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[PATCH 15/18] sim: or1k: Implement register store/fetch
- From: Stafford Horne <shorne at gmail dot com>
- To: gdb-patches at sourceware dot org
- Cc: openrisc at lists dot librecores dot org, Stafford Horne <shorne at gmail dot com>
- Date: Thu, 24 Nov 2016 07:14:29 +0900
- Subject: [PATCH 15/18] sim: or1k: Implement register store/fetch
- Authentication-results: sourceware.org; auth=none
- References: <1479939272-1754-1-git-send-email-shorne@gmail.com>
There was a comment questioning the use of these. But as soon
as I run any basic test gdb complains that these are not implemented.
More tests and basic run and execute work now.
---
sim/or1k/or1k-sim.h | 2 +-
sim/or1k/or1k.c | 31 ++++++++++++++++++++++++++++---
2 files changed, 29 insertions(+), 4 deletions(-)
diff --git a/sim/or1k/or1k-sim.h b/sim/or1k/or1k-sim.h
index 9e1754f..7213caa 100644
--- a/sim/or1k/or1k-sim.h
+++ b/sim/or1k/or1k-sim.h
@@ -4,7 +4,7 @@
#include "symcat.h"
/* GDB register numbers. */
-#define PC_REGNUM 16
+#define PC_REGNUM 33
/* Misc. profile data. */
typedef struct {
diff --git a/sim/or1k/or1k.c b/sim/or1k/or1k.c
index 98225ab..565a018 100644
--- a/sim/or1k/or1k.c
+++ b/sim/or1k/or1k.c
@@ -9,27 +9,52 @@
#include "sim-main.h"
#include "symcat.h"
#include "cgen-ops.h"
+#include "cgen-mem.h"
+#include "cpuall.h"
#include <string.h>
-/* not sure what the point of these is */
int XCONCAT2(WANT_CPU,_fetch_register) (sim_cpu *current_cpu, int rn, unsigned char *buf, int len)
{
- return -1;
+ if (rn < 32)
+ SETTWI (buf, XCONCAT2(WANT_CPU,_h_gpr_get) (current_cpu, rn));
+ else
+ switch (rn)
+ {
+ case PC_REGNUM :
+ SETTWI (buf, XCONCAT2(WANT_CPU,_h_pc_get) (current_cpu));
+ break;
+ default :
+ return 0;
+ }
+ return sizeof(WI); /* WI from arch.h */
}
int XCONCAT2(WANT_CPU,_store_register) (sim_cpu *current_cpu, int rn, unsigned char *buf, int len)
{
- return -1;
+ if (rn < 32)
+ XCONCAT2(WANT_CPU,_h_gpr_set) (current_cpu, rn, GETTWI (buf));
+ else
+ switch (rn)
+ {
+ case PC_REGNUM :
+ XCONCAT2(WANT_CPU,_h_pc_set) (current_cpu, GETTWI (buf));
+ break;
+ default :
+ return 0;
+ }
+ return sizeof(WI); /* WI from arch.h */
}
#ifdef WANT_CPU_OR1K32BF
int or1k32bf_model_or1200_u_exec (sim_cpu * UNUSED current_cpu, const IDESC * UNUSED idesc, int unit_num, int referenced)
{
+ return -1;
}
int or1k32bf_model_or1200nd_u_exec (sim_cpu * UNUSED current_cpu, const IDESC * UNUSED idesc, int unit_num, int referenced)
{
+ return -1;
}
void or1k32bf_model_insn_before (sim_cpu * UNUSED current_cpu, int UNUSED first_p)
--
2.7.4