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https://gitlab.com/qemu-project/openbios.git
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454b8225dc
the CIF, we were using space for one more stack item than we had allocated. Hence a subsequent stack push would corrupt the topmost item (in this case register %g7) causing it to be restored with a random value before returning to the client. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk> git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@749 f158a5a8-5612-0410-a976-696ce0be7e32
45 lines
1.1 KiB
ArmAsm
45 lines
1.1 KiB
ArmAsm
.globl sparc64_of_client_interface
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.data
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.align 8
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client_globals:
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.skip 64
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.text
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.align 4
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.register %g2, #scratch
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.register %g3, #scratch
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.register %g6, #scratch
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.register %g7, #scratch
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/*
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make some more space on stack since linux kernel only provides 128 bytes
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without memory to spill registers (used by gcc in -O0 mode)
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*/
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sparc64_of_client_interface:
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/* make sure caller's windows are on caller's stack */
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flushw
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save %sp, -248, %sp
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stx %g1, [%sp + 2047 + 192 + 0]
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stx %g2, [%sp + 2047 + 192 + 8]
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stx %g3, [%sp + 2047 + 192 + 16]
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stx %g4, [%sp + 2047 + 192 + 24]
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stx %g5, [%sp + 2047 + 192 + 32]
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stx %g6, [%sp + 2047 + 192 + 40]
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stx %g7, [%sp + 2047 + 192 + 48]
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call of_client_interface
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mov %i0, %o0
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mov %o0, %i0
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ldx [%sp + 2047 + 192 + 0], %g1
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ldx [%sp + 2047 + 192 + 8], %g2
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ldx [%sp + 2047 + 192 + 16], %g3
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ldx [%sp + 2047 + 192 + 24], %g4
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ldx [%sp + 2047 + 192 + 32], %g5
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ldx [%sp + 2047 + 192 + 40], %g6
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ldx [%sp + 2047 + 192 + 48], %g7
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return %i7+8
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nop
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