[PARISC] implement standard ENTRY(), END() and ENDPROC()
Use the macros in entry.S Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Helge Deller
Kyle McMartin
Родитель
430a502abe
Коммит
c5e7655297
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@ -37,6 +37,8 @@
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#include <asm/unistd.h>
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#include <asm/thread_info.h>
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#include <linux/linkage.h>
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#ifdef CONFIG_64BIT
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#define CMPIB cmpib,*
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#define CMPB cmpb,*
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@ -648,13 +650,11 @@
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* the static part of the kernel address space.
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*/
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.export fault_vector_20
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.text
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.align 4096
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fault_vector_20:
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ENTRY(fault_vector_20)
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/* First vector is invalid (0) */
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.ascii "cows can fly"
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.byte 0
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@ -695,14 +695,13 @@ fault_vector_20:
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def 29
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def 30
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def 31
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END(fault_vector_20)
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#ifndef CONFIG_64BIT
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.export fault_vector_11
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.align 2048
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fault_vector_11:
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ENTRY(fault_vector_11)
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/* First vector is invalid (0) */
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.ascii "cows can fly"
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.byte 0
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@ -743,6 +742,7 @@ fault_vector_11:
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def 29
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def 30
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def 31
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END(fault_vector_11)
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#endif
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@ -762,9 +762,8 @@ fault_vector_11:
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#define CLONE_VM 0x100 /* Must agree with <linux/sched.h> */
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#define CLONE_UNTRACED 0x00800000
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.export __kernel_thread, code
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.import do_fork
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__kernel_thread:
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ENTRY(__kernel_thread)
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STREG %r2, -RP_OFFSET(%r30)
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copy %r30, %r1
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@ -797,6 +796,7 @@ __kernel_thread:
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ldo -PT_SZ_ALGN(%r30), %r30
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bv %r0(%r2)
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nop
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ENDPROC(__kernel_thread)
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/*
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* Child Returns here
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@ -805,8 +805,7 @@ __kernel_thread:
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* into task save area.
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*/
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.export ret_from_kernel_thread
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ret_from_kernel_thread:
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ENTRY(ret_from_kernel_thread)
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/* Call schedule_tail first though */
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BL schedule_tail, %r2
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@ -833,10 +832,10 @@ ret_from_kernel_thread:
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bv %r0(%r1)
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#endif
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ldi 0, %r26
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ENDPROC(ret_from_kernel_thread)
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.import sys_execve, code
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.export __execve, code
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__execve:
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ENTRY(__execve)
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copy %r2, %r15
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copy %r30, %r16
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ldo PT_SZ_ALGN(%r30), %r30
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@ -856,16 +855,15 @@ __execve:
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copy %r16, %r30
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bv %r0(%r2)
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nop
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ENDPROC(__execve)
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.align 4
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/*
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* struct task_struct *_switch_to(struct task_struct *prev,
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* struct task_struct *next)
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*
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* switch kernel stacks and return prev */
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.export _switch_to, code
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_switch_to:
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ENTRY(_switch_to)
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STREG %r2, -RP_OFFSET(%r30)
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callee_save_float
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@ -890,6 +888,7 @@ _switch_to_ret:
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LDREG -RP_OFFSET(%r30), %r2
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bv %r0(%r2)
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copy %r26, %r28
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ENDPROC(_switch_to)
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/*
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* Common rfi return path for interruptions, kernel execve, and
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@ -907,8 +906,7 @@ _switch_to_ret:
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.align 4096
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.export syscall_exit_rfi
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syscall_exit_rfi:
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ENTRY(syscall_exit_rfi)
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mfctl %cr30,%r16
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LDREG TI_TASK(%r16), %r16 /* thread_info -> task_struct */
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ldo TASK_REGS(%r16),%r16
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@ -1140,13 +1138,12 @@ intr_extint:
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b do_cpu_irq_mask
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ldo R%intr_return(%r2), %r2 /* return to intr_return, not here */
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ENDPROC(syscall_exit_rfi)
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/* Generic interruptions (illegal insn, unaligned, page fault, etc) */
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.export intr_save, code /* for os_hpmc */
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intr_save:
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ENTRY(intr_save) /* for os_hpmc */
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mfsp %sr7,%r16
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CMPIB=,n 0,%r16,1f
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get_stack_use_cr30
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@ -1221,6 +1218,7 @@ skip_save_ior:
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b handle_interruption
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ldo R%intr_check_sig(%r2), %r2
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ENDPROC(intr_save)
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/*
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@ -1806,9 +1804,7 @@ dtlb_fault:
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LDREG PT_GR18(\regs),%r18
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.endm
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.export sys_fork_wrapper
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.export child_return
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sys_fork_wrapper:
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ENTRY(sys_fork_wrapper)
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
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ldo TASK_REGS(%r1),%r1
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reg_save %r1
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@ -1845,9 +1841,10 @@ wrapper_exit:
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ldi __NR_fork,%r20
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bv %r0(%r2)
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STREG %r20,PT_GR20(%r1)
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ENDPROC(sys_fork_wrapper)
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/* Set the return value for the child */
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child_return:
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ENTRY(child_return)
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BL schedule_tail, %r2
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nop
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@ -1855,10 +1852,10 @@ child_return:
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LDREG TASK_PT_GR19(%r1),%r2
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b wrapper_exit
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copy %r0,%r28
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ENDPROC(child_return)
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.export sys_clone_wrapper
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sys_clone_wrapper:
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ENTRY(sys_clone_wrapper)
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
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ldo TASK_REGS(%r1),%r1 /* get pt regs */
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reg_save %r1
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@ -1879,9 +1876,10 @@ sys_clone_wrapper:
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b wrapper_exit
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LDREG -RP_OFFSET-FRAME_SIZE(%r30),%r2
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ENDPROC(sys_clone_wrapper)
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.export sys_vfork_wrapper
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sys_vfork_wrapper:
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ENTRY(sys_vfork_wrapper)
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
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ldo TASK_REGS(%r1),%r1 /* get pt regs */
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reg_save %r1
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@ -1902,6 +1900,7 @@ sys_vfork_wrapper:
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b wrapper_exit
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LDREG -RP_OFFSET-FRAME_SIZE(%r30),%r2
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ENDPROC(sys_vfork_wrapper)
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.macro execve_wrapper execve
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@ -1938,22 +1937,19 @@ error_\execve:
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nop
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.endm
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.export sys_execve_wrapper
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.import sys_execve
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sys_execve_wrapper:
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ENTRY(sys_execve_wrapper)
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execve_wrapper sys_execve
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ENDPROC(sys_execve_wrapper)
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#ifdef CONFIG_64BIT
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.export sys32_execve_wrapper
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.import sys32_execve
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sys32_execve_wrapper:
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ENTRY(sys32_execve_wrapper)
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execve_wrapper sys32_execve
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ENDPROC(sys32_execve_wrapper)
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#endif
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.export sys_rt_sigreturn_wrapper
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sys_rt_sigreturn_wrapper:
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ENTRY(sys_rt_sigreturn_wrapper)
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r26
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ldo TASK_REGS(%r26),%r26 /* get pt regs */
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/* Don't save regs, we are going to restore them from sigcontext. */
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@ -1981,9 +1977,9 @@ sys_rt_sigreturn_wrapper:
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*/
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bv %r0(%r2)
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LDREG PT_GR28(%r1),%r28 /* reload original r28 for syscall_exit */
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ENDPROC(sys_rt_sigreturn_wrapper)
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.export sys_sigaltstack_wrapper
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sys_sigaltstack_wrapper:
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ENTRY(sys_sigaltstack_wrapper)
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/* Get the user stack pointer */
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
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ldo TASK_REGS(%r1),%r24 /* get pt regs */
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LDREG -RP_OFFSET(%r30), %r2
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bv %r0(%r2)
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nop
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ENDPROC(sys_sigaltstack_wrapper)
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#ifdef CONFIG_64BIT
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.export sys32_sigaltstack_wrapper
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sys32_sigaltstack_wrapper:
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ENTRY(sys32_sigaltstack_wrapper)
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/* Get the user stack pointer */
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LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r24
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LDREG TASK_PT_GR30(%r24),%r24
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@ -2018,11 +2014,10 @@ sys32_sigaltstack_wrapper:
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LDREG -RP_OFFSET(%r30), %r2
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bv %r0(%r2)
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nop
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ENDPROC(sys32_sigaltstack_wrapper)
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#endif
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.export syscall_exit
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syscall_exit:
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ENTRY(syscall_exit)
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/* NOTE: HP-UX syscalls also come through here
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* after hpux_syscall_exit fixes up return
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* values. */
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@ -2251,7 +2246,10 @@ syscall_do_resched:
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#endif
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b syscall_check_bh /* if resched, we start over again */
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nop
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ENDPROC(syscall_exit)
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ENTRY(get_register)
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/*
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* get_register is used by the non access tlb miss handlers to
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* copy the value of the general register specified in r8 into
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* a -1 in it, but that is OK, it just means that we will have
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* to use the slow path instead).
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*/
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get_register:
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blr %r8,%r0
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nop
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bv %r0(%r25) /* r0 */
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@ -2330,14 +2326,15 @@ get_register:
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copy %r30,%r1
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bv %r0(%r25) /* r31 */
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copy %r31,%r1
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ENDPROC(get_register)
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ENTRY(set_register)
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/*
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* set_register is used by the non access tlb miss handlers to
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* copy the value of r1 into the general register specified in
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* r8.
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*/
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set_register:
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blr %r8,%r0
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nop
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bv %r0(%r25) /* r0 (silly, but it is a place holder) */
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@ -2404,3 +2401,5 @@ set_register:
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copy %r1,%r30
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bv %r0(%r25) /* r31 */
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copy %r1,%r31
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ENDPROC(set_register)
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@ -1,6 +1,18 @@
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#ifndef __ASM_LINKAGE_H
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#define __ASM_LINKAGE_H
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/* Nothing to see here... */
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#ifndef __ASM_PARISC_LINKAGE_H
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#define __ASM_PARISC_LINKAGE_H
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#ifndef __ALIGN
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#define __ALIGN .align 4
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#define __ALIGN_STR ".align 4"
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#endif
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/*
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* In parisc assembly a semicolon marks a comment.
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* Because of that we use an exclamation mark to seperate independend lines.
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*/
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#define ENTRY(name) \
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.globl name !\
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ALIGN !\
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name:
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#endif /* __ASM_PARISC_LINKAGE_H */
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