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docs: powerpc: syscall64-abi.rst: fix a malformed table

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As reported:

	Documentation/powerpc/syscall64-abi.rst:53: WARNING: Malformed table.
	Text in column margin in table line 2.

	=========== ============= ========================================
	--- For the sc instruction, differences with the ELF ABI ---
	r0          Volatile      (System call number.)

This table requires a different notation to be valid.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-08-27 07:35:37 +02:00
parent d4dd87f83c
commit 209b44c804
1 changed files with 16 additions and 16 deletions
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32
Documentation/powerpc/syscall64-abi.rst
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@ -49,22 +49,22 @@ Register preservation rules
Register preservation rules match the ELF ABI calling sequence with the Register preservation rules match the ELF ABI calling sequence with the
following differences: following differences:
--- For the sc instruction, differences with the ELF ABI --- +------------------------------------------------------------------------+
=========== ============= ======================================== | For the sc instruction, differences with the ELF ABI |
r0 Volatile (System call number.) +--------------+--------------+------------------------------------------+
r3 Volatile (Parameter 1, and return value.) | r0 | Volatile | (System call number.) |
r4-r8 Volatile (Parameters 2-6.) | rr3 | Volatile | (Parameter 1, and return value.) |
cr0 Volatile (cr0.SO is the return error condition.) | rr4-r8 | Volatile | (Parameters 2-6.) |
cr1, cr5-7 Nonvolatile | rcr0 | Volatile | (cr0.SO is the return error condition.) |
lr Nonvolatile | rcr1, cr5-7 | Nonvolatile | |
=========== ============= ======================================== | rlr | Nonvolatile | |
+--------------+--------------+------------------------------------------+
--- For the scv 0 instruction, differences with the ELF ABI --- | For the scv 0 instruction, differences with the ELF ABI |
=========== ============= ======================================== +--------------+--------------+------------------------------------------+
r0 Volatile (System call number.) | r0 | Volatile | (System call number.) |
r3 Volatile (Parameter 1, and return value.) | r3 | Volatile | (Parameter 1, and return value.) |
r4-r8 Volatile (Parameters 2-6.) | r4-r8 | Volatile | (Parameters 2-6.) |
=========== ============= ======================================== +--------------+--------------+------------------------------------------+
All floating point and vector data registers as well as control and status All floating point and vector data registers as well as control and status
registers are nonvolatile. registers are nonvolatile.