ChibiOS 2.6.8, until I can figure out where to get it from git.

firmware/chibios/os/ports/IAR/ARMCMx/cstartup.s

@@ -0,0 +1,75 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011,2012,2013 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+                                      ---
+
+    A special exception to the GPL can be applied should you wish to distribute
+    a combined work that includes ChibiOS/RT, without being obliged to provide
+    the source code for any proprietary components. See the file exception.txt
+    for full details of how and when the exception can be applied.
+*/
+
+        MODULE  ?cstartup
+
+CONTROL_MODE_PRIVILEGED SET 0
+CONTROL_MODE_UNPRIVILEGED SET 1
+CONTROL_USE_MSP SET 0
+CONTROL_USE_PSP SET 2
+
+        AAPCS INTERWORK, VFP_COMPATIBLE, ROPI
+        PRESERVE8
+
+        SECTION .intvec:CODE:NOROOT(3)
+
+        SECTION CSTACK:DATA:NOROOT(3)
+        PUBLIC  __main_thread_stack_base__
+__main_thread_stack_base__:
+        PUBLIC  __heap_end__
+__heap_end__:
+
+        SECTION SYSHEAP:DATA:NOROOT(3)
+        PUBLIC  __heap_base__
+__heap_base__:
+
+        PUBLIC  __iar_program_start
+        EXTERN  __vector_table
+        EXTWEAK __iar_init_core
+        EXTWEAK __iar_init_vfp
+        EXTERN  __cmain
+
+        SECTION .text:CODE:REORDER(2)
+        REQUIRE __vector_table
+        THUMB
+__iar_program_start:
+        cpsid   i
+        ldr     r0, =SFE(CSTACK)
+        msr     PSP, r0
+        movs    r0, #CONTROL_MODE_PRIVILEGED | CONTROL_USE_PSP
+        msr     CONTROL, r0
+        isb
+        bl      __early_init
+        bl      __iar_init_core
+        bl      __iar_init_vfp
+        b       __cmain
+
+        PUBWEAK __early_init
+__early_init:
+        bx      lr
+
+        END