{
unsigned long offset;
$printf "FindSystemTable"$;
$printf "top of mem is %x",TopOfRam$;
offset = TopOfRam;
// align to highest 4MB boundary
offset = offset & 0xFFC00000;
// start at top and look on 4MB boundaries for system table ptr structure
while(offset > 0)
{
//$printf "checking %x",offset$;
//$printf "value is %x",dword(offset)$;
// low signature match
if(dword(offset) == 0x20494249)
{
// high signature match
if(dword(offset+4) == 0x54535953)
{
// less than 4GB?
if(dword(offset+0x0c) == 0)
{
// less than top of ram?
if(dword(offset+8) < TopOfRam)
{
return(dword(offset+8));
}
}
}
}
if(offset < 0x400000) break;
offset = offset - 0x400000;
}
return 0;
}
.
define /r ProcessImage(ImageBase)
unsigned long ImageBase;
{
$printf "ProcessImage %x", ImageBase$;
}
.
define /r FindDebugInfo(SystemTable)
unsigned long SystemTable;
{
unsigned long CfgTableEntries;
unsigned long ConfigTable;
unsigned long i;
unsigned long offset;
unsigned long dbghdr;
unsigned long dbgentries;
unsigned long dbgptr;
unsigned long dbginfo;
unsigned long loadedimg;
$printf "FindDebugInfo"$;
dbgentries = 0;
CfgTableEntries = dword(SystemTable + 0x40);
ConfigTable = dword(SystemTable + 0x44);
$printf "config table is at %x (%d entries)", ConfigTable, CfgTableEntries$;
// now search for debug info entry with guid 49152E77-1ADA-4764-B7A2-7AFEFED95E8B
// 0x49152E77 0x47641ADA 0xFE7AA2B7 0x8B5ED9FE
for(i=0; i<CfgTableEntries; i++)
{
offset = ConfigTable + (i*0x14);
if(dword(offset) == 0x49152E77)
{
if(dword(offset+4) == 0x47641ADA)
{
if(dword(offset+8) == 0xFE7AA2B7)
{
if(dword(offset+0xc) == 0x8B5ED9FE)
{
dbghdr = dword(offset+0x10);
dbgentries = dword(dbghdr + 4);
dbgptr = dword(dbghdr + 8);
}
}
}
}
}
if(dbgentries == 0)
{
$printf "no debug entries found"$;
return;
}
$printf "debug table at %x (%d entries)", dbgptr, dbgentries$;
for(i=0; i<dbgentries; i++)
{
dbginfo = dword(dbgptr + (i*4));
if(dbginfo != 0)
{
if(dword(dbginfo) == 1) // normal debug info type
{
loadedimg = dword(dbginfo + 4);
ProcessPE32(dword(loadedimg + 0x20));
}
}
}
}
.
define /r LoadDxe()
{
unsigned long maxmem;
unsigned long systbl;
$printf "LoadDxe"$;
$fopen 50, 'C:\loadfiles.inc'$;
maxmem = GetMaxMem();
systbl = FindSystemTable(maxmem);
if(systbl != 0)
{
$printf "found system table at %x",systbl$;
FindDebugInfo(systbl);
}
$vclose 50$;
}
.
define /r LoadRuntimeDxe()
{
unsigned long maxmem;
unsigned long SystemTable;
unsigned long CfgTableEntries;
unsigned long ConfigTable;
unsigned long i;
unsigned long offset;
unsigned long numentries;
unsigned long RuntimeDebugInfo;
unsigned long DebugInfoOffset;
unsigned long imgbase;
$printf "LoadRuntimeDxe"$;
$fopen 50, 'C:\loadfiles.inc'$;
RuntimeDebugInfo = 0x80000010;
if(RuntimeDebugInfo != 0)
{
numentries = dword(RuntimeDebugInfo);
$printf "runtime debug info is at %x (%d entries)", RuntimeDebugInfo, numentries$;
DebugInfoOffset = RuntimeDebugInfo + 0x4;
for(i=0; i<numentries; i++)
{
imgbase = dword(DebugInfoOffset);
if(imgbase != 0)
{
$printf "found image at %x",imgbase$;
ProcessPE32(imgbase);
}
DebugInfoOffset = DebugInfoOffset + 0x4;
}
}
$vclose 50$;
}
.