diff options
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/m68k/Makefile | 3 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/m68k/sysdep.h | 34 |
2 files changed, 35 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/Makefile b/sysdeps/unix/sysv/linux/m68k/Makefile new file mode 100644 index 0000000000..bdbd1057c4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/Makefile @@ -0,0 +1,3 @@ +# Linux/m68k uses Motorola asm syntax and the ELF format. + +m68k-syntax-flag = -DMOTOROLA_SYNTAX diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.h b/sysdeps/unix/sysv/linux/m68k/sysdep.h index 9b6c8e1975..ee481172d3 100644 --- a/sysdeps/unix/sysv/linux/m68k/sysdep.h +++ b/sysdeps/unix/sysv/linux/m68k/sysdep.h @@ -23,6 +23,17 @@ Cambridge, MA 02139, USA. */ #include <sysdeps/unix/sysdep.h> +/* For Linux we can use the system call table in the header file + /usr/include/asm/unistd.h + of the kernel. But these symbols do not follow the SYS_* syntax + so we have to redefine the `SYS_ify' macro here. */ +#undef SYS_ify +#ifdef __STDC__ +# define SYS_ify(syscall_name) __NR_##syscall_name +#else +# define SYS_ify(syscall_name) __NR_/**/syscall_name +#endif + #ifdef ASSEMBLER #define POUND # @@ -32,7 +43,26 @@ Cambridge, MA 02139, USA. */ .globl name; \ .type name, @function; \ .align 4; \ - name##: + C_LABEL(name) \ + CALL_MCOUNT + +/* If compiled for profiling, call `_mcount' at the start of each function. */ +#ifdef PROF +/* The mcount code relies on a normal frame pointer being on the stack + to locate our caller, so push one just for its benefit. */ +#define CALL_MCOUNT \ + move.l %fp, -(%sp); move.l %sp, %fp; \ + jbsr JUMPTARGET (_mcount); \ + move.l (%sp)+, %fp; +#else +#define CALL_MCOUNT /* Do nothing. */ +#endif + +#ifdef PIC +#define JUMPTARGET(name) name##@PLTPC +#else +#define JUMPTARGET(name) name +#endif /* Since C identifiers are not normally prefixed with an underscore on this system, the asm identifier `syscall_error' intrudes on the @@ -53,7 +83,7 @@ Cambridge, MA 02139, USA. */ /* Store (- %d0) into errno through the GOT. */ #define SYSCALL_ERROR_HANDLER \ syscall_error: \ - move.l (errno@GOTPC.l, %pc), %a0; \ + move.l (errno@GOTPC, %pc), %a0; \ neg.l %d0; \ move.l %d0, (%a0); \ move.l POUND -1, %d0; \ |