Entry opcode needs to check if moving to new register frame would cause register window overflow. Entry used in function prologue never overflows because preceding windowed call* opcode writes return address to the target register window frame, causing overflow exceptions at the point of call. But when a sequence of entry opcodes is used for register window spilling there may not be a call or other opcode that would cause window check between entries and they would not raise overflow exception themselves resulting in data corruption. Cc: qemu-stable@nongnu.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> |
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core-dc232b | ||
core-dc233c | ||
core-fsf | ||
core-dc232b.c | ||
core-dc233c.c | ||
core-fsf.c | ||
cpu-qom.h | ||
cpu.c | ||
cpu.h | ||
gdbstub.c | ||
helper.c | ||
helper.h | ||
import_core.sh | ||
Makefile.objs | ||
op_helper.c | ||
overlay_tool.h | ||
translate.c | ||
xtensa-semi.c |