| Message ID | 1438603279-12432-1-git-send-email-leon.alrae@imgtec.com |
|---|---|
| State | New |
| Headers | show |
On 2015-08-03 13:01, Leon Alrae wrote: > In semihosting mode the SDBBP 1 instructions should trigger UHI syscall, > but in QEMU this does not happen for recently added microMIPS R6. > Consequently bare metal microMIPS R6 programs supporting UHI will not run. > > Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> > --- > target-mips/translate.c | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-) Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/target-mips/translate.c b/target-mips/translate.c index d1de35a..e299643 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -13278,10 +13278,14 @@ static void gen_pool16c_r6_insn(DisasContext *ctx) break; case R6_SDBBP16: /* SDBBP16 */ - if (ctx->hflags & MIPS_HFLAG_SBRI) { - generate_exception(ctx, EXCP_RI); + if (is_uhi(extract32(ctx->opcode, 6, 4))) { + gen_helper_do_semihosting(cpu_env); } else { - generate_exception(ctx, EXCP_DBp); + if (ctx->hflags & MIPS_HFLAG_SBRI) { + generate_exception(ctx, EXCP_RI); + } else { + generate_exception(ctx, EXCP_DBp); + } } break; }
In semihosting mode the SDBBP 1 instructions should trigger UHI syscall, but in QEMU this does not happen for recently added microMIPS R6. Consequently bare metal microMIPS R6 programs supporting UHI will not run. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> --- target-mips/translate.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)