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This patch introduces the basics of an instruction-simulator for eBPF.
The simulator is based on CGEN.
gdb/ChangeLog:
2020-08-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* configure.tgt: Set gdb_sim for bpf-*-* targets.
sim/ChangeLog:
2020-08-04 Jose E. Marchesi <jose.marchesi@oracle.com>
David Faust <david.faust@oracle.com>
* configure.tgt (sim_arch): Add entry for bpf-*-*.
* configure: Regenerate.
* MAINTAINERS: Add maintainer for the BPF simulator.
* bpf/Makefile.in: New file.
* bpf/bpf-helpers.c: Likewise.
* bpf/bpf-helpers.def: Likewise.
* bpf/bpf-helpers.h: Likewise.
* bpf/bpf-sim.h: Likewise.
* bpf/bpf.c: Likewise.
* bpf/config.in: Likewise.
* bpf/configure.ac: Likewise.
* bpf/decode.h: Likewise.
* bpf/eng.h: Likewise.
* bpf/mloop.in: Likewise.
* bpf/sim-if.c: Likewise.
* bpf/sim-main.h: Likewise.
* bpf/traps.c: Likewise.
* bpf/configure: Generate.
* bpf/aclocal.m4: Likewise.
sim/testsuite/ChangeLog:
2020-08-04 David Faust <david.faust@oracle.com>
Jose E. Marchesi <jose.marchesi@oracle.com>
* configure: Regenerate.
* sim/bpf/allinsn.exp: New file.
* sim/bpf/alu.s: Likewise.
* sim/bpf/alu32.s: Likewise.
* sim/bpf/endbe.s: Likewise.
* sim/bpf/endle.s: Likewise.
* sim/bpf/jmp.s: Likewise.
* sim/bpf/jmp32.s: Likewise.
* sim/bpf/ldabs.s: Likewise.
* sim/bpf/mem.s: Likewise.
* sim/bpf/mov.s: Likewise.
* sim/bpf/testutils.inc: Likewise.
* sim/bpf/xadd.s: Likewise.
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