diff options
Diffstat (limited to 'qemu/roms/openbios/arch/sparc64/switch.S')
| -rw-r--r-- | qemu/roms/openbios/arch/sparc64/switch.S | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/qemu/roms/openbios/arch/sparc64/switch.S b/qemu/roms/openbios/arch/sparc64/switch.S deleted file mode 100644 index d2cc7bedb..000000000 --- a/qemu/roms/openbios/arch/sparc64/switch.S +++ /dev/null @@ -1,124 +0,0 @@ -#include "pstate.h" -#include <asm/asi.h> -#define ASI_BP ASI_M_BYPASS -#define REGWIN_SZ 0x40 - - .globl __switch_context, __switch_context_nosave, __exit_context, halt - - .text - .align 4 - .register %g2, #scratch - .register %g3, #scratch - .register %g6, #scratch - .register %g7, #scratch - -/* - * Switch execution context - * This saves registers in the stack, then - * switches the stack, and restores everything from the new stack. - * This function takes no argument. New stack pointer is - * taken from global variable __context, and old stack pointer - * is also saved to __context. This way we can just jump to - * this routine to get back to the original context. - */ - -/* XXX: totally bogus for sparc, need to save and restore all windows */ -__switch_context: - - /* make sure caller's windows are on caller's stack */ - flushw; - - /* Save everything in current stack */ - - setx __context, %g2, %g1 - stx %g3, [%g1 + 24] - stx %g4, [%g1 + 32] - stx %g5, [%g1 + 40] - stx %g6, [%g1 + 48] - stx %g7, [%g1 + 56] - - stx %o0, [%g1 + 64] - stx %o1, [%g1 + 72] - stx %o2, [%g1 + 80] - stx %o3, [%g1 + 88] - stx %o4, [%g1 + 96] - stx %o5, [%g1 + 104] - stx %o6, [%g1 + 112] - stx %o7, [%g1 + 120] - - stx %l0, [%g1 + 128] - stx %l1, [%g1 + 136] - stx %l2, [%g1 + 144] - stx %l3, [%g1 + 152] - stx %l4, [%g1 + 160] - stx %l5, [%g1 + 168] - stx %l6, [%g1 + 176] - stx %l7, [%g1 + 184] - - stx %i0, [%g1 + 192] - stx %i1, [%g1 + 200] - stx %i2, [%g1 + 208] - stx %i3, [%g1 + 216] - stx %i4, [%g1 + 224] - stx %i5, [%g1 + 232] - stx %i6, [%g1 + 240] - stx %i7, [%g1 + 248] - -__switch_context_nosave: - /* Interrupts are not allowed... */ - /* make sure caller's windows are on caller's stack */ - flushw - /* Load all registers - */ - setx __context, %g2, %g1 - ldx [%g1], %g1 - ldx [%g1 + 16], %g2 - ldx [%g1 + 24], %g3 - ldx [%g1 + 32], %g4 - ldx [%g1 + 40], %g5 - ldx [%g1 + 48], %g6 - ldx [%g1 + 56], %g7 - - ldx [%g1 + 64], %o0 - ldx [%g1 + 72], %o1 - ldx [%g1 + 80], %o2 - ldx [%g1 + 88], %o3 - ldx [%g1 + 96], %o4 - ldx [%g1 + 104], %o5 - ldx [%g1 + 112], %o6 - ldx [%g1 + 120], %o7 - - ldx [%g1 + 128], %l0 - ldx [%g1 + 136], %l1 - ldx [%g1 + 144], %l2 - ldx [%g1 + 152], %l3 - ldx [%g1 + 160], %l4 - ldx [%g1 + 168], %l5 - ldx [%g1 + 176], %l6 - ldx [%g1 + 184], %l7 - - ldx [%g1 + 192], %i0 - ldx [%g1 + 200], %i1 - ldx [%g1 + 208], %i2 - ldx [%g1 + 216], %i3 - ldx [%g1 + 224], %i4 - ldx [%g1 + 232], %i5 - ldx [%g1 + 240], %i6 - ldx [%g1 + 248], %i7 - - ldx [%g1 + 256], %g1 - /* Finally, load new %pc */ - jmp %g1 - clr %g1 - -__exit_context: - /* Get back to the original context */ - call __switch_context - nop - - /* We get here if the other context attempt to switch to this - * dead context. This should not happen. */ - -halt: - b halt - nop |