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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-03-21 00:25:17 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-03-21 00:25:17 +0000 |
| commit | 55a46f0500f36567ce352048454534135aff92f2 (patch) | |
| tree | 8b08f2ca6a982e81e2f644e07f52525ff9a35053 /nuttx/arch/arm/include/armv6-m | |
| parent | ae6758d5518a0e92f10476592dc156af38f36244 (diff) | |
| download | px4-nuttx-55a46f0500f36567ce352048454534135aff92f2.tar.gz px4-nuttx-55a46f0500f36567ce352048454534135aff92f2.tar.bz2 px4-nuttx-55a46f0500f36567ce352048454534135aff92f2.zip | |
Fix syscall parameter passing for the case where the number of parameters is >4
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5767 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/include/armv6-m')
| -rw-r--r-- | nuttx/arch/arm/include/armv6-m/syscall.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/nuttx/arch/arm/include/armv6-m/syscall.h b/nuttx/arch/arm/include/armv6-m/syscall.h index 9548ae494..863a7afec 100644 --- a/nuttx/arch/arm/include/armv6-m/syscall.h +++ b/nuttx/arch/arm/include/armv6-m/syscall.h @@ -156,7 +156,10 @@ static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1, return reg0; } -/* SVC call with SYS_ call number and four parameters */ +/* SVC call with SYS_ call number and four parameters. + * + * NOTE the nonstandard parameter passing: parm4 is in R4 + */ static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3, @@ -180,7 +183,10 @@ static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1, return reg0; } -/* SVC call with SYS_ call number and five parameters */ +/* SVC call with SYS_ call number and five parameters. + * + * NOTE the nonstandard parameter passing: parm4 and parm5 are in R4 and R5 + */ static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3, @@ -205,7 +211,10 @@ static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1, return reg0; } -/* SVC call with SYS_ call number and six parameters */ +/* SVC call with SYS_ call number and six parameters. + * + * NOTE the nonstandard parameter passing: parm4-parm6 are in R4-R6 + */ static inline uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1, uintptr_t parm2, uintptr_t parm3, |