From 1ddeaa5d4277af76679d02bc59b08657c357aee6 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 6 Sep 2011 03:55:47 +0400 Subject: target-xtensa: implement SIMCALL Tensilica iss provides support for applications running in freestanding environment through SIMCALL command. It is used by Tensilica libc to access argc/argv, for file I/O, etc. Note that simcalls that accept buffer addresses expect virtual addresses. Signed-off-by: Max Filippov Signed-off-by: Blue Swirl --- target-xtensa/translate.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'target-xtensa/translate.c') diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index dd84dfcac5..1598e27440 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -35,6 +35,7 @@ #include "disas.h" #include "tcg-op.h" #include "qemu-log.h" +#include "sysemu.h" #include "helpers.h" #define GEN_HELPER 1 @@ -726,7 +727,13 @@ static void disas_xtensa_insn(DisasContext *dc) break; case 1: /*SIMCALL*/ - TBD(); + if (semihosting_enabled) { + gen_check_privilege(dc); + gen_helper_simcall(cpu_env); + } else { + qemu_log("SIMCALL but semihosting is disabled\n"); + gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE); + } break; default: -- cgit v1.2.3