Changeset 8d25b44 in mainline

Timestamp:

2006-03-20T10:51:57Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1b109cb

Parents:

ad64a2d

Message:

Allowed saving less registers.

Files:

• Makefile (modified) (1 diff)
• arch/amd64/src/asm_utils.S (modified) (5 diffs)
• arch/mips32/src/start.S (modified) (4 diffs)
• kernel.config (modified) (1 diff)

Makefile

@@ -75 +75 @@
 ifeq ($(CONFIG_FPU_LAZY),y)
         DEFS += -DCONFIG_FPU_LAZY
+endif
+ifeq ($(CONFIG_DEBUG_ALLREGS),y)
+        DEFS += -DCONFIG_DEBUG_ALLREGS
 endif
 

arch/amd64/src/asm_utils.S

@@ -122 +122 @@
 # Push all general purpose registers on stack except %rbp, %rsp
 .macro save_all_gpr
-        movq %rbp, IOFFSET_RBP(%rsp)
         movq %rax, IOFFSET_RAX(%rsp)
-        movq %rbx, IOFFSET_RBX(%rsp)
         movq %rcx, IOFFSET_RCX(%rsp)
         movq %rdx, IOFFSET_RDX(%rsp)
@@ -133 +131 @@
         movq %r10, IOFFSET_R10(%rsp)
         movq %r11, IOFFSET_R11(%rsp)
+#ifdef CONFIG_DEBUG_ALLREGS     
+        movq %rbx, IOFFSET_RBX(%rsp)
+        movq %rbp, IOFFSET_RBP(%rsp)
         movq %r12, IOFFSET_R12(%rsp)
         movq %r13, IOFFSET_R13(%rsp)
         movq %r14, IOFFSET_R14(%rsp)
         movq %r15, IOFFSET_R15(%rsp)
+#endif
 .endm
 
 .macro restore_all_gpr
-        movq IOFFSET_RBP(%rsp), %rbp
         movq IOFFSET_RAX(%rsp), %rax
-        movq IOFFSET_RBX(%rsp), %rbx
         movq IOFFSET_RCX(%rsp), %rcx
         movq IOFFSET_RDX(%rsp), %rdx
@@ -151 +151 @@
         movq IOFFSET_R10(%rsp), %r10
         movq IOFFSET_R11(%rsp), %r11
+#ifdef CONFIG_DEBUG_ALLREGS     
+        movq IOFFSET_RBX(%rsp), %rbx
+        movq IOFFSET_RBP(%rsp), %rbp
         movq IOFFSET_R12(%rsp), %r12
         movq IOFFSET_R13(%rsp), %r13
         movq IOFFSET_R14(%rsp), %r14
         movq IOFFSET_R15(%rsp), %r15
+#endif
 .endm
 
+#ifdef CONFIG_DEBUG_ALLREGS
+# define INTERRUPT_ALIGN 256
+#else
+# define INTERRUPT_ALIGN 128
+#endif
+        
 ## Declare interrupt handlers
 #
@@ -181 +191 @@
                          */
                         subq $IREGISTER_SPACE, %rsp
-                        nop
-                        nop
-                        nop
                 .else
                         /*
@@ -208 +215 @@
         iretq
 
+        .align INTERRUPT_ALIGN
         .if (\n-\i)-1
         handler "(\i+1)",\n
         .endif
 .endm
-        
+
+.align INTERRUPT_ALIGN
 interrupt_handlers:
 h_start:

arch/mips32/src/start.S

@@ -70 +70 @@
         sw $at, EOFFSET_HI(\r)
         
+#ifdef CONFIG_DEBUG_ALLREGS     
         sw $s0,EOFFSET_S0(\r)
         sw $s1,EOFFSET_S1(\r)
@@ -78 +79 @@
         sw $s6,EOFFSET_S6(\r)
         sw $s7,EOFFSET_S7(\r)
-        sw $s8,EOFFSET_S8(\r)   
+        sw $s8,EOFFSET_S8(\r)
+#endif
+        
         sw $gp,EOFFSET_GP(\r)
         sw $ra,EOFFSET_RA(\r)
@@ -106 +109 @@
         lw $t8,EOFFSET_T8(\r)
         lw $t9,EOFFSET_T9(\r)
+        
+#ifdef CONFIG_DEBUG_ALLREGS     
         lw $s0,EOFFSET_S0(\r)
         lw $s1,EOFFSET_S1(\r)
@@ -115 +120 @@
         lw $s7,EOFFSET_S7(\r)
         lw $s8,EOFFSET_S8(\r)
+#endif
         lw $gp,EOFFSET_GP(\r)
         lw $ra,EOFFSET_RA(\r)

kernel.config

@@ -74 +74 @@
 ! [CONFIG_DEBUG=y&(ARCH=amd64|ARCH=ia32)] CONFIG_DEBUG_AS_WATCHPOINT (y/n)
 
+# Save all interrupt registers
+! [CONFIG_DEBUG=y&(ARCH=amd64|ARCH=mips)] CONFIG_DEBUG_ALLREGS (y/n)
+
 ## Run-time configuration directives