Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8d6f9d69 authored by Alexander van Heukelum's avatar Alexander van Heukelum Committed by Ingo Molnar
Browse files

i386: convert hardware exception 4 to an interrupt gate 



Handle overflow exception with interrupt initially off.

Signed-off-by: default avatarAlexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent b94da1e4

arch/x86/kernel/traps_32.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -633,7 +633,7 @@ void do_##name(struct pt_regs *regs, long error_code) \ 
}

}





DO_VM86_ERROR_INFO(0, SIGFPE, "divide error", divide_error, FPE_INTDIV, regs->ip)

DO_VM86_ERROR_INFO(0, SIGFPE, "divide error", divide_error, FPE_INTDIV, regs->ip)

DO_VM86_TRAP(4, SIGSEGV, "overflow", overflow)

DO_VM86_ERROR(4, SIGSEGV, "overflow", overflow)

DO_VM86_TRAP(5, SIGSEGV, "bounds", bounds)

DO_VM86_TRAP(5, SIGSEGV, "bounds", bounds)

DO_TRAP_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)

DO_TRAP_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)

DO_TRAP(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)

DO_TRAP(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
@@ -1252,7 +1252,7 @@ void __init trap_init(void) 
	set_intr_gate(1, &debug);

	set_intr_gate(1, &debug);

	set_intr_gate(2, &nmi);

	set_intr_gate(2, &nmi);

	set_system_intr_gate(3, &int3); /* int3 can be called from all */

	set_system_intr_gate(3, &int3); /* int3 can be called from all */

	set_system_gate(4, &overflow); /* int4 can be called from all */

	set_system_intr_gate(4, &overflow); /* int4 can be called from all */

	set_trap_gate(5, &bounds);

	set_trap_gate(5, &bounds);

	set_trap_gate(6, &invalid_op);

	set_trap_gate(6, &invalid_op);

	set_trap_gate(7, &device_not_available);

	set_trap_gate(7, &device_not_available);