arch/nios2nommu/kernel/asm-offsets.c

   1 /*
   2  * This program is used to generate definitions needed by
   3  * assembly language modules.
   4  *
   5  * We use the technique used in the OSF Mach kernel code:
   6  * generate asm statements containing #defines,
   7  * compile this file to assembler, and then extract the
   8  * #defines from the assembly-language output.
   9  */
  10
  11 #include <linux/stddef.h>
  12 #include <linux/sched.h>
  13 #include <linux/kernel_stat.h>
  14 #include <linux/ptrace.h>
  15 #include <asm/bootinfo.h>
  16 #include <asm/irq.h>
  17 #include <asm/hardirq.h>
  18 #include <asm/nios.h>
  19
  20 #define DEFINE(sym, val) \
  21         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  22
  23 #define BLANK() asm volatile("\n->" : : )
  24
  25 int main(void)
  26 {
  27
  28         /* offsets into the task struct */
  29         DEFINE(TASK_STATE, offsetof(struct task_struct, state));
  30         DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
  31         DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
  32         DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
  33         DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
  34         DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info));
  35         DEFINE(TASK_MM, offsetof(struct task_struct, mm));
  36         DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
  37
  38         /* offsets into the kernel_stat struct */
  39         DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs));
  40
  41         /* offsets into the irq_cpustat_t struct */
  42         DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
  43
  44         /* offsets into the irq_node struct */
  45         DEFINE(IRQ_HANDLER, offsetof(struct irq_hand, handler));
  46         DEFINE(IRQ_FLAGS, offsetof(struct irq_hand, flags));
  47         DEFINE(IRQ_DEV_ID, offsetof(struct irq_hand, dev_id));
  48         DEFINE(IRQ_DEVNAME, offsetof(struct irq_hand, devname));
  49
  50         /* offsets into the thread struct */
  51         DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
  52         DEFINE(THREAD_KPSR, offsetof(struct thread_struct, kpsr));
  53         DEFINE(THREAD_KESR, offsetof(struct thread_struct, kesr));
  54         DEFINE(THREAD_FLAGS, offsetof(struct thread_struct, flags));
  55
  56         /* offsets into the pt_regs */
  57         DEFINE(PT_ORIG_R2, offsetof(struct pt_regs, orig_r2));
  58         DEFINE(PT_R1, offsetof(struct pt_regs, r1));
  59         DEFINE(PT_R2, offsetof(struct pt_regs, r2));
  60         DEFINE(PT_R3, offsetof(struct pt_regs, r3));
  61         DEFINE(PT_R4, offsetof(struct pt_regs, r4));
  62         DEFINE(PT_R5, offsetof(struct pt_regs, r5));
  63         DEFINE(PT_R6, offsetof(struct pt_regs, r6));
  64         DEFINE(PT_R7, offsetof(struct pt_regs, r7));
  65         DEFINE(PT_R8, offsetof(struct pt_regs, r8));
  66         DEFINE(PT_R9, offsetof(struct pt_regs, r9));
  67         DEFINE(PT_R10, offsetof(struct pt_regs, r10));
  68         DEFINE(PT_R11, offsetof(struct pt_regs, r11));
  69         DEFINE(PT_R12, offsetof(struct pt_regs, r12));
  70         DEFINE(PT_R13, offsetof(struct pt_regs, r13));
  71         DEFINE(PT_R14, offsetof(struct pt_regs, r14));
  72         DEFINE(PT_R15, offsetof(struct pt_regs, r15));
  73         DEFINE(PT_EA, offsetof(struct pt_regs, ea));
  74         DEFINE(PT_RA, offsetof(struct pt_regs, ra));
  75         DEFINE(PT_FP, offsetof(struct pt_regs, fp));
  76         DEFINE(PT_SP, offsetof(struct pt_regs, sp));
  77         DEFINE(PT_GP, offsetof(struct pt_regs, gp));
  78         DEFINE(PT_ESTATUS, offsetof(struct pt_regs, estatus));
  79         DEFINE(PT_STATUS_EXTENSION, offsetof(struct pt_regs, status_extension));
  80         DEFINE(PT_REGS_SIZE, sizeof(struct pt_regs));
  81
  82         /* offsets into the switch_stack */
  83         DEFINE(SW_R16, offsetof(struct switch_stack, r16));
  84         DEFINE(SW_R17, offsetof(struct switch_stack, r17));
  85         DEFINE(SW_R18, offsetof(struct switch_stack, r18));
  86         DEFINE(SW_R19, offsetof(struct switch_stack, r19));
  87         DEFINE(SW_R20, offsetof(struct switch_stack, r20));
  88         DEFINE(SW_R21, offsetof(struct switch_stack, r21));
  89         DEFINE(SW_R22, offsetof(struct switch_stack, r22));
  90         DEFINE(SW_R23, offsetof(struct switch_stack, r23));
  91         DEFINE(SW_FP, offsetof(struct switch_stack, fp));
  92         DEFINE(SW_GP, offsetof(struct switch_stack, gp));
  93         DEFINE(SW_RA, offsetof(struct switch_stack, ra));
  94         DEFINE(SWITCH_STACK_SIZE, sizeof(struct switch_stack));
  95
  96         DEFINE(PS_S_ASM, PS_S);
  97
  98         DEFINE(NIOS2_STATUS_PIE_MSK_ASM, NIOS2_STATUS_PIE_MSK);
  99         DEFINE(NIOS2_STATUS_PIE_OFST_ASM, NIOS2_STATUS_PIE_OFST);
 100         DEFINE(NIOS2_STATUS_U_MSK_ASM, NIOS2_STATUS_U_MSK);
 101         DEFINE(NIOS2_STATUS_U_OFST_ASM, NIOS2_STATUS_U_OFST);
 102
 103         /* offsets into the kernel_stat struct */
 104         DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs));
 105
 106         /* Offsets in thread_info structure, used in assembly code */
 107         DEFINE(TI_TASK, offsetof(struct thread_info, task));
 108         DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
 109         DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
 110         DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
 111         DEFINE(TI_PREEMPT_COUNT, offsetof(struct thread_info, preempt_count));
 112
 113         DEFINE(PREEMPT_ACTIVE_ASM, PREEMPT_ACTIVE);
 114
 115         DEFINE(THREAD_SIZE_ASM, THREAD_SIZE);
 116
 117         DEFINE(TIF_SYSCALL_TRACE_ASM, TIF_SYSCALL_TRACE);
 118         DEFINE(TIF_NOTIFY_RESUME_ASM, TIF_NOTIFY_RESUME);
 119         DEFINE(TIF_SIGPENDING_ASM, TIF_SIGPENDING);
 120         DEFINE(TIF_NEED_RESCHED_ASM, TIF_NEED_RESCHED);
 121         DEFINE(TIF_POLLING_NRFLAG_ASM, TIF_POLLING_NRFLAG);
 122
 123         DEFINE(_TIF_SYSCALL_TRACE_ASM, _TIF_SYSCALL_TRACE);
 124         DEFINE(_TIF_NOTIFY_RESUME_ASM, _TIF_NOTIFY_RESUME);
 125         DEFINE(_TIF_SIGPENDING_ASM, _TIF_SIGPENDING);
 126         DEFINE(_TIF_NEED_RESCHED_ASM, _TIF_NEED_RESCHED);
 127         DEFINE(_TIF_POLLING_NRFLAG_ASM, _TIF_POLLING_NRFLAG);
 128
 129         DEFINE(_TIF_WORK_MASK_ASM, _TIF_WORK_MASK);
 130
 131 #if defined(na_flash_kernel) && defined(na_flash_kernel_end)
 132         /* the flash chip */
 133         DEFINE(NIOS_FLASH_START, na_flash_kernel);
 134         DEFINE(NIOS_FLASH_END, na_flash_kernel_end);
 135
 136         /* the kernel placement in the flash*/
 137         DEFINE(KERNEL_FLASH_START, na_flash_kernel);
 138         DEFINE(KERNEL_FLASH_LEN, 0x200000);
 139
 140         /* the romdisk placement in the flash */
 141         DEFINE(LINUX_ROMFS_START, na_flash_kernel+0x200000);
 142         DEFINE(LINUX_ROMFS_END, na_flash_kernel_end);
 143 #else
 144 #error Sorry,you dont have na_flash_kernel or na_flash_kernel_end defined in the core.
 145 #endif
 146
 147 #if defined(nasys_program_mem) && defined(nasys_program_mem_end)
 148         /* the sdram */
 149         DEFINE(LINUX_SDRAM_START, nasys_program_mem);
 150         DEFINE(LINUX_SDRAM_END, nasys_program_mem_end);
 151 #else
 152 #error Sorry,you dont have nasys_program_mem or nasys_program_mem_end defined in the core.
 153 #endif
 154
 155         DEFINE(NIOS2_ICACHE_SIZE, nasys_icache_size);
 156         DEFINE(NIOS2_ICACHE_LINE_SIZE, nasys_icache_line_size);
 157         DEFINE(NIOS2_DCACHE_SIZE, nasys_dcache_size);
 158         DEFINE(NIOS2_DCACHE_LINE_SIZE, nasys_dcache_line_size);
 159
 160 #if defined(na_enet)
 161         DEFINE(NA_ENET_ASM, na_enet);
 162 #endif
 163
 164 #if defined(na_enet_reset)
 165         DEFINE(NA_ENET_RESET_ASM, na_enet_reset);
 166 #endif
 167
 168 #if defined(na_enet_reset_n)
 169         DEFINE(NA_ENET_RESET_N_ASM, na_enet_reset_n);
 170 #endif
 171
 172 #if defined(na_ide_interface)
 173         DEFINE(NA_IDE_INTERFACE_ASM, na_ide_interface);
 174 #endif
 175
 176 #if defined(na_timer0)
 177         DEFINE(NA_TIMER0_ASM, na_timer0);
 178         DEFINE(NP_TIMERCONTROL_ASM, offsetof(np_timer, np_timercontrol));
 179         DEFINE(NP_TIMERSTATUS_ASM,  offsetof(np_timer, np_timerstatus));
 180 #endif
 181
 182 #if defined(na_uart0)
 183         DEFINE(NA_UART0_ASM, na_uart0);
 184         DEFINE(NP_UARTCONTROL_ASM,  offsetof(np_uart,  np_uartcontrol));
 185         DEFINE(NP_UARTSTATUS_ASM,   offsetof(np_uart,  np_uartstatus));
 186 #endif
 187
 188 #if defined(na_uart1)
 189         DEFINE(NA_UART1_ASM, na_uart1);
 190 #endif
 191
 192 #if defined(na_uart2)
 193         DEFINE(NA_UART2_ASM, na_uart2);
 194 #endif
 195
 196 #if defined(na_uart3)
 197         DEFINE(NA_UART3_ASM, na_uart3);
 198 #endif
 199
 200         return 0;
 201 }