From 699d246b1c7880d6817f06f31561026f9322ce49 Mon Sep 17 00:00:00 2001 From: mlu Date: Tue, 14 Apr 2009 16:33:52 +0000 Subject: [PATCH] Solve problem with single stepping. git-svn-id: svn://svn.berlios.de/openocd/trunk@1455 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- src/target/arm_simulator.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/src/target/arm_simulator.c b/src/target/arm_simulator.c index 217633e8..b21ea4a8 100644 --- a/src/target/arm_simulator.c +++ b/src/target/arm_simulator.c @@ -415,7 +415,12 @@ int arm_simulate_step(target_t *target, u32 *dry_run_pc) u8 carry_out; Rd = 0x0; - Rn = buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, instruction.info.data_proc.Rn).value, 0, 32); + /* ARM_MOV and ARM_MVN does not use Rn */ + if ((instruction.type != ARM_MOV) && (instruction.type != ARM_MVN)) + Rn = buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, instruction.info.data_proc.Rn).value, 0, 32); + else + Rn = 0; + shifter_operand = arm_shifter_operand(armv4_5, instruction.info.data_proc.variant, instruction.info.data_proc.shifter_operand, &carry_out); /* adjust Rn in case the PC is being read */ @@ -446,6 +451,8 @@ int arm_simulate_step(target_t *target, u32 *dry_run_pc) Rd = shifter_operand; else if (instruction.type == ARM_MVN) Rd = ~shifter_operand; + else + LOG_WARNING("unhandled instruction type"); if (dry_run_pc) { -- 2.39.5