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LibrePilot/flight/Project/OpenOCD/0001-armv7m-remove-dummy-FP-regs-for-new-gdb.patch

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From 07081d82193928ffd0b45df446546f0a41373db7 Mon Sep 17 00:00:00 2001
From: Stacey Sheldon <stac@solidgoldbomb.org>
Date: Thu, 2 Feb 2012 22:42:03 -0500
Subject: [PATCH 1/2] armv7m: remove dummy FP regs for new gdb
---
src/rtos/rtos_standard_stackings.c | 7 +++++++
src/target/armv7m.c | 16 ++++++++++++++++
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/src/rtos/rtos_standard_stackings.c b/src/rtos/rtos_standard_stackings.c
index 30d9cd9..6ea6565 100644
--- a/src/rtos/rtos_standard_stackings.c
+++ b/src/rtos/rtos_standard_stackings.c
@@ -41,6 +41,7 @@ static const struct stack_register_offset rtos_standard_Cortex_M3_stack_offsets[
{ -2, 32 }, /* sp */
{ 0x34, 32 }, /* lr */
{ 0x38, 32 }, /* pc */
+#ifdef USE_DUMMY_FP_REGS
{ -1, 96 }, /* FPA1 */
{ -1, 96 }, /* FPA2 */
{ -1, 96 }, /* FPA3 */
@@ -50,13 +51,19 @@ static const struct stack_register_offset rtos_standard_Cortex_M3_stack_offsets[
{ -1, 96 }, /* FPA7 */
{ -1, 96 }, /* FPA8 */
{ -1, 32 }, /* FPS */
+#endif
{ 0x3c, 32 }, /* xPSR */
};
+
const struct rtos_register_stacking rtos_standard_Cortex_M3_stacking = {
0x40, /* stack_registers_size */
-1, /* stack_growth_direction */
+#ifdef USE_DUMMY_FP_REGS
26, /* num_output_registers */
+#else
+ 17,
+#endif
8, /* stack_alignment */
rtos_standard_Cortex_M3_stack_offsets /* register_offsets */
};
diff --git a/src/target/armv7m.c b/src/target/armv7m.c
index 258653e..50b26d4 100644
--- a/src/target/armv7m.c
+++ b/src/target/armv7m.c
@@ -267,6 +267,7 @@ int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int
struct armv7m_common *armv7m = target_to_armv7m(target);
int i;
+#ifdef USE_DUMMY_FP_REGS
*reg_list_size = 26;
*reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
@@ -295,6 +296,21 @@ int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int
(*reg_list)[25] = &armv7m->core_cache->reg_list[ARMV7M_xPSR];
#endif
+#else
+ *reg_list_size = 17;
+ *reg_list = malloc(sizeof(struct reg*) * (*reg_list_size));
+
+ /*
+ * GDB register packet format for ARM:
+ * - the first 16 registers are r0..r15
+ * - followed by xPSR
+ */
+ for (i = 0; i < *reg_list_size; i++)
+ {
+ (*reg_list)[i] = &armv7m->core_cache->reg_list[i];
+ }
+#endif
+
return ERROR_OK;
}
--
1.7.5.4