The current implementation of the ARM semi-hosting SYS_HEAPINFO
system call assumes that the base address of RAM for all ARM devices
is 0x0. This isn't true for ARMv7-M devices, which uses a base of
0x20000000 for SRAM.
Signed-off-by: Meador Inge <mead...@codesourcery.com>
---
target-arm/arm-semi.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/target-arm/arm-semi.c b/target-arm/arm-semi.c
index 73bde58..fd90794 100644
--- a/target-arm/arm-semi.c
+++ b/target-arm/arm-semi.c
@@ -486,7 +486,13 @@ uint32_t do_arm_semihosting(CPUARMState *env)
ptr[3] = tswap32(0); /* Stack limit. */
unlock_user(ptr, ARG(0), 16);
#else
- limit = ram_size;
+ /* For ARMv7-M use the base address of SRAM as specified by the
+ architecture. */
+ if (arm_feature(env, ARM_FEATURE_M)) {
+ limit = 0x20000000 + ram_size;
+ } else {
+ limit = ram_size;
+ }
if (!(ptr = lock_user(VERIFY_WRITE, ARG(0), 16, 0)))
/* FIXME - should this error code be -TARGET_EFAULT ? */
return (uint32_t)-1;
--
1.7.7.6
