diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/parisc/kernel/real2.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/kernel/real2.S | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/ANDROID_3.4.5/arch/parisc/kernel/real2.S b/ANDROID_3.4.5/arch/parisc/kernel/real2.S deleted file mode 100644 index 5f3d3a1f..00000000 --- a/ANDROID_3.4.5/arch/parisc/kernel/real2.S +++ /dev/null @@ -1,304 +0,0 @@ -/* - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2000 Hewlett Packard (Paul Bame bame@puffin.external.hp.com) - * - */ - -#include <asm/pdc.h> -#include <asm/psw.h> -#include <asm/assembly.h> -#include <asm/asm-offsets.h> - -#include <linux/linkage.h> - - - .section .bss - - .export pdc_result - .export pdc_result2 - .align 8 -pdc_result: - .block ASM_PDC_RESULT_SIZE -pdc_result2: - .block ASM_PDC_RESULT_SIZE - - .export real_stack - .export real32_stack - .export real64_stack - .align 64 -real_stack: -real32_stack: -real64_stack: - .block 8192 - -#ifdef CONFIG_64BIT -# define REG_SZ 8 -#else -# define REG_SZ 4 -#endif - -#define N_SAVED_REGS 9 - -save_cr_space: - .block REG_SZ * N_SAVED_REGS -save_cr_end: - - -/************************ 32-bit real-mode calls ***********************/ -/* This can be called in both narrow and wide kernels */ - - .text - - /* unsigned long real32_call_asm(unsigned int *sp, - * unsigned int *arg0p, - * unsigned int iodc_fn) - * sp is value of stack pointer to adopt before calling PDC (virt) - * arg0p points to where saved arg values may be found - * iodc_fn is the IODC function to call - */ - -ENTRY(real32_call_asm) - STREG %rp, -RP_OFFSET(%sp) /* save RP */ -#ifdef CONFIG_64BIT - callee_save - ldo 2*REG_SZ(%sp), %sp /* room for a couple more saves */ - STREG %r27, -1*REG_SZ(%sp) - STREG %r29, -2*REG_SZ(%sp) -#endif - STREG %sp, -REG_SZ(%arg0) /* save SP on real-mode stack */ - copy %arg0, %sp /* adopt the real-mode SP */ - - /* save iodc_fn */ - copy %arg2, %r31 - - /* load up the arg registers from the saved arg area */ - /* 32-bit calling convention passes first 4 args in registers */ - ldw 0(%arg1), %arg0 /* note overwriting arg0 */ - ldw -8(%arg1), %arg2 - ldw -12(%arg1), %arg3 - ldw -4(%arg1), %arg1 /* obviously must do this one last! */ - - tophys_r1 %sp - - b,l rfi_virt2real,%r2 - nop - - b,l save_control_regs,%r2 /* modifies r1, r2, r28 */ - nop - -#ifdef CONFIG_64BIT - rsm PSW_SM_W, %r0 /* go narrow */ -#endif - - load32 PA(ric_ret), %r2 - bv 0(%r31) - nop -ric_ret: -#ifdef CONFIG_64BIT - ssm PSW_SM_W, %r0 /* go wide */ -#endif - /* restore CRs before going virtual in case we page fault */ - b,l restore_control_regs, %r2 /* modifies r1, r2, r26 */ - nop - - b,l rfi_real2virt,%r2 - nop - - tovirt_r1 %sp - LDREG -REG_SZ(%sp), %sp /* restore SP */ -#ifdef CONFIG_64BIT - LDREG -1*REG_SZ(%sp), %r27 - LDREG -2*REG_SZ(%sp), %r29 - ldo -2*REG_SZ(%sp), %sp - callee_rest -#endif - LDREG -RP_OFFSET(%sp), %rp /* restore RP */ - bv 0(%rp) - nop -ENDPROC(real32_call_asm) - - -# define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where) -# define POP_CR(r, where) LDREG,mb -REG_SZ(where), %r1 ! mtctl %r1, r - - .text -save_control_regs: - load32 PA(save_cr_space), %r28 - PUSH_CR(%cr24, %r28) - PUSH_CR(%cr25, %r28) - PUSH_CR(%cr26, %r28) - PUSH_CR(%cr27, %r28) - PUSH_CR(%cr28, %r28) - PUSH_CR(%cr29, %r28) - PUSH_CR(%cr30, %r28) - PUSH_CR(%cr31, %r28) - PUSH_CR(%cr15, %r28) - bv 0(%r2) - nop - -restore_control_regs: - load32 PA(save_cr_end), %r26 - POP_CR(%cr15, %r26) - POP_CR(%cr31, %r26) - POP_CR(%cr30, %r26) - POP_CR(%cr29, %r26) - POP_CR(%cr28, %r26) - POP_CR(%cr27, %r26) - POP_CR(%cr26, %r26) - POP_CR(%cr25, %r26) - POP_CR(%cr24, %r26) - bv 0(%r2) - nop - -/* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for - * more general-purpose use by the several places which need RFIs - */ - .text - .align 128 -rfi_virt2real: - /* switch to real mode... */ - rsm PSW_SM_I,%r0 - load32 PA(rfi_v2r_1), %r1 - nop - nop - nop - nop - nop - - rsm PSW_SM_Q,%r0 /* disable Q & I bits to load iia queue */ - mtctl %r0, %cr17 /* Clear IIASQ tail */ - mtctl %r0, %cr17 /* Clear IIASQ head */ - mtctl %r1, %cr18 /* IIAOQ head */ - ldo 4(%r1), %r1 - mtctl %r1, %cr18 /* IIAOQ tail */ - load32 REAL_MODE_PSW, %r1 - mtctl %r1, %cr22 - rfi - - nop - nop - nop - nop - nop - nop - nop - nop -rfi_v2r_1: - tophys_r1 %r2 - bv 0(%r2) - nop - - .text - .align 128 -rfi_real2virt: - rsm PSW_SM_I,%r0 - load32 (rfi_r2v_1), %r1 - nop - nop - nop - nop - nop - - rsm PSW_SM_Q,%r0 /* disable Q bit to load iia queue */ - mtctl %r0, %cr17 /* Clear IIASQ tail */ - mtctl %r0, %cr17 /* Clear IIASQ head */ - mtctl %r1, %cr18 /* IIAOQ head */ - ldo 4(%r1), %r1 - mtctl %r1, %cr18 /* IIAOQ tail */ - load32 KERNEL_PSW, %r1 - mtctl %r1, %cr22 - rfi - - nop - nop - nop - nop - nop - nop - nop - nop -rfi_r2v_1: - tovirt_r1 %r2 - bv 0(%r2) - nop - -#ifdef CONFIG_64BIT - -/************************ 64-bit real-mode calls ***********************/ -/* This is only usable in wide kernels right now and will probably stay so */ - .text - /* unsigned long real64_call_asm(unsigned long *sp, - * unsigned long *arg0p, - * unsigned long fn) - * sp is value of stack pointer to adopt before calling PDC (virt) - * arg0p points to where saved arg values may be found - * iodc_fn is the IODC function to call - */ -ENTRY(real64_call_asm) - std %rp, -0x10(%sp) /* save RP */ - std %sp, -8(%arg0) /* save SP on real-mode stack */ - copy %arg0, %sp /* adopt the real-mode SP */ - - /* save fn */ - copy %arg2, %r31 - - /* set up the new ap */ - ldo 64(%arg1), %r29 - - /* load up the arg registers from the saved arg area */ - /* 32-bit calling convention passes first 4 args in registers */ - ldd 0*REG_SZ(%arg1), %arg0 /* note overwriting arg0 */ - ldd 2*REG_SZ(%arg1), %arg2 - ldd 3*REG_SZ(%arg1), %arg3 - ldd 4*REG_SZ(%arg1), %r22 - ldd 5*REG_SZ(%arg1), %r21 - ldd 6*REG_SZ(%arg1), %r20 - ldd 7*REG_SZ(%arg1), %r19 - ldd 1*REG_SZ(%arg1), %arg1 /* do this one last! */ - - tophys_r1 %sp - - b,l rfi_virt2real,%r2 - nop - - b,l save_control_regs,%r2 /* modifies r1, r2, r28 */ - nop - - load32 PA(r64_ret), %r2 - bv 0(%r31) - nop -r64_ret: - /* restore CRs before going virtual in case we page fault */ - b,l restore_control_regs, %r2 /* modifies r1, r2, r26 */ - nop - - b,l rfi_real2virt,%r2 - nop - - tovirt_r1 %sp - ldd -8(%sp), %sp /* restore SP */ - ldd -0x10(%sp), %rp /* restore RP */ - bv 0(%rp) - nop -ENDPROC(real64_call_asm) - -#endif - - .text - /* http://lists.parisc-linux.org/hypermail/parisc-linux/10916.html - ** GCC 3.3 and later has a new function in libgcc.a for - ** comparing function pointers. - */ -ENTRY(__canonicalize_funcptr_for_compare) -#ifdef CONFIG_64BIT - bve (%r2) -#else - bv %r0(%r2) -#endif - copy %r26,%r28 -ENDPROC(__canonicalize_funcptr_for_compare) - |