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[binutils-gdb] sim: ft32: correctly simulate PM write port
- From: Michael Frysinger <vapier at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 30 Sep 2015 03:37:10 -0000
- Subject: [binutils-gdb] sim: ft32: correctly simulate PM write port
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=71c34ca7a0f54c8c8ad39b72ea1badf9f9a1ade7
commit 71c34ca7a0f54c8c8ad39b72ea1badf9f9a1ade7
Author: James Bowman <james.bowman@ftdichip.com>
Date: Mon Sep 28 23:49:36 2015 +0000
sim: ft32: correctly simulate PM write port
The FT32 simulator was not correctly simulating the behavior of the
program memory (PM) write port. When it is locked, writes to the
data register do nothing.
Diff:
---
sim/ft32/ChangeLog | 4 ++++
sim/ft32/interp.c | 8 ++++++--
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/sim/ft32/ChangeLog b/sim/ft32/ChangeLog
index 29f661f..47218b4 100644
--- a/sim/ft32/ChangeLog
+++ b/sim/ft32/ChangeLog
@@ -1,3 +1,7 @@
+2015-09-29 James Bowman <james.bowman@ftdichip.com>
+
+ * interp.c (cpu_mem_write): Do no write PM when locked.
+
2015-09-22 James Bowman <james.bowman@ftdichip.com>
* ft32/interp.c (cpu_mem_read): Call getchar when ea is 0x10000.
diff --git a/sim/ft32/interp.c b/sim/ft32/interp.c
index a20907c..c769ff7 100644
--- a/sim/ft32/interp.c
+++ b/sim/ft32/interp.c
@@ -205,8 +205,12 @@ static void cpu_mem_write (SIM_DESC sd, uint32_t dw, uint32_t ea, uint32_t d)
cpu->state.pm_addr = d;
break;
case 0x1fc88:
- /* Write to PM */
- ft32_write_item (sd, dw, cpu->state.pm_addr, d);
+ if (cpu->state.pm_unlock)
+ {
+ /* Write to PM. */
+ ft32_write_item (sd, dw, cpu->state.pm_addr, d);
+ cpu->state.pm_addr += 4;
+ }
break;
case 0x1fffc:
/* Normal exit. */