From 3c7ed6b8cd505f696c9c2b6d90723094f334b348 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Wed, 6 Jul 2005 18:46:04 +0000 Subject: 2005-07-06 Markku Puro * .cvsignore, ChangeLog, Makefile.am, README, bsp_specs, configure.ac, clock/clockdrv.c, console/conio.c, console/console.c, console/defaultfont.c, include/arm_mode_bits.h, include/asm_macros.h, include/bsp.h, include/bspopts.h.in, include/conio.h, include/gba.h, include/gba_registers.h, include/tm27.h, irq/bsp_irq_asm.S, irq/bsp_irq_init.c, irq/irq.c, irq/irq.h, irq/irq_asm.S, irq/irq_init.c, start/logo.S, start/start.S, startup/bspstart.c, startup/cpu.c, startup/cpu_asm.S, startup/exit.c, startup/linkcmds, timer/timer.c: New files. --- c/src/lib/libbsp/arm/gba/startup/bspstart.c | 197 ++++++++++++++++ c/src/lib/libbsp/arm/gba/startup/cpu.c | 170 ++++++++++++++ c/src/lib/libbsp/arm/gba/startup/cpu_asm.S | 86 +++++++ c/src/lib/libbsp/arm/gba/startup/exit.c | 54 +++++ c/src/lib/libbsp/arm/gba/startup/linkcmds | 348 ++++++++++++++++++++++++++++ 5 files changed, 855 insertions(+) create mode 100644 c/src/lib/libbsp/arm/gba/startup/bspstart.c create mode 100644 c/src/lib/libbsp/arm/gba/startup/cpu.c create mode 100644 c/src/lib/libbsp/arm/gba/startup/cpu_asm.S create mode 100644 c/src/lib/libbsp/arm/gba/startup/exit.c create mode 100644 c/src/lib/libbsp/arm/gba/startup/linkcmds (limited to 'c/src/lib/libbsp/arm/gba/startup') diff --git a/c/src/lib/libbsp/arm/gba/startup/bspstart.c b/c/src/lib/libbsp/arm/gba/startup/bspstart.c new file mode 100644 index 0000000000..e21effe7d0 --- /dev/null +++ b/c/src/lib/libbsp/arm/gba/startup/bspstart.c @@ -0,0 +1,197 @@ +/** + * @file bspstart.c + * + * This file contains the GBA BSP startup package. + * It includes application, board, and monitor specific initialization and + * configuration. The generic CPU dependent initialization has been + * performed before this routine is invoked. + */ +/* + * RTEMS GBA BSP + * + * Copyright (c) 2004 Markku Puro + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include +#include +#include +#include +#include +#include +#include + +#define BSP_DEBUG 0 + +/* Global Variables, Defined in 'linkcmds' */ +extern void _end; +extern void _stack_size; +extern void _irq_max_vector; +extern void __heap_limit; +extern void __ro_start; +extern void __ro_end; +extern void __data_start; +extern void __data_end; +extern void __load_start_data; +extern void __load_stop_data; +extern void __ewram_start; +extern void __ewram_end; +extern void __load_start_ewram; +extern void __load_stop_ewram; +extern void __iwram_start; +extern void __iwram_end; +extern void __load_start_iwram; +extern void __load_stop_iwram; +extern void __bss_start; +extern void __bss_end; + +/** The original BSP configuration table from the application. */ +extern rtems_configuration_table Configuration; +/** Our copy of BSP configuration table from the application. */ +rtems_configuration_table BSP_Configuration; + +/* External Prototypes */ +extern void bsp_cleanup( void ); +extern void rtems_irq_mngt_init(void); +extern void bsp_libc_init( void *, rtems_unsigned32, int ); +extern void bsp_postdriver_hook(void); + + +/** Chip registers */ +volatile unsigned int *Regs = (unsigned int *)GBA_IO_REGS_ADDR; + +/** + * Size of heap if it is 0 it will be dynamically defined by memory size, + * otherwise the value should be changed by binary patch + */ +rtems_unsigned32 _heap_size = 0; + +/** Address of start of free memory - should be updated after creating new partitions or regions.*/ +rtems_unsigned32 rtemsFreeMemStart; + +/** CPU configuration table. */ +rtems_cpu_table Cpu_table; +/** Program name - from main(). */ +char *rtems_progname; + + +/** + * @brief BSP pretasking hook. + * + * Called just before drivers are initialized. + * Used to setup libc and install any BSP extensions. + * + * NOTE: Must not use libc (to do io) from here, since drivers are not yet initialized. + * + * @param None + * @return None + */ +void bsp_pretasking_hook(void) +{ + + if (_heap_size == 0) { + _heap_size = (rtems_unsigned32)&__heap_limit - rtemsFreeMemStart; + } + + bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0); + + rtemsFreeMemStart += _heap_size; + + +#ifdef RTEMS_DEBUG + rtems_debug_enable(RTEMS_DEBUG_ALL_MASK); +#endif /* RTEMS_DEBUG */ + +#if BSP_DEBUG + /* The following information is very useful when debugging. */ + printk("[bsp_pretasking_hook]\n"); + printk("_heap_size = 0x%x\n", _heap_size); + printk("_stack_size = 0x%x\n", (rtems_unsigned32)&_stack_size); + printk("_irq_max_vector = 0x%x\n", (rtems_unsigned32)&_irq_max_vector); + printk("__ro_start = 0x%x : __ro_end = 0x%x\n", (rtems_unsigned32)&__ro_start, (rtems_unsigned32)&__ro_end); + printk("__ewram_start = 0x%x : __ewram_end = 0x%x\n", (rtems_unsigned32)&__ewram_start, (rtems_unsigned32)&__ewram_end); + printk("__data_start = 0x%x : __data_end = 0x%x\n", (rtems_unsigned32)&__data_start, (rtems_unsigned32)&__data_end); + printk("__bss_start = 0x%x : __bss_end = 0x%x\n", (rtems_unsigned32)&__bss_start,(rtems_unsigned32)&__bss_end); + printk("__iwram_start = 0x%x : __iwram_end = 0x%x\n", (rtems_unsigned32)&__iwram_start,(rtems_unsigned32)&__iwram_end); + printk("__load_start_iwram = 0x%x\n", (rtems_unsigned32)&__load_start_iwram); + printk("__load_stop_iwram = 0x%x\n", (rtems_unsigned32)&__load_stop_iwram); + printk("__load_start_ewram = 0x%x\n", (rtems_unsigned32)&__load_start_ewram); + printk("__load_stop_ewram = 0x%x\n", (rtems_unsigned32)&__load_stop_ewram); + printk("__load_start_data = 0x%x\n", (rtems_unsigned32)&__load_start_data); + printk("__load_stop_data = 0x%x\n", (rtems_unsigned32)&__load_stop_data); +#endif +} + + +/** + * @brief BSP Start + * + * Called before main is invoked. + * + * @param None + * @return None + */ +void bsp_start_default( void ) +{ + /* set the value of start of free memory. */ + rtemsFreeMemStart = (rtems_unsigned32)&_end; + + /* If we don't have command line arguments set default program name. */ + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + Cpu_table.predriver_hook = NULL; /* use system's */ + Cpu_table.postdriver_hook = bsp_postdriver_hook; + Cpu_table.idle_task = NULL; /* don't override system IDLE task */ + Cpu_table.do_zero_of_workspace = TRUE; + Cpu_table.interrupt_stack_size = 0; + Cpu_table.extra_mpci_receive_server_stack = 0; + + + /* Place RTEMS workspace at beginning of free memory. */ + BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart; + rtemsFreeMemStart += BSP_Configuration.work_space_size; + + /* Init conio */ + gba_textmode(CO60); + + /* Init rtems exceptions management */ + /*!!!!!GBA - Can't use exception vectors in GBA because they are already in GBA ROM BIOS */ + /* rtems_exception_init_mngt(); */ + + /* Init rtems interrupt management */ + rtems_irq_mngt_init(); + +#if BSP_DEBUG + /* The following information is very useful when debugging. */ + printk("[bsp_start]\n"); + printk("rtemsFreeMemStart= 0x%x\n", rtemsFreeMemStart); + printk("__heap_limit = 0x%x\n", (rtems_unsigned32)&__heap_limit); + printk("work_space_start = 0x%x size = 0x%x\n", BSP_Configuration.work_space_start,BSP_Configuration.work_space_size); + printk("maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions); + printk("microseconds_per_tick = 0x%x\n", BSP_Configuration.microseconds_per_tick); + printk("ticks_per_timeslice = 0x%x\n", BSP_Configuration.ticks_per_timeslice); + printk("maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices); + printk("number_of_device_drivers = 0x%x\n", BSP_Configuration.number_of_device_drivers); + printk("Device_driver_table = 0x%x\n", BSP_Configuration.Device_driver_table); +#endif + + /* Do we have enough memory */ + if ((rtems_unsigned32)&__heap_limit < rtemsFreeMemStart) { + printk("\nFatal Error: Memory overflow[0x%x]!\n",rtemsFreeMemStart); + bsp_cleanup(); + } + +} + + +/** + * @brief weak alias for bsp_start_default + * + * By making this a weak alias for bsp_start_default, a brave soul + * can override the actual bsp_start routine used. + */ +void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default"))); diff --git a/c/src/lib/libbsp/arm/gba/startup/cpu.c b/c/src/lib/libbsp/arm/gba/startup/cpu.c new file mode 100644 index 0000000000..3ce8e5de42 --- /dev/null +++ b/c/src/lib/libbsp/arm/gba/startup/cpu.c @@ -0,0 +1,170 @@ +/** + * @file cpu.c + * + * ARM CPU Dependent Source. + */ +/* + * RTEMS GBA BSP + * + * COPYRIGHT (c) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * Copyright (c) 2002 Advent Networks, Inc + * Jay Monkman + * + * Copyright (c) 2004 + * Markku Puro + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** + * @brief _CPU_Initialize routine performs processor dependent initialization + * + * @param cpu_table CPU table to initialize + * @param thread_dispatch address of ISR disptaching routine (unused) + * @return None + */ +void _CPU_Initialize( + rtems_cpu_table *cpu_table, + void (*thread_dispatch) /* ignored on this CPU */ +) +{ + _CPU_Table = *cpu_table; +} + +/** + * @brief _CPU_ISR_Get_level returns the current interrupt level + * + * @param None + * @return int level + */ +uint32_t _CPU_ISR_Get_level( void ) +{ + uint32_t reg = 0; /* to avoid warning */ + + asm volatile ("mrs %0, cpsr \n" \ + "and %0, %0, #0xc0 \n" \ + : "=r" (reg) \ + : "0" (reg) ); + return reg; +} + + +/** + * @brief _CPU_ISR_install_vector kernel routine installs the RTEMS handler for the + * specified vector + * + * @param vector interrupt vector number + * @param new_handler replacement ISR for this vector number + * @param old_handler pointer to store former ISR for this vector number + * @return None + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + */ +extern __inline__ void _CPU_ISR_install_vector(uint32_t vector, proc_ptr new_handler, proc_ptr *old_handler); + +/** + * @brief _CPU_Context_Initialize kernel routine initialize the specified context + * + * @param the_context + * @param stack_base + * @param size + * @param new_level + * @param entry_point + * @param is_fp + * @return None + */ +void _CPU_Context_Initialize( + Context_Control *the_context, + uint32_t *stack_base, + uint32_t size, + uint32_t new_level, + void *entry_point, + boolean is_fp +) +{ + the_context->register_sp = (uint32_t)stack_base + size ; + the_context->register_lr = (uint32_t)entry_point; + the_context->register_cpsr = new_level | ModePriv; +} + + +/** + * @brief _CPU_Install_interrupt_stack function is empty since the BSP must set up the interrupt stacks. + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + */ +extern __inline__ void _CPU_Install_interrupt_stack( void ); + +/** + * @brief _defaultExcHandler function is empty + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + */ +extern void _defaultExcHandler (CPU_Exception_frame *ctx); + +/** + * @brief _currentExcHandler function is empty (_defaultExcHandler) + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + */ +cpuExcHandlerType _currentExcHandler = _defaultExcHandler; +/* +extern void _Exception_Handler_Undef_Swi(); +extern void _Exception_Handler_Abort(); +extern void _exc_data_abort(); +*/ + +/** + * @brief rtems_exception_init_mngt function is empty since the BSP must set up the interrupt stacks. + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + */ +extern __inline__ void rtems_exception_init_mngt(); + + +/** + * @brief do_data_abort function is empty + * + * This function figure out what caused the data abort + * + * @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! + * This function is supposed to figure out what caused the data abort, do that, then return. + * All unhandled instructions cause the system to hang. + */ +extern __inline__ void do_data_abort(uint32_t insn, uint32_t spsr, CPU_Exception_frame *ctx); + + +/* @todo Can't use exception vectors in GBA because they are already in GBA ROM BIOS!! */ +/* @todo Remove dummy functions needed by linker + ****************************************************************************************/ +/* @cond INCLUDE_ASM */ +asm (" .text"); +asm (" .arm"); +asm (" .global _CPU_ISR_install_vector"); +asm ("_CPU_ISR_install_vector:"); +asm (" .global _CPU_Install_interrupt_stack"); +asm ("_CPU_Install_interrupt_stack:"); +asm (" .global _defaultExcHandler"); +asm ("_defaultExcHandler:"); +asm (" .global rtems_exception_init_mngt"); +asm ("rtems_exception_init_mngt:"); +asm (" .global do_data_abort"); +asm ("do_data_abort:"); +asm (" mov pc, lr"); +/* @endcond */ + diff --git a/c/src/lib/libbsp/arm/gba/startup/cpu_asm.S b/c/src/lib/libbsp/arm/gba/startup/cpu_asm.S new file mode 100644 index 0000000000..d4ea836960 --- /dev/null +++ b/c/src/lib/libbsp/arm/gba/startup/cpu_asm.S @@ -0,0 +1,86 @@ +/** + * @file cpu_asm.S + * + * This file contains the implementation of exception handlers. + */ +/* + * RTEMS GBA BSP + * + * Copyright (c) 2002 by Advent Networks, Inc. + * Jay Monkman + * + * COPYRIGHT (c) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * Copyright (c) 2004 + * Markku Puro + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#define __asm__ +#include +#include +#include +/* @cond INCLUDE_ASM */ + +/** + * This routine performs a normal non-FP context. + * function void _CPU_Context_switch( run_context, heir_context ) + * R0 = run_context R1 = heir_context + * + * This function copies the current registers to where r0 points, then + * restores the ones from where r1 points. + * + * Using the ldm/stm opcodes save 2-3 us on 100 MHz ARM9TDMI with + * a 16 bit data bus. + * + */ + .align +/* .section .iwram */ +PUBLIC_ARM_FUNCTION(_CPU_Context_switch) +/* Start saving context */ + mrs r2, cpsr + stmia r0, {r2, r4, r5, r6, r7, r8, r9, r10, r11, r13, r14} +/* Start restoring context */ +_restore: + ldmia r1, {r2, r4, r5, r6, r7, r8, r9, r10, r11, r13, r14} + msr cpsr, r2 + mov pc, lr +LABEL_END(_CPU_Context_switch) + +/** + * This function copies the restores the registers from where r0 points. + * function void _CPU_Context_restore( new_context ) + * It must match _CPU_Context_switch() + * + */ +PUBLIC_ARM_FUNCTION(_CPU_Context_restore) + mov r1, r0 + b _restore +LABEL_END(_CPU_Context_restore) + +/** + * function _Exception_Handler_Undef_Swi + * Can't use exception vectors in GBA + * @todo _Exception_Handler_Undef_Swi: Unused handler needed by ../score/cpu_asm.S + * + */ + .global _Exception_Handler_Undef_Swi +_Exception_Handler_Undef_Swi: + mov pc, lr + +/** + * function _Exception_Handler_Abort + * Can't use exception vectors in GBA + * @todo _Exception_Handler_Abort: Unused handler needed by ../score/cpu_asm.S + * + */ + .global _Exception_Handler_Abort +_Exception_Handler_Abort: + mov pc, lr +/* @endcond */ diff --git a/c/src/lib/libbsp/arm/gba/startup/exit.c b/c/src/lib/libbsp/arm/gba/startup/exit.c new file mode 100644 index 0000000000..d5fa3789ae --- /dev/null +++ b/c/src/lib/libbsp/arm/gba/startup/exit.c @@ -0,0 +1,54 @@ +/** + * @file exit.c + * + * Routines to shutdown and reboot the BSP. + */ +/* + * RTEMS GBA BSP + * + * Copyright (c) 2004 Markku Puro + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include +#include +#include +#include +#include + + +/** + * @brief rtemsReboot BSP routine reboot rtems + * + * Input parameters: None + * + * Output parameters: None + */ +void rtemsReboot (void) +{ + asm volatile ("ldr r0, =_gba_reset"); + asm volatile ("bx r0"); +} + +/** + * @brief bsp_cleanup BSP routine wait input from user for rebooting + * + * Normally at this point, the console driver is disconnected => we must + * use polled output/input. This is exactly what printk does. + * + * @param None + * @return None + */ +void bsp_cleanup(void) +{ + static const char line[]="\nEXECUTIVE SHUTDOWN! Press button to reboot..."; + printk("\n"); + printk("%s",line); + while ( !GBA_ANY_KEY(GBA_KEY_ALL) ); + rtemsReboot(); +} diff --git a/c/src/lib/libbsp/arm/gba/startup/linkcmds b/c/src/lib/libbsp/arm/gba/startup/linkcmds new file mode 100644 index 0000000000..b985e9c6ab --- /dev/null +++ b/c/src/lib/libbsp/arm/gba/startup/linkcmds @@ -0,0 +1,348 @@ +/** + * @file linkcmds + * + * GBA BSP linker script + */ +/* + * RTEMS GBA BSP + * + * Copyright (c) Jeff Frohwein + * + * Copyright (c) 2003 Jason Wilkins + * + * Copyright (c) 2004 Markku Puro + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +/***************************************************************************** + * This Linker Script is based on work by Jeff Frohwein and Jason Wilkins + ***************************************************************************** + * Linker Script v1.3 by Jeff Frohwein + * : + * This file is released into the public domain + * for commercial or non-commercial use with no + * restrictions placed upon it. + ***************************************************************************** + * Copyright 2003, Jason Wilkins. This source code is free for any use except + * that this copyright notice and the following disclaimers remain intact when + * the source is distributed. There are absolutely no restrictions on use of + * object code generated from this source, but the disclaimers remain in force. + * + * THIS CODE WAS NOT MADE IN ASSOCIATION WITH NINTENDO AND DOES NOT MAKE USE OF + * ANY INTELLECTUAL PROPERTY CLAIMED BY NINTENDO. + * + * GAMEBOY ADVANCE IS A TRADEMARK OF NINTENDO. + * + * THIS CODE HAS BEEN PROVIDED "AS-IS" WITHOUT A WARRANTY OF ANY KIND, EITHER + * EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO IMPLIED WARRANTIES OF + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE ENTIRE RISK AS TO THE + * QUALITY OR PERFORMANCE OF THE CODE IS WITH YOU. + * + * IN NO EVENT, UNLESS AGREED TO IN WRITING, WILL ANY COPYRIGHT HOLDER, OR ANY + * OTHER PARTY, BE HELD LIABLE FOR ANY DAMAGES RESULTING FROM THE USE OR + * INABILITY TO USE THIS CODE. + * + *****************************************************************************/ +/* @cond INCLUDE_ASM */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) + +/************************************************************************* + The linker script MEMORY directive is not used here due to the fact + that __ro_start is not always a fixed value. + ************************************************************************* +MEMORY +{ + rom : ORIGIN = 0x08000000 , LENGTH = 96M + iwram : ORIGIN = 0x03000000 , LENGTH = 32K + ewram : ORIGIN = 0x02000000 , LENGTH = 256K + sram : ORIGIN = 0x0E000000 , LENGTH = 64K +} + *************************************************************************/ +__gba_ewram_start = 0x02000000; +__gba_ewram_end = 0x02040000; +__gba_iwram_start = 0x03000000; +__gba_iwram_end = 0x03008000; +__gba_rom_start = 0x08000000; +__gba_rom_end = 0x0E000000; +__gba_sram_start = 0x0E000000; +__gba_sram_end = 0x0E010000; + +__sp_irq_size = 0x2A0; +_stack_size = 0xA00; +__irq_vector = __gba_iwram_end - 0x0004; /* 0x03007FFC */ +__sp_svc = __gba_iwram_end - 0x0020; /* 0x03007FE0 */ +__sp_irq = __gba_iwram_end - 0x0060; /* 0x03007FA0 */ +__sp_usr = __sp_irq - __sp_irq_size; /* 0x03007D00 */ +__sp_limit = __sp_usr - _stack_size; /* 0x03007300 */ +__heap_limit = DEFINED(__gba_multiboot) ? __gba_ewram_end : ( DEFINED(__gba_iwram_bss) ? __sp_limit : __gba_ewram_end ) ; + + +SECTIONS +{ +/*** read-only sections ***/ +/************************************************************************* + if 'multiboot' allocate prog in __gba_ewram_start (0x02000000-0x0207FFFF) + else allocate prog in __gba_rom_start (0x08000000-0x0DFFFFFF) + *************************************************************************/ + __ro_start = DEFINED(__gba_multiboot) ? __gba_ewram_start : __gba_rom_start ; + PROVIDE(__text_start__ = __ro_start ); + .text __ro_start : + { + CREATE_OBJECT_SYMBOLS + */start.o(.text) + *(EXCLUDE_FILE(*.rodata.* *.ewram.o *.iwram.o) .text) + *(.stub .text.* .gnu.linkonce.t*) + + /* + * Special FreeBSD sysctl sections. + */ + . = ALIGN (16); + __start_set_sysctl_set = .; + *(set_sysctl_*); + __stop_set_sysctl_set = ABSOLUTE(.); + *(set_domain_*); + *(set_pseudo_*); + + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.glue_7) + *(.glue_7t) + . = ALIGN(4); + } =0xFF + + .init : + { + *(.init) + . = ALIGN(4); + } =0xFF + + .fini : + { + *(.fini) + . = ALIGN(4); + } =0xFF + + __rodata_start = . ; + .rodata : + { + *(.rodata1) + *(EXCLUDE_FILE(*.rodata.* *.ewram.o *.iwram.o) .rodata) + *(.rodata.* .gnu.linkonce.r*) + *(.roda) /* deprecated: for compatibility with objcopyroda */ + SORT(CONSTRUCTORS) + . = ALIGN(4); + } =0xFF + __rodata_end = . ; + + .eh_frame : + { + KEEP(*(.eh_frame)) + . = ALIGN(4); + } =0xFF + + .gcc_except_table : + { + *(.gcc_except_table) + . = ALIGN(4); + } =0xFF + + .ctors : + { + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is first. + Because this is a wildcard, it doesn't matter + if the user does not actually link against crtbegin.o; + the linker won't look for a file to match a wildcard. + The wildcard also means that it doesn't matter which + directory crtbegin.o is in. + */ + KEEP(*crtbegin.o(.ctors)) + /* We don't want to include the .ctor section from + the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last + */ + KEEP(*(EXCLUDE_FILE (*crtend.o) .ctors)) + KEEP(*(SORT(.ctors.*))) + KEEP(*(.ctors)) + . = ALIGN(4); + } =0xFF + + .dtors : + { + KEEP(*crtbegin.o(.dtors)) + KEEP(*(EXCLUDE_FILE (*crtend.o ) .dtors)) + KEEP(*(SORT(.dtors.*))) + KEEP(*(.dtors)) + . = ALIGN(4); + } =0xFF + + .jcr : + { + *(.jcr) + . = ALIGN(4); + } =0xFF + +/************************************************************************* + calculate __ro_end + *************************************************************************/ + __ro_end = + ADDR(.text) + + SIZEOF(.text) + + SIZEOF(.init) + + SIZEOF(.fini) + + SIZEOF(.rodata) + + SIZEOF(.eh_frame) + + SIZEOF(.gcc_except_table) + + SIZEOF(.ctors) + + SIZEOF(.dtors) + + SIZEOF(.jcr); + PROVIDE(__text_end__ = __ro_end ); + +/*** IWRAM ***/ +/************************************************************************* + allocate iwram in __gba_iwram_start (0x03000000-0x03003FFF) + *************************************************************************/ + __load_start_iwram = __ro_end; + . = __gba_iwram_start ; + __iwram_start = . ; + PROVIDE(__iwram_start__ = . ); + .iwram : AT(__load_start_iwram) + { + /* put irq_vector_table in stat of iwram */ + CREATE_OBJECT_SYMBOLS + _irq_vector_table = .; + PROVIDE(irq_vector_table = .); + . += 4; + . = ALIGN(16 * 4); + PROVIDE(irq_vector_table_end = .); + _irq_vector_table_end = .; + *(.iwram .iwram.*) + *.iwram.o (.text .rodata .data) + . = ALIGN(4); + } =0xFF + __iwram_end = . ; + PROVIDE(__iwram_end__ = . ); + __load_stop_iwram = __load_start_iwram + SIZEOF(.iwram); + + _irq_vector_table_size = _irq_vector_table_end - _irq_vector_table; + PROVIDE(_irq_max_vector = _irq_vector_table_size / 4 ); + + +/*** EWRAM ***/ +/************************************************************************* + if 'multiboot' allocate prog+ewram in __gba_ewram + else allocate only ewram in __gba_ewram_start + *************************************************************************/ + . = DEFINED(__gba_multiboot) ? __load_stop_iwram : __gba_ewram_start ; + __load_start_ewram = __load_stop_iwram; + __ewram_start = . ; + PROVIDE(__ewram_start__ = . ); + .ewram : AT(__load_start_ewram) + { + *(.ewram .ewram.*) + *.ewram.o (.text .rodata .data) + . = ALIGN(4); + } =0xFF + __ewram_end = . ; + PROVIDE(__ewram_end__ = . ); + __load_stop_ewram = __load_start_ewram + SIZEOF(.ewram) ; + +/************************************************************************* + if 'multiboot' allocate prog+ewram+data+bss in __gba_ewram + else if 'iwram_data' allocate data in __gba_iwram + else allocate data in __gba_ewram + *************************************************************************/ + . = DEFINED(__gba_multiboot) ? __load_stop_ewram : (DEFINED(__gba_iwram_data) ? __iwram_end : __ewram_end) ; + __load_start_data = __load_stop_ewram; + __data_start = . ; + PROVIDE(__data_start__ = . ); + .data : AT(__load_start_data) + { + *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) + *(EXCLUDE_FILE(*.rodata.* *.ewram.o *.iwram.o) .data) + *(.data.* .gnu.linkonce.d.*) + *(.data1) + *(.tdata .tdata.* .gnu.linkonce.td.*) + *(.sdata .sdata.* .gnu.linkonce.s.*) + . = ALIGN(4); + } =0xFF + __data_end = . ; + PROVIDE(__data_end__ = . ); + __load_stop_data = __load_start_data + SIZEOF(.data); + +/*** BSS ***/ +/************************************************************************* + if 'multiboot' allocate prog+ewram+data+bss in __gba_ewram + else if 'iwram_data' and 'iwram_bss' allocate iwram+data+bss in __gba_iwram + else if !'iwram_data' and 'iwram_bss' allocate iwram+bss in __gba_iwram + else allocate data+ewram+bss in __gba_ewram + *************************************************************************/ + . = DEFINED(__gba_multiboot) ? __load_stop_data : ( DEFINED(__gba_iwram_data) ? (DEFINED(__gba_iwram_bss) ? __data_end : __ewram_end) : (DEFINED(__gba_iwram_bss) ? __iwram_end : __data_end) ) ; + __bss_start = . ; + PROVIDE(__bss_start__ = . ); + .bss : + { + *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) + *(.tbss .tbss.* .gnu.linkonce.tb.*) + *(.tcommon) + *(.sbss .sbss.* .gnu.linkonce.sb.*) + *(.scommon) + *(.bss .bss.* .gnu.linkonce.b*) + *(COMMON) + . = ALIGN(4); + } + __bss_end = . ; + PROVIDE(__bss_end__ = . ); + PROVIDE(_bss_end__ = . ); + + PROVIDE(_end = . ); + PROVIDE(__end__ = _end); + PROVIDE(end = _end); + + +/*** debugging info ***/ + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + .comment 0 : { *(.comment) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } +} +/* @endcond */ -- cgit v1.2.3