diff options
Diffstat (limited to 'libc/sysdeps/linux/mips')
| -rw-r--r-- | libc/sysdeps/linux/mips/__longjmp.c | 101 |
1 files changed, 49 insertions, 52 deletions
diff --git a/libc/sysdeps/linux/mips/__longjmp.c b/libc/sysdeps/linux/mips/__longjmp.c index 889876eb9..5be2e974b 100644 --- a/libc/sysdeps/linux/mips/__longjmp.c +++ b/libc/sysdeps/linux/mips/__longjmp.c @@ -27,61 +27,58 @@ #error This file uses GNU C extensions; you must compile with GCC. #endif -void -__longjmp (env, val_arg) - __jmp_buf env; - int val_arg; +void __longjmp (__jmp_buf env, int val_arg) { - /* gcc 1.39.19 miscompiled the longjmp routine (as it did setjmp before - the hack around it); force it to use $a1 for the longjmp value. - Without this it saves $a1 in a register which gets clobbered - along the way. */ - register int val asm ("a1"); + /* gcc 1.39.19 miscompiled the longjmp routine (as it did setjmp before + the hack around it); force it to use $a1 for the longjmp value. + Without this it saves $a1 in a register which gets clobbered + along the way. */ + register int val asm ("a1"); - /* Pull back the floating point callee-saved registers. */ + /* Pull back the floating point callee-saved registers. */ #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ - asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0])); - asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1])); - asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[2])); - asm volatile ("l.d $f26, %0" : : "m" (env[0].__fpregs[3])); - asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); - asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5])); - - /* Get and reconstruct the floating point csr. */ - asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); - asm volatile ("ctc1 $2, $31"); + asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0])); + asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1])); + asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[2])); + asm volatile ("l.d $f26, %0" : : "m" (env[0].__fpregs[3])); + asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); + asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5])); + + /* Get and reconstruct the floating point csr. */ + asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); + asm volatile ("ctc1 $2, $31"); #endif - /* Get the GP. */ - asm volatile ("lw $gp, %0" : : "m" (env[0].__gp)); - - /* Get the callee-saved registers. */ - asm volatile ("lw $16, %0" : : "m" (env[0].__regs[0])); - asm volatile ("lw $17, %0" : : "m" (env[0].__regs[1])); - asm volatile ("lw $18, %0" : : "m" (env[0].__regs[2])); - asm volatile ("lw $19, %0" : : "m" (env[0].__regs[3])); - asm volatile ("lw $20, %0" : : "m" (env[0].__regs[4])); - asm volatile ("lw $21, %0" : : "m" (env[0].__regs[5])); - asm volatile ("lw $22, %0" : : "m" (env[0].__regs[6])); - asm volatile ("lw $23, %0" : : "m" (env[0].__regs[7])); - - /* Get the PC. */ - asm volatile ("lw $25, %0" : : "m" (env[0].__pc)); - - /* Restore the stack pointer and the FP. They have to be restored - last and in a single asm as gcc, depending on options used, may - use either of them to access env. */ - asm volatile ("lw $29, %0\n\t" - "lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp)); - -/* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ - if (val == 0) - asm volatile ("li $2, 1"); - else - asm volatile ("move $2, %0" : : "r" (val)); - - asm volatile ("jr $25"); - - /* Avoid `volatile function does return' warnings. */ - for (;;); + /* Get the GP. */ + asm volatile ("lw $gp, %0" : : "m" (env[0].__gp)); + + /* Get the callee-saved registers. */ + asm volatile ("lw $16, %0" : : "m" (env[0].__regs[0])); + asm volatile ("lw $17, %0" : : "m" (env[0].__regs[1])); + asm volatile ("lw $18, %0" : : "m" (env[0].__regs[2])); + asm volatile ("lw $19, %0" : : "m" (env[0].__regs[3])); + asm volatile ("lw $20, %0" : : "m" (env[0].__regs[4])); + asm volatile ("lw $21, %0" : : "m" (env[0].__regs[5])); + asm volatile ("lw $22, %0" : : "m" (env[0].__regs[6])); + asm volatile ("lw $23, %0" : : "m" (env[0].__regs[7])); + + /* Get the PC. */ + asm volatile ("lw $25, %0" : : "m" (env[0].__pc)); + + /* Restore the stack pointer and the FP. They have to be restored + last and in a single asm as gcc, depending on options used, may + use either of them to access env. */ + asm volatile ("lw $29, %0\n\t" + "lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp)); + + /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ + if (val == 0) + asm volatile ("li $2, 1"); + else + asm volatile ("move $2, %0" : : "r" (val)); + + asm volatile ("jr $25"); + + /* Avoid `volatile function does return' warnings. */ + for (;;); } |