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https://github.com/balena-os/balena-supervisor.git
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79 lines
2.2 KiB
Diff
79 lines
2.2 KiB
Diff
commit 6a0e489a556d753161ce75d85a3114654c031853
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Author: Pablo Carranza Velez <pablo@resin.io>
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Date: Fri Jun 9 14:57:23 2017 -0700
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Do not fail when there's no MMX support
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Adapted from https://github.com/resin-io/resin-supervisor/blob/c7a7ba93fb46775006f0739ced41fc0a2059b426/gosuper/go-1.6.3-patches/0001-Revert-runtime-check-and-fail-early-with-a-message-i.patch
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Original author: Petros Angelatos <petrosagg@gmail.com>
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Signed-off-by: Pablo Carranza Velez <pablo@resin.io>
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diff --git a/src/runtime/asm_386.s b/src/runtime/asm_386.s
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index 3d0b74c..f4e51ce 100644
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--- a/src/runtime/asm_386.s
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+++ b/src/runtime/asm_386.s
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@@ -26,32 +26,6 @@ TEXT runtime·rt0_go(SB),NOSPLIT,$0
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MOVL SP, (g_stack+stack_hi)(BP)
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// find out information about the processor we're on
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-#ifdef GOOS_nacl // NaCl doesn't like PUSHFL/POPFL
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- JMP has_cpuid
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-#else
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- // first see if CPUID instruction is supported.
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- PUSHFL
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- PUSHFL
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- XORL $(1<<21), 0(SP) // flip ID bit
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- POPFL
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- PUSHFL
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- POPL AX
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- XORL 0(SP), AX
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- POPFL // restore EFLAGS
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- TESTL $(1<<21), AX
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- JNE has_cpuid
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-#endif
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-
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-bad_proc: // show that the program requires MMX.
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- MOVL $2, 0(SP)
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- MOVL $bad_proc_msg<>(SB), 4(SP)
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- MOVL $0x3d, 8(SP)
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- CALL runtime·write(SB)
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- MOVL $1, 0(SP)
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- CALL runtime·exit(SB)
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- INT $3
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-
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-has_cpuid:
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MOVL $0, AX
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CPUID
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MOVL AX, SI
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@@ -76,11 +50,6 @@ notintel:
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MOVL CX, AX // Move to global variable clobbers CX when generating PIC
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MOVL AX, runtime·cpuid_ecx(SB)
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MOVL DX, runtime·cpuid_edx(SB)
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-
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- // Check for MMX support
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- TESTL $(1<<23), DX // MMX
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- JZ bad_proc
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-
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// Load EAX=7/ECX=0 cpuid flags
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CMPL SI, $7
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JLT nocpuinfo
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@@ -170,17 +139,6 @@ ok:
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INT $3
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RET
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-DATA bad_proc_msg<>+0x00(SB)/8, $"This pro"
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-DATA bad_proc_msg<>+0x08(SB)/8, $"gram can"
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-DATA bad_proc_msg<>+0x10(SB)/8, $" only be"
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-DATA bad_proc_msg<>+0x18(SB)/8, $" run on "
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-DATA bad_proc_msg<>+0x20(SB)/8, $"processo"
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-DATA bad_proc_msg<>+0x28(SB)/8, $"rs with "
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-DATA bad_proc_msg<>+0x30(SB)/8, $"MMX supp"
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-DATA bad_proc_msg<>+0x38(SB)/4, $"ort."
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-DATA bad_proc_msg<>+0x3c(SB)/1, $0xa
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-GLOBL bad_proc_msg<>(SB), RODATA, $0x3d
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-
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DATA runtime·mainPC+0(SB)/4,$runtime·main(SB)
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GLOBL runtime·mainPC(SB),RODATA,$4
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