regression: elf loading

[lunaix-os.git] / lunaix-os / kernel / asm / x86 / interrupt.S

diff --git a/lunaix-os/kernel/asm/x86/interrupt.S b/lunaix-os/kernel/asm/x86/interrupt.S
index b4ce936b91ab5ed24a7f14dbe10a098a1a431c0f..2961f3b7d89f50a8f01677abbf1d452bc972b323 100644 (file)
--- a/lunaix-os/kernel/asm/x86/interrupt.S
+++ b/lunaix-os/kernel/asm/x86/interrupt.S
@@ -4,17 +4,6 @@
 #include <lunaix/syscall.h>
 #define __ASM_INTR_DIAGNOSIS
 
 #include <lunaix/syscall.h>
 #define __ASM_INTR_DIAGNOSIS
 

-.macro isr_template vector, no_error_code=1
-    .global _asm_isr\vector
-    .type _asm_isr\vector, @function
-    _asm_isr\vector:
-        .if \no_error_code
-            pushl $0x0
-        .endif
-        pushl $\vector
-        jmp interrupt_wrapper
-.endm
-

 #ifdef __ASM_INTR_DIAGNOSIS
 .section .bss
     .global debug_resv
 #ifdef __ASM_INTR_DIAGNOSIS
 .section .bss
     .global debug_resv


@@ -29,24 +18,7 @@
     tmp_stack:
 
 .section .text
     tmp_stack:
 
 .section .text

-    isr_template FAULT_DIVISION_ERROR
-    isr_template FAULT_GENERAL_PROTECTION, no_error_code=0
-    isr_template FAULT_PAGE_FAULT, no_error_code=0
-    isr_template FAULT_STACK_SEG_FAULT, no_error_code=0
-
-    isr_template LUNAIX_SYS_PANIC
-    isr_template LUNAIX_SYS_CALL
-    isr_template LUNAIX_SCHED
-
-    isr_template APIC_ERROR_IV
-    isr_template APIC_LINT0_IV
-    isr_template APIC_TIMER_IV
-    isr_template APIC_SPIV_IV
-    isr_template RTC_TIMER_IV
-    
-    isr_template PC_KBD_IV
-    isr_template AHCI_HBA_IV
-
+    .global interrupt_wrapper

     interrupt_wrapper:
         /*
          Stack layout (layout of struct isr_param)
     interrupt_wrapper:
         /*
          Stack layout (layout of struct isr_param)


@@ -102,7 +74,12 @@
 
         # 保存用户栈顶指针。这是因为我们允许系统调用内进行上下文切换，而这样一来，我们就失去了用户栈的信息，
         # 这样一来，就无法设置信号上下文。这主要是为了实现了pause()而做的准备
 
         # 保存用户栈顶指针。这是因为我们允许系统调用内进行上下文切换，而这样一来，我们就失去了用户栈的信息，
         # 这样一来，就无法设置信号上下文。这主要是为了实现了pause()而做的准备

-        movl (__current), %eax  
+        movl (__current), %eax
+
+        # 保存x87FPU的状态
+        movl 92(%eax), %ebx
+        fxsave (%ebx)
+

         movl 68(%esp), %ebx     # 取出esp
         movl %ebx, 84(%eax)     # 存入__current->ustack_top
 
         movl 68(%esp), %ebx     # 取出esp
         movl %ebx, 84(%eax)     # 存入__current->ustack_top
 


@@ -125,7 +102,13 @@
         movl 56(%esp), %eax
         movl %eax, (debug_resv + 4)
 #endif
         movl 56(%esp), %eax
         movl %eax, (debug_resv + 4)
 #endif

-
+        movl (__current), %eax
+        movl 92(%eax), %eax
+        
+        test %eax, %eax     # do we have stored x87 context?
+        jz 1f 
+        fxrstor (%eax)      
+1:

         popl %eax
         popl %ebx
         popl %ecx
         popl %eax
         popl %ebx
         popl %ecx


@@ -196,9 +179,9 @@
         # 注意2：handle_signal在调用之前，须确保proc_sig已经写入用户栈！
         leal 8(%eax), %ebx      # arg1 in %eax: addr of proc_sig structure in user stack
 
         # 注意2：handle_signal在调用之前，须确保proc_sig已经写入用户栈！
         leal 8(%eax), %ebx      # arg1 in %eax: addr of proc_sig structure in user stack
 

-        pushl $UDATA_SEG        # proc_sig->prev_context.ss
+        pushl $UDATA_SEG        # proc_sig->prev_context.proc_regs.ss

         pushl %eax              # esp
         pushl %eax              # esp

-        pushl 64(%ebx)          # proc_sig->prev_context.eflags
+        pushl 64(%ebx)          # proc_sig->prev_context.proc_regs.eflags

         pushl $UCODE_SEG        # cs
         pushl $sig_wrapper      # eip for sig wrapper
 
         pushl $UCODE_SEG        # cs
         pushl $sig_wrapper      # eip for sig wrapper