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fix ldscript emission
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makslevental committed Aug 27, 2024
1 parent 3e966c9 commit ccb8865
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Showing 2 changed files with 27 additions and 31 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -23,43 +23,15 @@ static void writeLDScriptMap(raw_ostream &output, BufferOp buf, int offset) {
output << ". += 0x" << llvm::utohexstr(numBytes) << ";\n";
}

///// ld.script format:
//
// MEMORY
// {
// program (RX) : ORIGIN = 0, LENGTH = 0x0020000
// data (!RX) : ORIGIN = 0x20000, LENGTH = 0x0020000
// }
// ENTRY(_main_init)
// INPUT(something.o)
// SECTIONS
// {
// . = 0x0;
// .text : {
// // the __start symbol from crt0.o has to come at address zero.
// *crt0.o(.text)
// . = 0x200;
// *(.text)
// } > program
// .data : { *(.data) } > data
// . = 0x20000;
// _sp_start_value_DM_stack = .;
// . = 0x24000;
// a = .;
// . += 1024;
// .bss : { *(.bss) } > data
// }
LogicalResult mlir::iree_compiler::AMDAIE::AIETranslateToLdScript(
DeviceOp deviceOp, raw_ostream &output, int tileCol, int tileRow) {
DenseMap<TileLoc, Operation *> tiles;
DenseMap<Operation *, SmallVector<BufferOp, 4>> buffers;


collectTiles(deviceOp, tiles);
::collectBuffers(deviceOp, buffers);

AMDAIEDeviceModel deviceModel =
getDeviceModel(static_cast<AMDAIEDevice>(deviceOp.getDevice()));
AMDAIEDeviceModel deviceModel = getDeviceModel(deviceOp.getDevice());
for (auto tile : deviceOp.getOps<TileOp>())
if (tile.getCol() == tileCol && tile.getRow() == tileRow) {
TileLoc srcCoord = {tile.getCol(), tile.getRow()};
Expand Down Expand Up @@ -95,9 +67,33 @@ SECTIONS
*(.data*);
*(.rodata*)
} > data
.comment : {
*(.comment*)
}
.symtab : {
*(.symtab)
}
.shstrtab : {
*(.shstrtab)
}
.strtab : {
*(.strtab)
}
.tctmemtab : {
*(.tctmemtab)
}
.rtstab : {
*(.rtstab)
}
.eoltab : {
*(.eoltab)
}
.chesstypeannotationtab : {
*(.chesstypeannotationtab)
}
)THESCRIPT";
auto doBuffer = [&](std::optional<TileLoc> tile, int offset,
const std::string& dir) {
const std::string &dir) {
if (tile) {
if (tiles.count({tile->col, tile->row}))
for (auto buf : buffers[tiles[{tile->col, tile->row}]])
Expand Down Expand Up @@ -132,7 +128,6 @@ SECTIONS
deviceModel.getMemEastBaseAddress(), std::string("east"));

output << " .bss : { *(.bss) } > data\n";
output << " .bss.DMb.4 : { *(.bss.DMb.4) } > data\n";
output << "}\n";
if (auto coreOp = getCoreOp(tile)) {
output << "PROVIDE(main = core_" << std::to_string(tile.getCol()) << "_"
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Original file line number Diff line number Diff line change
Expand Up @@ -614,6 +614,7 @@ static LogicalResult generateCoreElfFiles(
}
flags.emplace_back("--target=" + targetLower + "-none-unknown-elf");
flags.emplace_back("-Wl,--gc-sections");
flags.emplace_back("-Wl,--orphan-handling=error");
flags.emplace_back("-Wl,-T," + ldscriptPath.string());
flags.emplace_back("-o");
flags.emplace_back(elfFile.string());
Expand Down

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