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| author | Nick Clifton <nickc@redhat.com> | 2016-02-09 13:44:05 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-02-09 13:44:05 +0000 |
| commit | 9676aeef0d672fea93310df14d36c1c9904d0179 (patch) | |
| tree | 9c03e4fae190b722d24752df6161f3b1adf74b24 /libgloss | |
| parent | c4dcfc1bda72883aa20eba627af840d1a4256c7b (diff) | |
| download | newlib-9676aeef0d672fea93310df14d36c1c9904d0179.zip newlib-9676aeef0d672fea93310df14d36c1c9904d0179.tar.gz newlib-9676aeef0d672fea93310df14d36c1c9904d0179.tar.bz2 | |
Seperate MSP430 cio syscalls into individual function sections.
START_FUNC: New macro.
END_FUNC: New macro.
exit, isatty, getpid, sc2: Use the new macros.
Diffstat (limited to 'libgloss')
| -rw-r--r-- | libgloss/msp430/ciosyscalls.S | 75 |
1 files changed, 46 insertions, 29 deletions
diff --git a/libgloss/msp430/ciosyscalls.S b/libgloss/msp430/ciosyscalls.S index abb01b0..889deae 100644 --- a/libgloss/msp430/ciosyscalls.S +++ b/libgloss/msp430/ciosyscalls.S @@ -21,28 +21,60 @@ .macro sc,a sc2 \a,\a .endm + +.macro START_FUNC name1, name2=foo + .pushsection .text.\name1,"ax",@progbits + .p2align 1 + .weak \name1 + .global \name1 +\name1: + .ifnc \name2,foo + .weak \name2 + .global \name2 +\name2: + .endif +.endm + +.macro END_FUNC name1, name2=foo + .type \name1 , @function + .size \name1 , . - \name1 + .ifnc \name2,foo + .type \name2 , @function + .size \name2 , . - \name2 + .endif + .popsection +.endm + + +START_FUNC exit, _exit + /* For some reason, the board fails to stop at a breakpoint + placed on top of a software breakpoint instruction. */ +/* MOV.B #0,R3 ; this is a software breakpoint instruction */ +1: br_ #1b +END_FUNC exit, _exit + +START_FUNC isatty,_isatty + MOV #1,R12 + ret_ +END_FUNC isatty,_isatty + + +START_FUNC getpid + MOV #42,R12 + ret_ +END_FUNC getpid + + .macro sc2,name,num - .weak \name - .global \name -\name: + START_FUNC \name call_ #__errno movx_ #ENOSYS, @R12 MOV.W #-1,R12 ret_ + END_FUNC \name .endm - .weak exit - .weak _exit - .global exit - .global _exit -exit: -_exit: - /* For some reason, the board fails to stop at a breakpoint - placed on top of a software breakpoint instruction. */ -/* MOV.B #0,R3 ; this is a software breakpoint instruction */ -1: br_ #1b - #define SC(n) sc2 n,SYS_##n SC (open) @@ -52,18 +84,3 @@ _exit: SC (fstat) SC (lseek) SC (kill) - - .weak isatty - .global isatty -isatty: - .weak _isatty - .global _isatty -_isatty: - MOV #1,R12 - ret_ - - .weak getpid - .global getpid -getpid: - MOV #42,R12 - ret_ |