From d4349352a57eb00ce411b4c0542d3207357aecbe Mon Sep 17 00:00:00 2001 From: Aleksa Vuckovic Date: Wed, 3 Aug 2022 21:28:15 +0200 Subject: drawing lines to fb --- kernel/debug.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 kernel/debug.c (limited to 'kernel/debug.c') diff --git a/kernel/debug.c b/kernel/debug.c new file mode 100644 index 0000000..3ce4866 --- /dev/null +++ b/kernel/debug.c @@ -0,0 +1,21 @@ +#include + +void bochs_breakpoint(void) +{ + __asm__ volatile ("xchgw %bx, %bx;"); +} + +void put_in_r8(uint64_t value) +{ + __asm__ volatile ("movq %0, %%r8;" : : "r"(value) : "%r8"); +} + +void put_in_r9(uint64_t value) +{ + __asm__ volatile ("movq %0, %%r9;" : : "r"(value) : "%r9"); +} + +void put_in_r10(uint64_t value) +{ + __asm__ volatile ("movq %0, %%r10;" : : "r"(value) : "%r10"); +} -- cgit v1.2.3