diff options
Diffstat (limited to 'gc/alpha_mach_dep.S')
| -rw-r--r-- | gc/alpha_mach_dep.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/gc/alpha_mach_dep.S b/gc/alpha_mach_dep.S new file mode 100644 index 0000000..cb1f305 --- /dev/null +++ b/gc/alpha_mach_dep.S @@ -0,0 +1,87 @@ + # $Id: alpha_mach_dep.S,v 1.1 2002/07/10 14:21:11 ukai Exp $ + .arch ev6 + + .text + .align 4 + .globl GC_push_regs + .ent GC_push_regs 2 +GC_push_regs: + ldgp $gp, 0($27) + lda $sp, -16($sp) + stq $26, 0($sp) + .mask 0x04000000, 0 + .frame $sp, 16, $26, 0 + + # $0 integer result + # $1-$8 temp regs - not preserved cross calls + # $9-$15 call saved regs + # $16-$21 argument regs - not preserved cross calls + # $22-$28 temp regs - not preserved cross calls + # $29 global pointer - not preserved cross calls + # $30 stack pointer + +# define call_push(x) \ + mov x, $16; \ + jsr $26, GC_push_one; \ + ldgp $gp, 0($26) + + call_push($9) + call_push($10) + call_push($11) + call_push($12) + call_push($13) + call_push($14) + call_push($15) + + # $f0-$f1 floating point results + # $f2-$f9 call saved regs + # $f10-$f30 temp regs - not preserved cross calls + + # Use the most efficient transfer method for this hardware. + # Bit 1 detects the FIX extension, which includes ftoit. + amask 2, $0 + bne $0, $use_stack + +#undef call_push +#define call_push(x) \ + ftoit x, $16; \ + jsr $26, GC_push_one; \ + ldgp $gp, 0($26) + + call_push($f2) + call_push($f3) + call_push($f4) + call_push($f5) + call_push($f6) + call_push($f7) + call_push($f8) + call_push($f9) + + ldq $26, 0($sp) + lda $sp, 16($sp) + ret $31, ($26), 1 + + .align 4 +$use_stack: + +#undef call_push +#define call_push(x) \ + stt x, 8($sp); \ + ldq $16, 8($sp); \ + jsr $26, GC_push_one; \ + ldgp $gp, 0($26) + + call_push($f2) + call_push($f3) + call_push($f4) + call_push($f5) + call_push($f6) + call_push($f7) + call_push($f8) + call_push($f9) + + ldq $26, 0($sp) + lda $sp, 16($sp) + ret $31, ($26), 1 + + .end GC_push_regs |