2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
41 lines
737 B
ArmAsm
41 lines
737 B
ArmAsm
/* _cpuid() - interface to cpuid instruction */
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/* void _cpuid(u32_t *eax, u32_t *ebx, u32_t *ecx, u32_t *edx); */
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/* 0 for OK, nonzero for unsupported */
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#include <machine/asm.h>
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ENTRY(_cpuid)
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/* save work registers */
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push %ebp
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push %ebx
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/* set eax parameter to cpuid and execute cpuid */
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movl 12(%esp), %ebp
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mov (%ebp), %eax
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movl 16(%esp), %ebp
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mov (%ebp), %ebx
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movl 20(%esp), %ebp
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mov (%ebp), %ecx
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movl 24(%esp), %ebp
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mov (%ebp), %edx
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.byte 0x0F, 0xA2 /* CPUID */
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/* store results in pointer arguments */
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movl 12(%esp), %ebp
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movl %eax, (%ebp)
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movl 16(%esp), %ebp
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movl %ebx, (%ebp)
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movl 20(%esp), %ebp
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movl %ecx, (%ebp)
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movl 24(%esp), %ebp
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movl %edx, (%ebp)
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/* restore registers */
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pop %ebx
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pop %ebp
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ret
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