diff options
Diffstat (limited to 'target-lm32/helper.c')
| -rw-r--r-- | target-lm32/helper.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/target-lm32/helper.c b/target-lm32/helper.c index 783aa16a45..1bca1961af 100644 --- a/target-lm32/helper.c +++ b/target-lm32/helper.c @@ -1,7 +1,7 @@ /* * LatticeMico32 helper routines. * - * Copyright (c) 2010 Michael Walle <michael@walle.cc> + * Copyright (c) 2010-2014 Michael Walle <michael@walle.cc> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -19,6 +19,7 @@ #include "cpu.h" #include "qemu/host-utils.h" +#include "sysemu/sysemu.h" int lm32_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, int mmu_idx) @@ -159,11 +160,20 @@ void lm32_cpu_do_interrupt(CPUState *cs) "exception at pc=%x type=%x\n", env->pc, cs->exception_index); switch (cs->exception_index) { + case EXCP_SYSTEMCALL: + if (unlikely(semihosting_enabled)) { + /* do_semicall() returns true if call was handled. Otherwise + * do the normal exception handling. */ + if (lm32_cpu_do_semihosting(cs)) { + env->pc += 4; + break; + } + } + /* fall through */ case EXCP_INSN_BUS_ERROR: case EXCP_DATA_BUS_ERROR: case EXCP_DIVIDE_BY_ZERO: case EXCP_IRQ: - case EXCP_SYSTEMCALL: /* non-debug exceptions */ env->regs[R_EA] = env->pc; env->ie |= (env->ie & IE_IE) ? IE_EIE : 0; |