summaryrefslogtreecommitdiff
path: root/arch/mips/include/asm/processor.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/include/asm/processor.h')
-rw-r--r--arch/mips/include/asm/processor.h89
1 files changed, 34 insertions, 55 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 95b8c471f572..ca7662cc65a7 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -13,6 +13,7 @@
#include <linux/atomic.h>
#include <linux/cpumask.h>
+#include <linux/sizes.h>
#include <linux/threads.h>
#include <asm/cachectl.h>
@@ -21,34 +22,21 @@
#include <asm/dsemul.h>
#include <asm/mipsregs.h>
#include <asm/prefetch.h>
-
-/*
- * Return current * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+#include <asm/vdso/processor.h>
/*
* System setup and hardware flags..
*/
extern unsigned int vced_count, vcei_count;
-
-/*
- * MIPS does have an arch_pick_mmap_layout()
- */
-#define HAVE_ARCH_PICK_MMAP_LAYOUT 1
+extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
#ifdef CONFIG_32BIT
-#ifdef CONFIG_KVM_GUEST
-/* User space process size is limited to 1GB in KVM Guest Mode */
-#define TASK_SIZE 0x3fff8000UL
-#else
/*
* User space process size: 2GB. This is hardcoded into a few places,
* so don't change it unless you know what you are doing.
*/
#define TASK_SIZE 0x80000000UL
-#endif
#define STACK_TOP_MAX TASK_SIZE
@@ -80,11 +68,10 @@ extern unsigned int vced_count, vcei_count;
#endif
-/*
- * One page above the stack is used for branch delay slot "emulation".
- * See dsemul.c for details.
- */
-#define STACK_TOP ((TASK_SIZE & PAGE_MASK) - PAGE_SIZE)
+#define VDSO_RANDOMIZE_SIZE (TASK_IS_32BIT_ADDR ? SZ_1M : SZ_64M)
+
+extern unsigned long mips_stack_top(void);
+#define STACK_TOP mips_stack_top()
/*
* This decides where the kernel will search for a free chunk of vm
@@ -141,7 +128,7 @@ struct mips_fpu_struct {
#define NUM_DSP_REGS 6
-typedef __u32 dspreg_t;
+typedef unsigned long dspreg_t;
struct mips_dsp_state {
dspreg_t dspr[NUM_DSP_REGS];
@@ -215,29 +202,17 @@ struct octeon_cop2_state {
#define COP2_INIT \
.cp2 = {0,},
+#if defined(CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE) && \
+ CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
struct octeon_cvmseg_state {
unsigned long cvmseg[CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE]
[cpu_dcache_line_size() / sizeof(unsigned long)];
};
-
-#elif defined(CONFIG_CPU_XLP)
-struct nlm_cop2_state {
- u64 rx[4];
- u64 tx[4];
- u32 tx_msg_status;
- u32 rx_msg_status;
-};
-
-#define COP2_INIT \
- .cp2 = {{0}, {0}, 0, 0},
+#endif
#else
#define COP2_INIT
#endif
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
#ifdef CONFIG_CPU_HAS_MSA
# define ARCH_MIN_TASKALIGN 16
# define FPU_ALIGN __aligned(16)
@@ -260,6 +235,7 @@ struct thread_struct {
/* Saved cp0 stuff. */
unsigned long cp0_status;
+#ifdef CONFIG_MIPS_FP_SUPPORT
/* Saved fpu/fpu emulator stuff. */
struct mips_fpu_struct fpu FPU_ALIGN;
/* Assigned branch delay slot 'emulation' frame */
@@ -268,6 +244,7 @@ struct thread_struct {
unsigned long bd_emu_branch_pc;
/* PC to continue from following a branch delay slot 'emulation' */
unsigned long bd_emu_cont_pc;
+#endif
#ifdef CONFIG_MIPS_MT_FPAFF
/* Emulated instruction count */
unsigned long emulated_fp;
@@ -288,10 +265,10 @@ struct thread_struct {
unsigned long trap_nr;
#ifdef CONFIG_CPU_CAVIUM_OCTEON
struct octeon_cop2_state cp2 __attribute__ ((__aligned__(128)));
+#if defined(CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE) && \
+ CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
struct octeon_cvmseg_state cvmseg __attribute__ ((__aligned__(128)));
#endif
-#ifdef CONFIG_CPU_XLP
- struct nlm_cop2_state cp2;
#endif
struct mips_abi *abi;
};
@@ -304,6 +281,21 @@ struct thread_struct {
#define FPAFF_INIT
#endif /* CONFIG_MIPS_MT_FPAFF */
+#ifdef CONFIG_MIPS_FP_SUPPORT
+# define FPU_INIT \
+ .fpu = { \
+ .fpr = {{{0,},},}, \
+ .fcr31 = 0, \
+ .msacsr = 0, \
+ }, \
+ /* Delay slot emulation */ \
+ .bd_emu_frame = ATOMIC_INIT(BD_EMUFRAME_NONE), \
+ .bd_emu_branch_pc = 0, \
+ .bd_emu_cont_pc = 0,
+#else
+# define FPU_INIT
+#endif
+
#define INIT_THREAD { \
/* \
* Saved main processor registers \
@@ -326,19 +318,11 @@ struct thread_struct {
/* \
* Saved FPU/FPU emulator stuff \
*/ \
- .fpu = { \
- .fpr = {{{0,},},}, \
- .fcr31 = 0, \
- .msacsr = 0, \
- }, \
+ FPU_INIT \
/* \
* FPU affinity state (null if not FPAFF) \
*/ \
FPAFF_INIT \
- /* Delay slot emulation */ \
- .bd_emu_frame = ATOMIC_INIT(BD_EMUFRAME_NONE), \
- .bd_emu_branch_pc = 0, \
- .bd_emu_cont_pc = 0, \
/* \
* Saved DSP stuff \
*/ \
@@ -365,11 +349,6 @@ struct thread_struct {
struct task_struct;
-/* Free all resources held by a thread. */
-#define release_thread(thread) do { } while(0)
-
-extern unsigned long thread_saved_pc(struct task_struct *tsk);
-
/*
* Do necessary setup to start up a newly executed thread.
*/
@@ -379,7 +358,7 @@ static inline void flush_thread(void)
{
}
-unsigned long get_wchan(struct task_struct *p);
+unsigned long __get_wchan(struct task_struct *p);
#define __KSTK_TOS(tsk) ((unsigned long)task_stack_page(tsk) + \
THREAD_SIZE - 32 - sizeof(struct pt_regs))
@@ -388,8 +367,6 @@ unsigned long get_wchan(struct task_struct *p);
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
#define KSTK_STATUS(tsk) (task_pt_regs(tsk)->cp0_status)
-#define cpu_relax() barrier()
-
/*
* Return_address is a replacement for __builtin_return_address(count)
* which on certain architectures cannot reasonably be implemented in GCC
@@ -425,4 +402,6 @@ extern int mips_set_process_fp_mode(struct task_struct *task,
#define GET_FP_MODE(task) mips_get_process_fp_mode(task)
#define SET_FP_MODE(task,value) mips_set_process_fp_mode(task, value)
+void show_registers(struct pt_regs *regs);
+
#endif /* _ASM_PROCESSOR_H */
generated by cgit (git 2.34.1) at 2025-12-24 19:50:27 +0000