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-rw-r--r--contrib/syslinux/latest/com32/gdbstub/int.S77
1 files changed, 0 insertions, 77 deletions
diff --git a/contrib/syslinux/latest/com32/gdbstub/int.S b/contrib/syslinux/latest/com32/gdbstub/int.S
deleted file mode 100644
index 2a1ff9d..0000000
--- a/contrib/syslinux/latest/com32/gdbstub/int.S
+++ /dev/null
@@ -1,77 +0,0 @@
- .section ".text","ax"
-
-#define SIGTRAP 5
-
-#define SIZEOF_I386_REGS 32
-#define SIZEOF_I386_FLAGS 4
-
-/* When invoked, the stack contains: eflags, cs, eip, signo. */
-#define IH_OFFSET_GDB_REGS ( 0 )
-#define IH_OFFSET_GDB_EIP ( IH_OFFSET_GDB_REGS + SIZEOF_I386_REGS )
-#define IH_OFFSET_GDB_EFLAGS ( IH_OFFSET_GDB_EIP + 4 )
-#define IH_OFFSET_GDB_SEG_REGS ( IH_OFFSET_GDB_EFLAGS + SIZEOF_I386_FLAGS )
-#define IH_OFFSET_GDB_END ( IH_OFFSET_GDB_SEG_REGS + 6 * 4 )
-#define IH_OFFSET_OLD_EIP ( IH_OFFSET_GDB_END )
-#define IH_OFFSET_OLD_CS ( IH_OFFSET_OLD_EIP + 4 )
-#define IH_OFFSET_OLD_EFLAGS ( IH_OFFSET_OLD_CS + 4 )
-#define IH_OFFSET_END ( IH_OFFSET_OLD_EFLAGS + 4 )
-
-/* We also access the stack whilst still storing or restoring
- * the register snapshot. Since ESP is in flux, we need
- * special offsets.
- */
-#define IH_OFFSET_FLUX_OLD_CS ( IH_OFFSET_OLD_CS - 44 )
-#define IH_OFFSET_FLUX_OLD_EFLAGS ( IH_OFFSET_OLD_EFLAGS - 40 )
-#define IH_OFFSET_FLUX_OLD_EIP ( IH_OFFSET_OLD_EIP - 36 )
-#define IH_OFFSET_FLUX_END ( IH_OFFSET_END - 20 )
-
- .global int_handler
-int_handler:
- /* Store CPU state in GDB register snapshot */
- pushw $0
- pushw %gs
- pushw $0
- pushw %fs
- pushw $0
- pushw %es
- pushw $0
- pushw %ds
- pushw $0
- pushw %ss
- pushw $0
- pushw IH_OFFSET_FLUX_OLD_CS + 2(%esp)
- pushl IH_OFFSET_FLUX_OLD_EFLAGS(%esp)
- pushl IH_OFFSET_FLUX_OLD_EIP(%esp)
- pushl %edi
- pushl %esi
- pushl %ebp
- leal IH_OFFSET_FLUX_END(%esp), %edi
- pushl %edi /* old ESP */
- pushl %ebx
- pushl %edx
- pushl %ecx
- pushl %eax
-
- /* Call GDB stub exception handler */
- movl $SIGTRAP, %eax
- movl %esp, %edx
- call gdbstub_handler
-
- /* Restore CPU state from GDB register snapshot */
- popl %eax
- popl %ecx
- popl %edx
- popl %ebx
- addl $4, %esp /* Changing ESP currently not supported */
- popl %ebp
- popl %esi
- popl %edi
- popl IH_OFFSET_FLUX_OLD_EIP(%esp)
- popl IH_OFFSET_FLUX_OLD_EFLAGS(%esp)
- popl IH_OFFSET_FLUX_OLD_CS(%esp)
- popl %ss
- popl %ds
- popl %es
- popl %fs
- popl %gs
- iret