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docs: powerpc: Fix tables in syscall64-abi.rst

Message ID 20210225060857.16083-1-ajd@linux.ibm.com (mailing list archive)
State Handled Elsewhere
Headers show
Series docs: powerpc: Fix tables in syscall64-abi.rst | expand

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Commit Message

Andrew Donnellan Feb. 25, 2021, 6:08 a.m. UTC 
Commit 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed
table") attempted to fix the formatting of tables in syscall64-abi.rst, but
inadvertently changed some register names.

Redo the tables with the correct register names, and while we're here,
clean things up to separate the registers into different rows and add
headings.

Fixes: 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed table")
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
---
 Documentation/powerpc/syscall64-abi.rst | 51 ++++++++++++++++---------
 1 file changed, 32 insertions(+), 19 deletions(-)

Comments

Jonathan Corbet Feb. 25, 2021, 8:04 p.m. UTC | #1 
Andrew Donnellan <ajd@linux.ibm.com> writes:

> Commit 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed
> table") attempted to fix the formatting of tables in syscall64-abi.rst, but
> inadvertently changed some register names.
>
> Redo the tables with the correct register names, and while we're here,
> clean things up to separate the registers into different rows and add
> headings.
>
> Fixes: 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed table")
> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
> ---
>  Documentation/powerpc/syscall64-abi.rst | 51 ++++++++++++++++---------
>  1 file changed, 32 insertions(+), 19 deletions(-)

Applied, thanks.

jon
diff mbox series

Patch

diff --git a/Documentation/powerpc/syscall64-abi.rst b/Documentation/powerpc/syscall64-abi.rst
index cf9b2857c72a..dabee3729e5a 100644
--- a/Documentation/powerpc/syscall64-abi.rst
+++ b/Documentation/powerpc/syscall64-abi.rst
@@ -46,25 +46,38 @@  stack frame LR and CR save fields are not used.
 
 Register preservation rules
 ---------------------------
-Register preservation rules match the ELF ABI calling sequence with the
-following differences:
-
-+------------------------------------------------------------------------+
-|        For the sc instruction, differences with the ELF ABI		 |
-+--------------+--------------+------------------------------------------+
-| r0           | Volatile     | (System call number.)			 |
-| rr3          | Volatile     | (Parameter 1, and return value.)	 |
-| rr4-r8       | Volatile     | (Parameters 2-6.)			 |
-| rcr0         | Volatile     | (cr0.SO is the return error condition.)	 |
-| rcr1, cr5-7  | Nonvolatile  |						 |
-| rlr          | Nonvolatile  |						 |
-+--------------+--------------+------------------------------------------+
-|      For the scv 0 instruction, differences with the ELF ABI		 |
-+--------------+--------------+------------------------------------------+
-| r0           | Volatile     | (System call number.)			 |
-| r3           | Volatile     | (Parameter 1, and return value.)	 |
-| r4-r8        | Volatile     | (Parameters 2-6.)			 |
-+--------------+--------------+------------------------------------------+
+Register preservation rules match the ELF ABI calling sequence with some
+differences.
+
+For the sc instruction, the differences from the ELF ABI are as follows:
+
++--------------+--------------------+-----------------------------------------+
+| Register     | Preservation Rules | Purpose                                 |
++==============+====================+=========================================+
+| r0           | Volatile           | (System call number.)                   |
++--------------+--------------------+-----------------------------------------+
+| r3           | Volatile           | (Parameter 1, and return value.)        |
++--------------+--------------------+-----------------------------------------+
+| r4-r8        | Volatile           | (Parameters 2-6.)                       |
++--------------+--------------------+-----------------------------------------+
+| cr0          | Volatile           | (cr0.SO is the return error condition.) |
++--------------+--------------------+-----------------------------------------+
+| cr1, cr5-7   | Nonvolatile        |                                         |
++--------------+--------------------+-----------------------------------------+
+| lr           | Nonvolatile        |                                         |
++--------------+--------------------+-----------------------------------------+
+
+For the scv 0 instruction, the differences from the ELF ABI are as follows:
+
++--------------+--------------------+-----------------------------------------+
+| Register     | Preservation Rules | Purpose                                 |
++==============+====================+=========================================+
+| r0           | Volatile           | (System call number.)                   |
++--------------+--------------------+-----------------------------------------+
+| r3           | Volatile           | (Parameter 1, and return value.)        |
++--------------+--------------------+-----------------------------------------+
+| r4-r8        | Volatile           | (Parameters 2-6.)                       |
++--------------+--------------------+-----------------------------------------+
 
 All floating point and vector data registers as well as control and status
 registers are nonvolatile.