Difference between revisions of "Supported Architectures"
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| − | gem5 is a flexible architecture simulator that supports a number of ISAs and operating systems for both full-system simulation (booting an entire operating system) and syscall emulation (running one or more applications by emulating syscalls). | + | gem5 is a flexible architecture simulator that supports a number of ISAs and operating systems for both full-system simulation (booting an entire operating system) and syscall emulation (running one or more applications by emulating syscalls). An overview of the architecture support is given in the table below. |
| + | |||
| + | {| class="wikitable" | ||
| + | ! ISA | ||
| + | ! Maintainer | ||
| + | ! Level of ISA support | ||
| + | ! OS support | ||
| + | ! Test coverage | ||
| + | ! Tool chain availability | ||
| + | ! Linux kernel availability | ||
| + | |- | ||
| + | | ALPHA | ||
| + | | None | ||
| + | | High | ||
| + | | Linux | ||
| + | | Medium | ||
| + | | Low | ||
| + | | Low | ||
| + | |- | ||
| + | | ARM | ||
| + | | Andreas Sandberg | ||
| + | | High | ||
| + | | Linux, BSD, Android | ||
| + | | High | ||
| + | | High | ||
| + | | High | ||
| + | |- | ||
| + | | MIPS | ||
| + | | None | ||
| + | | Low | ||
| + | | None | ||
| + | | Low | ||
| + | | Medium | ||
| + | | Medium | ||
| + | |- | ||
| + | | POWER | ||
| + | | None | ||
| + | | Low | ||
| + | | None | ||
| + | | Low | ||
| + | | Medium | ||
| + | | Medium | ||
| + | |- | ||
| + | | RISC-V | ||
| + | | Alec Roelke | ||
| + | | Medium | ||
| + | | None | ||
| + | | Low | ||
| + | | Low | ||
| + | | Low | ||
| + | |- | ||
| + | | SPARC | ||
| + | | None | ||
| + | | Low | ||
| + | | None | ||
| + | | Low | ||
| + | | Low | ||
| + | | Low | ||
| + | |- | ||
| + | | X86 | ||
| + | | Tony Gutierrez | ||
| + | | Medium | ||
| + | | Linux, BSD | ||
| + | | Medium | ||
| + | | High | ||
| + | | High | ||
| + | |} | ||
Revision as of 03:27, 13 April 2017
gem5 is a flexible architecture simulator that supports a number of ISAs and operating systems for both full-system simulation (booting an entire operating system) and syscall emulation (running one or more applications by emulating syscalls). An overview of the architecture support is given in the table below.
| ISA | Maintainer | Level of ISA support | OS support | Test coverage | Tool chain availability | Linux kernel availability |
|---|---|---|---|---|---|---|
| ALPHA | None | High | Linux | Medium | Low | Low |
| ARM | Andreas Sandberg | High | Linux, BSD, Android | High | High | High |
| MIPS | None | Low | None | Low | Medium | Medium |
| POWER | None | Low | None | Low | Medium | Medium |
| RISC-V | Alec Roelke | Medium | None | Low | Low | Low |
| SPARC | None | Low | None | Low | Low | Low |
| X86 | Tony Gutierrez | Medium | Linux, BSD | Medium | High | High |
Syscall Emulation
Modifying gem5 to support additional ISAs in syscall emulation mode is far easier than for full-system simulation. As such all new architectures to-date have used syscall emulation as a stepping stone to full-system simulation.
- ALPHA -- Linux
- SPARC -- Linux, Solaris
- MIPS -- Linux
- ARM -- Linux
- x86 -- Linux
- Power -- Linux
- RISC-V -- Linux
Note: Newer versions of Solaris do not support static linking so Solaris syscall emulation isn't used. Implementation of a dynamic linker in gem5 (or gem5 executing ld.so) is possible, but it hasn't been implemented.
Full-System Simulation
- ALPHA -- Linux, FreeBSD
- ARM -- Bare metal, FreeBSD and Linux support with both detailed, minor (in-order) and simple CPU models for AArch32 or AArch64 (32-bit or 64-bit) ARM.
- SPARC -- Solaris
- MIPS -- Linux and bare metal support started, lots of work needed
- x86/64 -- In progress, actively being worked on
