GHS placeholder files.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10662 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 246 insertions, 0 deletions

diff --git a/os/common/startup/e200/compilers/GHS/crt0.s b/os/common/startup/e200/compilers/GHS/crt0.s
new file mode 100644
index 000000000..7c4b47bd4
--- /dev/null
+++ b/os/common/startup/e200/compilers/GHS/crt0.s
@@ -0,0 +1,246 @@
+/*

+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio

+

+    Licensed under the Apache License, Version 2.0 (the "License");

+    you may not use this file except in compliance with the License.

+    You may obtain a copy of the License at

+

+        http://www.apache.org/licenses/LICENSE-2.0

+

+    Unless required by applicable law or agreed to in writing, software

+    distributed under the License is distributed on an "AS IS" BASIS,

+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+    See the License for the specific language governing permissions and

+    limitations under the License.

+*/

+

+/**

+ * @file    GCC/crt0.S

+ * @brief   Generic PowerPC startup file for GCC.

+ *

+ * @addtogroup PPC_GCC_CORE

+ * @{

+ */

+

+/*===========================================================================*/

+/* Module constants.                                                         */

+/*===========================================================================*/

+

+#if !defined(FALSE) || defined(__DOXYGEN__)

+#define FALSE                               0

+#endif

+

+#if !defined(TRUE) || defined(__DOXYGEN__)

+#define TRUE                                1

+#endif

+

+#if defined(__HIGHTEC__)

+#define se_bge bge

+#endif

+

+/*===========================================================================*/

+/* Module pre-compile time settings.                                         */

+/*===========================================================================*/

+

+/**

+ * @brief   Stack segments initialization switch.

+ */

+#if !defined(CRT0_STACKS_FILL_PATTERN) || defined(__DOXYGEN__)

+#define CRT0_STACKS_FILL_PATTERN            0x55555555

+#endif

+

+/**

+ * @brief   Stack segments initialization switch.

+ */

+#if !defined(CRT0_INIT_STACKS) || defined(__DOXYGEN__)

+#define CRT0_INIT_STACKS                    TRUE

+#endif

+

+/**

+ * @brief   DATA segment initialization switch.

+ */

+#if !defined(CRT0_INIT_DATA) || defined(__DOXYGEN__)

+#define CRT0_INIT_DATA                      TRUE

+#endif

+

+/**

+ * @brief   BSS segment initialization switch.

+ */

+#if !defined(CRT0_INIT_BSS) || defined(__DOXYGEN__)

+#define CRT0_INIT_BSS                       TRUE

+#endif

+

+/**

+ * @brief   Constructors invocation switch.

+ */

+#if !defined(CRT0_CALL_CONSTRUCTORS) || defined(__DOXYGEN__)

+#define CRT0_CALL_CONSTRUCTORS              TRUE

+#endif

+

+/**

+ * @brief   Destructors invocation switch.

+ */

+#if !defined(CRT0_CALL_DESTRUCTORS) || defined(__DOXYGEN__)

+#define CRT0_CALL_DESTRUCTORS               TRUE

+#endif

+

+/*===========================================================================*/

+/* Code section.                                                             */

+/*===========================================================================*/

+

+#if !defined(__DOXYGEN__)

+

+        .section    .crt0, "ax"

+        .align		2

+        .globl      _boot_address

+        .type       _boot_address, @function

+_boot_address:

+        /* Stack setup.*/

+        e_lis       r1, __process_stack_end__@h

+        e_or2i      r1, __process_stack_end__@l

+        se_li       r0, 0

+        e_stwu      r0, -8(r1)

+

+        /* Small sections registers initialization.*/

+        e_lis       r2, __sdata2_start__@h

+        e_or2i      r2, __sdata2_start__@l

+        e_lis       r13, __sdata_start__@h

+        e_or2i      r13, __sdata_start__@l

+

+        /* Early initialization.*/

+        e_bl        __early_init

+

+#if CRT0_INIT_STACKS == TRUE

+        /* Stacks fill pattern.*/

+        e_lis       r7, CRT0_STACKS_FILL_PATTERN@h

+        e_or2i      r7, CRT0_STACKS_FILL_PATTERN@l

+

+       /* IRQ Stack initialization. Note, the architecture does not use this

+          stack, the size is usually zero. An OS can have special SW handling

+          and require this. A 4 bytes alignment is assmend and required.*/

+        e_lis       r4, __irq_stack_base__@h

+        e_or2i      r4, __irq_stack_base__@l

+        e_lis       r5, __irq_stack_end__@h

+        e_or2i      r5, __irq_stack_end__@l

+.irqsloop:

+        se_cmpl     r4, r5

+        se_bge      .irqsend

+        se_stw      r7, 0(r4)

+        se_addi     r4, 4

+        se_b        .irqsloop

+.irqsend:

+

+        /* Process Stack initialization. Note, does not overwrite the already

+           written EABI frame. A 4 bytes alignment is assmend and required.*/

+        e_lis       r4, __process_stack_base__@h

+        e_or2i      r4, __process_stack_base__@l

+        e_lis       r5, (__process_stack_end__ - 8)@h

+        e_or2i      r5, (__process_stack_end__ - 8)@l

+.prcsloop:

+        se_cmpl     r4, r5

+        se_bge      .prcsend

+        se_stw      r7, 0(r4)

+        se_addi     r4, 4

+        se_b        .prcsloop

+.prcsend:

+#endif

+

+#if CRT0_INIT_BSS == TRUE

+        /* BSS clearing.*/

+        e_lis       r4, __bss_start__@h

+        e_or2i      r4, __bss_start__@l

+        e_lis       r5, __bss_end__@h

+        e_or2i      r5, __bss_end__@l

+        se_li       r7, 0

+.bssloop:

+        se_cmpl     r4, r5

+        se_bge      .bssend

+        se_stw      r7, 0(r4)

+        se_addi     r4, 4

+        se_b        .bssloop

+.bssend:

+#endif

+

+#if CRT0_INIT_DATA == TRUE

+        /* DATA initialization.*/

+        e_lis       r4, __romdata_start__@h

+        e_or2i      r4, __romdata_start__@l

+        e_lis       r5, __data_start__@h

+        e_or2i      r5, __data_start__@l

+        e_lis       r6, __data_end__@h

+        e_or2i      r6, __data_end__@l

+.dataloop:

+        se_cmpl     r5, r6

+        se_bge      .dataend

+        se_lwz      r7, 0(r4)

+        se_addi     r4, 4

+        se_stw      r7, 0(r5)

+        se_addi     r5, 4

+        se_b        .dataloop

+.dataend:

+#endif

+

+        /* Late initialization.*/

+        e_bl        __late_init

+

+#if CRT0_CALL_CONSTRUCTORS == TRUE

+        /* Constructors invocation.*/

+        e_lis       r4, __init_array_start@h

+        e_or2i      r4, __init_array_start@l

+        e_lis       r5, __init_array_end@h

+        e_or2i      r5, __init_array_end@l

+.iniloop:

+        se_cmpl     r4, r5

+        se_bge      .iniend

+        se_lwz      r6, 0(r4)

+        mtctr       r6

+        se_addi     r4, 4

+        se_bctrl

+        se_b        .iniloop

+.iniend:

+#endif

+

+        /* Main program invocation.*/

+        e_bl        main

+

+#if CRT0_CALL_DESTRUCTORS == TRUE

+        /* Destructors invocation.*/

+        e_lis       r4, __fini_array_start@h

+        e_or2i      r4, __fini_array_start@l

+        e_lis       r5, __fini_array_end@h

+        e_or2i      r5, __fini_array_end@l

+.finiloop:

+        se_cmpl     r4, r5

+        se_bge      .finiend

+        se_lwz      r6, 0(r4)

+        mtctr       r6

+        se_addi     r4, 4

+        se_bctrl

+        se_b        .finiloop

+.finiend:

+#endif

+

+        /* Branching to the defined exit handler.*/

+        e_b         __default_exit

+

+        /* Default main exit code, infinite loop.*/

+        .weak       __default_exit

+        .type       __default_exit, @function

+__default_exit:

+        e_b         __default_exit

+

+        /* Default early initialization code, none.*/

+        .weak       __early_init

+        .type       __early_init, @function

+__early_init:

+        se_blr

+

+        /* Default late initialization code, none.*/

+        .weak       __late_init

+        .type       __late_init, @function

+__late_init:

+        se_blr

+

+#endif /* !defined(__DOXYGEN__) */

+

+/** @} */