Grammar and language fixes.
Submitted by: wblock Review: https://reviews.freebsd.org/D2969 MFC after: 12 days
This commit is contained in:
Konstantin Belousov
parent
2e33d3583d
commit
eb89622653
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=285104
@ -2,7 +2,7 @@
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.\" $NetBSD: ptrace.2,v 1.2 1995/02/27 12:35:37 cgd Exp $
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.\"
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.\" This file is in the public domain.
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.Dd June 30, 2015
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.Dd July 3, 2015
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.Dt PTRACE 2
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.Os
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.Sh NAME
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@ -506,16 +506,16 @@ argument is ignored.
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.Sh x86 MACHINE-SPECIFIC REQUESTS
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.Bl -tag -width "Dv PT_GETXSTATE_INFO"
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.It Dv PT_GETXMMREGS
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Copies out the XMM FPU state into the buffer pointed to by the
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Copy the XMM FPU state into the buffer pointed to by the
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argument
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.Fa addr .
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The buffer has the same layout as the 32bit save buffer for the
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The buffer has the same layout as the 32-bit save buffer for the
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machine instruction
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.Dv FXSAVE .
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.Pp
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This request is only valid for i386 programs, both on native 32bit
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This request is only valid for i386 programs, both on native 32-bit
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systems and on amd64 kernels.
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For 64bit amd64 programs, the XMM state is reported as part of
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For 64-bit amd64 programs, the XMM state is reported as part of
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the FPU state returned by the
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.Dv PT_GETFPREGS
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request.
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@ -524,10 +524,10 @@ The
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.Fa data
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argument is ignored.
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.It Dv PT_SETXMMREGS
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Loads the XMM FPU state for the thread from the buffer pointed to
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Load the XMM FPU state for the thread from the buffer pointed to
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by the argument
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.Fa addr .
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The buffer has the same layout as the 32bit load buffer for the
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The buffer has the same layout as the 32-bit load buffer for the
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machine instruction
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.Dv FXRSTOR .
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.Pp
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@ -539,15 +539,13 @@ The
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.Fa data
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argument is ignored.
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.It Dv PT_GETXSTATE_INFO
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Returns the information about the enablement state of the XSAVE FPU
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extensions supported by the CPU and allowed by the OS for use by userspace
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programs.
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Report which XSAVE FPU extensions are supported by the CPU
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and allowed in userspace programs.
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The
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.Fa addr
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argument must point to the variable of type
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argument must point to a variable of type
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.Vt struct ptrace_xstate_info ,
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which contains the information on the request return.
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The
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.Vt struct ptrace_xstate_info
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is defined as follows:
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.Bd -literal
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@ -558,8 +556,8 @@ struct ptrace_xstate_info {
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.Ed
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The
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.Dv xsave_mask
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field is the bitmask of the currently enabled extensions.
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The meaning of the bits is defined by the Intel and AMD
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field is a bitmask of the currently enabled extensions.
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The meaning of the bits is defined in the Intel and AMD
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processor documentation.
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The
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.Dv xsave_len
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@ -573,10 +571,10 @@ The
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argument value must be equal to the size of the
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.Vt struct ptrace_xstate_info .
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.It Dv PT_GETXSTATE
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Returns the content of the XSAVE area for the thread.
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Return the content of the XSAVE area for the thread.
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The
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.Fa addr
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argument points to the buffer where the content is copied, the
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argument points to the buffer where the content is copied, and the
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.Fa data
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argument specifies the size of the buffer.
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The kernel copies out as much content as allowed by the buffer size.
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@ -590,8 +588,12 @@ pointer.
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The buffer size is passed in the
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.Fa data
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argument.
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The buffer must be at least as large to allow the x87 FPU and XMM state,
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but not large than the XSAVE state length, as reported by the
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The buffer must be at least as large as the
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.Vt struct savefpu
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(defined in
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.Pa x86/fpu.h )
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to allow the complete x87 FPU and XMM state load.
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It must not be larger than the XSAVE state length, as reported by the
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.Dv xsave_len
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field from the
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.Vt struct ptrace_xstate_info
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@ -602,26 +604,28 @@ Layout of the buffer is identical to the layout of the load area for the
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.Dv XRSTOR
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machine instruction.
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.It Dv PT_GETFSBASE
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The request returns the value of base used when doing segmented
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Return the value of the base used when doing segmented
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memory addressing using the %fs segment register.
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The
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.Fa addr
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argument points to the
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argument points to an
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.Vt unsigned long
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variable which gets the base value.
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variable where the base value is stored.
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.Pp
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The
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.Fa data
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argument is ignored.
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.It Dv PT_GETGSBASE
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Same as the
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Like the
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.Dv PT_GETFSBASE
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request, but returns the base for the %gs segment register.
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.It Dv PT_SETFSBASE
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Sets the base for the %fs segment register to the value pointed
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Set the base for the %fs segment register to the value pointed to
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by the
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.Fa addr
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argument, which must point to the
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argument.
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.Fa addr
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must point to the
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.Vt unsigned long
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variable containing the new base.
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.Pp
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@ -629,27 +633,25 @@ The
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.Fa data
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argument is ignored.
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.It Dv PT_SETGSBASE
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Same as the
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Like the
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.Dv PT_SETFSBASE
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request, but allows setting the base for the %gs segment register.
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request, but sets the base for the %gs segment register.
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.El
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.Sh PowerPC MACHINE-SPECIFIC REQUESTS
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.Bl -tag -width "Dv PT_SETVRREGS"
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.It Dv PT_GETVRREGS
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Returns the
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Return the thread's
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.Dv ALTIVEC
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machine state for the thread into the buffer pointed to by
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the argument
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machine state in the buffer pointed to by
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.Fa addr .
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.Pp
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The
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.Fa data
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argument is ignored.
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.It Dv PT_SETVRREGS
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Set the
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Set the thread's
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.Dv ALTIVEC
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machine state for the thread from the buffer pointed to by
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the argument
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machine state from the buffer pointed to by
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.Fa addr .
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.Pp
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The
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@ -719,24 +721,36 @@ was less than or equal to zero, or larger than the
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structure known to the kernel.
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.It
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The size (in
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.Fa data)
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.Fa data )
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provided to the x86-specific
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.Dv PT_GETXSTATE_INFO
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request was not equal to the size of the
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.Vt struct ptrace_xstate_info .
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.It
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The size (in
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.Fa data)
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.Fa data )
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provided to the x86-specific
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.Dv PT_SETXSTATE
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request was less than the size of the x87 + XMM save area,
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or larger than returned in the
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request was less than the size of the x87 plus the XMM save area.
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.It
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The size (in
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.Fa data )
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provided to the x86-specific
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.Dv PT_SETXSTATE
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request was larger than returned in the
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.Dv xsave_len
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member of the
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.Vt struct ptrace_xstate_info
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from the
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.Dv PT_GETXSTATE_INFO
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request.
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.It
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The base value, provided to the amd64-specific requests
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.Dv PT_SETFSBASE
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or
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.Dv PT_SETGSBASE ,
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pointed outside of the valid user address space.
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This error will not occur in 32-bit programs.
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.El
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.It Bq Er EBUSY
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.Bl -bullet -compact
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