I believe there is a mistake in the file \boot_loader\bl_startup_ewarm.S that is part of the TivaWare C Series 2.1.2.111 (the same error is in version 2.1.0.12573
//*****************************************************************************
//
// Allocate storage for the stack.
//
//*****************************************************************************
export g_pulStack
g_pulStack ds8 STACK_SIZE * 4
//*****************************************************************************
//
// This portion of the file goes into the vector section.
//
//*****************************************************************************
rseg INTVEC:CONST(2)
//*****************************************************************************
//
// The minimal vector table for a Cortex-M3 processor.
//
//*****************************************************************************
export __vector_table
__vector_table
dcd g_pulStack + (STACK_SIZE * 4) // Offset 00: Initial stack pointer
The line
dcd g_pulStack + (STACK_SIZE * 4) // Offset 00: Initial stack pointer
should read
dcd g_pulStack + ((STACK_SIZE-1) * 4) // Offset 00: Initial stack pointer
The base of the stack starts one word beyond the reserved stack space.
