Software Tools

We have developed a complete C compiler for TORCH. Originally it used the SUIF compiler to generate an intermediate representation which was then used by the instruction scheduler. This had some nice features, like being able to schedule for infinite number of registers. However, since SUIF is not very wide spreadt (yet!) we have moved to using MIPS C compiler to generate an assembly file. This is then processed using the TORCH tools. You can get a copy of the entire software toolset. [2144kB] The TORCH compiler Tcc can automatically generate statistics files to evaulate the compiler, and the simulators to emulate TORCH object code on a DECstation. Please see Ttrace and Tsim.

Description

Below is a short description of each of the programs in the distribution.
masm
Assembles a MIPS assembly language program into MIPS machine instructions. It also collects relocation information to aid in the building of a real .o file. One should think of masm as the first pass of a full assembler. [38kB]
twine
TORCH instruction scheduler. It is capable of scheduling for a boosting architecture and for a non-excepting-instruction architecture. [91kB]
readm
Translates MIPS-assembly-from-SUIF binary to an ASCII file of MIPS assembly instructions. [3kB]
tas
Produce a relocatable TORCH object file from the output of masm or twine. The object file is in MIPS COFF format. [49kB]
lt
TORCH link editor. Does some pre-processing of symbols and the calls the Ultrix linker (ld) to build the final object file. [14kB]
tcc
TORCH compiler. Compiles C and assembly source files into TORCH object files. It can also produce statistics files for evaluating the compiler, and the simulators for emulating TORCH object code on a DECstation. [63kB]
libraries
This is a set of common libraries that are used by most of the Software Tools. Some of the libraraies are old SUIF libraries. All the bugs are ours, not theirs. You will need them to re-compile the binaries. [128kB]
loadcore
Will read in the text and data segments of a TORCH object file, and write them to output files in Verilog format. [9kB]

The TORCH software tools were developed by Michael D. Smith, Phil Lacroute, Monica Lam and Mark Horowitz .

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