From 67a2288991ce3662a588ee83c0bea9c9efae5f1e Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 23 Jul 1998 22:02:34 +0000 Subject: Patch from Eric VALETTE : Here is a enhanced version of my previous patch. This patch enables to potentially share the new interrupt management code for all Intel targets (pc386, go32 and force386) bsp. Note : this patch is complete only for pc386. It still needs to be completed for go32 and force386. I carrefully checked that anything needed is in for force386 (only some function name changes for IDT manipulation and GDT segment manipulation). But anyway I will not be able to test any of theses targets... --- cpukit/score/cpu/i386/cpu.c | 99 --------------------------------------------- 1 file changed, 99 deletions(-) (limited to 'cpukit/score/cpu/i386') diff --git a/cpukit/score/cpu/i386/cpu.c b/cpukit/score/cpu/i386/cpu.c index 2ad1528a89..abdb3f2702 100644 --- a/cpukit/score/cpu/i386/cpu.c +++ b/cpukit/score/cpu/i386/cpu.c @@ -76,102 +76,3 @@ unsigned32 _CPU_ISR_Get_level( void ) return level; } -/*PAGE - * - * _CPU_ISR_install_raw_handler - */ - -#if __GO32__ -#include -#include -#endif /* __GO32__ */ - -void _CPU_ISR_install_raw_handler( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ -#if __GO32__ - _go32_dpmi_seginfo handler_info; - - /* get the address of the old handler */ - _go32_dpmi_get_protected_mode_interrupt_vector( vector, &handler_info); - - /* Notice how we're failing to save the pm_segment portion of the */ - /* structure here? That means we might crash the system if we */ - /* try to restore the ISR. Can't fix this until i386_isr is */ - /* redefined. XXX [BHC]. */ - *old_handler = (proc_ptr *) handler_info.pm_offset; - - handler_info.pm_offset = (u_long) new_handler; - handler_info.pm_selector = _go32_my_cs(); - - /* install the IDT entry */ - _go32_dpmi_set_protected_mode_interrupt_vector( vector, &handler_info ); -#else - i386_IDT_slot idt; - unsigned32 handler; - - *old_handler = 0; /* XXX not supported */ - - handler = (unsigned32) new_handler; - - /* build the IDT entry */ - idt.offset_0_15 = handler & 0xffff; - idt.segment_selector = i386_get_cs(); - idt.reserved = 0x00; - idt.p_dpl = 0x8e; /* present, ISR */ - idt.offset_16_31 = handler >> 16; - - /* install the IDT entry */ - i386_Install_idt( - (unsigned32) &idt, - _CPU_Table.interrupt_table_segment, - (unsigned32) _CPU_Table.interrupt_table_offset + (8 * vector) - ); -#endif -} - -/*PAGE - * - * _CPU_ISR_install_vector - * - * This kernel routine installs the RTEMS handler for the - * specified vector. - * - * Input parameters: - * vector - interrupt vector number - * old_handler - former ISR for this vector number - * new_handler - replacement ISR for this vector number - * - * Output parameters: NONE - * - */ - -void _ISR_Handler_0(), _ISR_Handler_1(); - -#define PER_ISR_ENTRY \ - (((unsigned32) _ISR_Handler_1 - (unsigned32) _ISR_Handler_0)) - -#define _Interrupt_Handler_entry( _vector ) \ - (((unsigned32)_ISR_Handler_0) + ((_vector) * PER_ISR_ENTRY)) - -void _CPU_ISR_install_vector( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ - proc_ptr ignored; - unsigned32 unique_handler; - - *old_handler = _ISR_Vector_table[ vector ]; - - /* calculate the unique entry point for this vector */ - unique_handler = _Interrupt_Handler_entry( vector ); - - _CPU_ISR_install_raw_handler( vector, (void *)unique_handler, &ignored ); - - _ISR_Vector_table[ vector ] = new_handler; -} -- cgit v1.2.3