Mercurial > pub > dyncall > dyncall

view doc/disas_examples/mips64.n64.disas @ 357:d982a00c2177

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
- PPC64 asm syntax fix, specifying explicitly comparison mode for cmpi (newer toolchains complain, older ones took optional field of instruction which happened to be same value)
author Tassilo Philipp
date Tue, 25 Feb 2020 18:16:13 +0100
parents c0390dc85a07
children 75c19f11b86a
line wrap: on
line source

; #include <stdlib.h>
; 
; void leaf_call(int b, int c, int d, int e, int f, int g, int h)
; {
; }
; 
; void nonleaf_call(int a, int b, int c, int d, int e, int f, int g, int h)
; {
; 	/* use some local data */
; 	*(char*)alloca(220) = 'L';
; 	leaf_call(b, c, d, e, f, g, h);
; }
; 
; int main()
; {
; 	nonleaf_call(0, 1, 2, 3, 4, 5, 6, 7);
; 	return 0;
; }



; output from freebsd-12.0_r333647-malta_mips64elhf w/ gcc 4.2.1

0000000000000000 <leaf_call>:
   0:   67bdffd0        daddiu  sp,sp,-48
   4:   ffbe0028        sd      s8,40(sp)
   8:   ffbc0020        sd      gp,32(sp)
   c:   03a0f02d        move    s8,sp
  10:   3c1c0000        lui     gp,0x0
  14:   0399e02d        daddu   gp,gp,t9
  18:   679c0000        daddiu  gp,gp,0
  1c:   0080102d        move    v0,a0
  20:   00a0182d        move    v1,a1
  24:   00c0202d        move    a0,a2
  28:   00e0282d        move    a1,a3
  2c:   0100302d        move    a2,a4
  30:   0120382d        move    a3,a5
  34:   0140402d        move    a4,a6
  38:   00021000        sll     v0,v0,0x0
  3c:   afc20000        sw      v0,0(s8)
  40:   00031000        sll     v0,v1,0x0
  44:   afc20004        sw      v0,4(s8)
  48:   00041000        sll     v0,a0,0x0
  4c:   afc20008        sw      v0,8(s8)
  50:   00051000        sll     v0,a1,0x0
  54:   afc2000c        sw      v0,12(s8)
  58:   00061000        sll     v0,a2,0x0
  5c:   afc20010        sw      v0,16(s8)
  60:   00071000        sll     v0,a3,0x0
  64:   afc20014        sw      v0,20(s8)
  68:   00081000        sll     v0,a4,0x0
  6c:   afc20018        sw      v0,24(s8)
  70:   03c0e82d        move    sp,s8
  74:   dfbe0028        ld      s8,40(sp)
  78:   dfbc0020        ld      gp,32(sp)
  7c:   03e00008        jr      ra
  80:   67bd0030        daddiu  sp,sp,48
  84:   00000000        nop

0000000000000088 <nonleaf_call>:
  88:   67bdff90        daddiu  sp,sp,-112 ; |
  8c:   ffbf0060        sd      ra,96(sp)  ; |
  90:   ffbe0058        sd      s8,88(sp)  ; | prolog
  94:   ffbc0050        sd      gp,80(sp)  ; |
  98:   03a0f02d        move    s8,sp      ; |
  9c:   3c1c0000        lui     gp,0x0     ; @@@ unsure
  a0:   0399e02d        daddu   gp,gp,t9   ; @@@ unsure
  a4:   679c0000        daddiu  gp,gp,0    ; @@@ unsure
  a8:   0080102d        move    v0,a0      ; |
  ac:   00a0182d        move    v1,a1      ; |
  b0:   00c0202d        move    a0,a2      ; | pointlessly (?) moving a{0,1} to v{0,1} respectively,
  b4:   00e0282d        move    a1,a3      ; | and all last 6 a? registers two regs down, freeing up
  b8:   0100302d        move    a2,a4      ; | a{6,7}, which aren't used for anything though
  bc:   0120382d        move    a3,a5      ; |
  c0:   0140402d        move    a4,a6      ; |
  c4:   0160482d        move    a5,a7      ; /
  c8:   00021000        sll     v0,v0,0x0  ; \
  cc:   afc20000        sw      v0,0(s8)   ; |
  d0:   00031000        sll     v0,v1,0x0  ; |
  d4:   afc20004        sw      v0,4(s8)   ; |
  d8:   00041000        sll     v0,a0,0x0  ; |
  dc:   afc20008        sw      v0,8(s8)   ; |
  e0:   00051000        sll     v0,a1,0x0  ; |
  e4:   afc2000c        sw      v0,12(s8)  ; | storing all register in args in local area on stack
  e8:   00061000        sll     v0,a2,0x0  ; | (using the set of pointlessly moved-to regs, above)
  ec:   afc20010        sw      v0,16(s8)  ; |
  f0:   00071000        sll     v0,a3,0x0  ; |
  f4:   afc20014        sw      v0,20(s8)  ; |
  f8:   00081000        sll     v0,a4,0x0  ; |
  fc:   afc20018        sw      v0,24(s8)  ; |
 100:   00091000        sll     v0,a5,0x0  ; |
 104:   afc2001c        sw      v0,28(s8)  ; |
 108:   67bdff10        daddiu  sp,sp,-240 ; alloca(220) - with padding to guarantee alignment
 10c:   ffdd0020        sd      sp,32(s8)  ; |
 110:   dfc30020        ld      v1,32(s8)  ; | start of alloca()'d memory -> v1, by ...
 114:   64620007        daddiu  v0,v1,7    ; | ... using v0 as helper to align to 8b, and some unnecessary stores/reloads instead of a move
 118:   000210fa        dsrl    v0,v0,0x3  ; |
 11c:   000210f8        dsll    v0,v0,0x3  ; |
 120:   ffc20020        sd      v0,32(s8)  ; move addr in v0 via local area ...
 124:   dfc30020        ld      v1,32(s8)  ; ... to v1
 128:   2402004c        li      v0,76      ; 'L' -> v0, and ...
 12c:   a0620000        sb      v0,0(v1)   ; ... store in local area (of alloca()'d space)
 130:   8fc20004        lw      v0,4(s8)   ; prep arg 0 (pointlessly) to move to a0 below
 134:   8fc30008        lw      v1,8(s8)   ; prep arg 1 (pointlessly) to move to a1 below
 138:   8fc6000c        lw      a2,12(s8)  ; arg 2
 13c:   8fc70010        lw      a3,16(s8)  ; arg 3
 140:   8fc80014        lw      a4,20(s8)  ; arg 4
 144:   8fc90018        lw      a5,24(s8)  ; arg 5
 148:   8fca001c        lw      a6,28(s8)  ; arg 6
 14c:   0040202d        move    a0,v0      ; arg 0
 150:   0060282d        move    a1,v1      ; arg 1
 154:   df990000        ld      t9,0(gp)   ; addr of callee -> t9
 158:   0320f809        jalr    t9         ; return address -> ra, and call
 15c:   00000000        nop                ; branch delay slot
 160:   03c0e82d        move    sp,s8      ; |
 164:   dfbf0060        ld      ra,96(sp)  ; |
 168:   dfbe0058        ld      s8,88(sp)  ; |
 16c:   dfbc0050        ld      gp,80(sp)  ; | epilog
 170:   03e00008        jr      ra         ; |
 174:   67bd0070        daddiu  sp,sp,112  ; |         branch delay slot style

0000000000000178 <main>:
 178:   67bdffe0        daddiu  sp,sp,-32  ; |
 17c:   ffbf0010        sd      ra,16(sp)  ; |
 180:   ffbe0008        sd      s8,8(sp)   ; | prolog
 184:   ffbc0000        sd      gp,0(sp)   ; |
 188:   03a0f02d        move    s8,sp      ; |
 18c:   3c1c0000        lui     gp,0x0     ; @@@ unsure
 190:   0399e02d        daddu   gp,gp,t9   ; @@@ unsure
 194:   679c0000        daddiu  gp,gp,0    ; @@@ unsure
 198:   0000202d        move    a0,zero    ; arg 0
 19c:   24050001        li      a1,1       ; arg 1
 1a0:   24060002        li      a2,2       ; arg 2
 1a4:   24070003        li      a3,3       ; arg 3
 1a8:   24080004        li      a4,4       ; arg 4
 1ac:   24090005        li      a5,5       ; arg 5
 1b0:   240a0006        li      a6,6       ; arg 6
 1b4:   240b0007        li      a7,7       ; arg 7
 1b8:   df990000        ld      t9,0(gp)   ; address of callee -> t9
 1bc:   0320f809        jalr    t9         ; return address -> ra, and call
 1c0:   00000000        nop                ; branch delay slot
 1c4:   0000102d        move    v0,zero    ; return value
 1c8:   03c0e82d        move    sp,s8      ; |
 1cc:   dfbf0010        ld      ra,16(sp)  ; |
 1d0:   dfbe0008        ld      s8,8(sp)   ; |
 1d4:   dfbc0000        ld      gp,0(sp)   ; | epilog
 1d8:   03e00008        jr      ra         ; |
 1dc:   67bd0020        daddiu  sp,sp,32   ; |         branch delay slot style



; output from debian-sid_20150616-malta_mips64el_n64 w/ gcc 4.9.2

0000000000000000 <leaf_call>:
   0:   67bdffd0        daddiu  sp,sp,-48
   4:   ffbe0028        sd      s8,40(sp)
   8:   03a0f02d        move    s8,sp
   c:   0080602d        move    t0,a0
  10:   00a0582d        move    a7,a1
  14:   00e0282d        move    a1,a3
  18:   0100202d        move    a0,a4
  1c:   0120182d        move    v1,a5
  20:   0140102d        move    v0,a6
  24:   000c3800        sll     a3,t0,0x0
  28:   afc70000        sw      a3,0(s8)
  2c:   000b3800        sll     a3,a7,0x0
  30:   afc70004        sw      a3,4(s8)
  34:   00063000        sll     a2,a2,0x0
  38:   afc60008        sw      a2,8(s8)
  3c:   00052800        sll     a1,a1,0x0
  40:   afc5000c        sw      a1,12(s8)
  44:   00042000        sll     a0,a0,0x0
  48:   afc40010        sw      a0,16(s8)
  4c:   00031800        sll     v1,v1,0x0
  50:   afc30014        sw      v1,20(s8)
  54:   00021000        sll     v0,v0,0x0
  58:   afc20018        sw      v0,24(s8)
  5c:   03c0e82d        move    sp,s8
  60:   dfbe0028        ld      s8,40(sp)
  64:   67bd0030        daddiu  sp,sp,48
  68:   03e00008        jr      ra
  6c:   00200825        move    at,at

0000000000000070 <nonleaf_call>:
  70:   67bdffc0        daddiu  sp,sp,-64  ; |
  74:   ffbf0038        sd      ra,56(sp)  ; |
  78:   ffbe0030        sd      s8,48(sp)  ; | prolog
  7c:   ffbc0028        sd      gp,40(sp)  ; |
  80:   03a0f02d        move    s8,sp      ; |
  84:   3c1c0000        lui     gp,0x0     ; @@@ unsure
  88:   0399e02d        daddu   gp,gp,t9   ; @@@ unsure
  8c:   679c0000        daddiu  gp,gp,0    ; @@@ unsure
  90:   0080702d        move    t2,a0      ; |
  94:   00a0682d        move    t1,a1      ; |
  98:   00c0602d        move    t0,a2      ; | pointlessly (?) moving regs around, freeing effectively
  9c:   00e0302d        move    a2,a3      ; | some registers for use below, still unnecessary though
  a0:   0100282d        move    a1,a4      ; | with different code below
  a4:   0120202d        move    a0,a5      ; |
  a8:   0140182d        move    v1,a6      ; |
  ac:   0160102d        move    v0,a7      ; /
  b0:   000e3800        sll     a3,t2,0x0  ; \
  b4:   afc70000        sw      a3,0(s8)   ; |
  b8:   000d3800        sll     a3,t1,0x0  ; |
  bc:   afc70004        sw      a3,4(s8)   ; |
  c0:   000c3800        sll     a3,t0,0x0  ; |
  c4:   afc70008        sw      a3,8(s8)   ; |
  c8:   00063000        sll     a2,a2,0x0  ; |
  cc:   afc6000c        sw      a2,12(s8)  ; | storing all register in args in local area on stack
  d0:   00052800        sll     a1,a1,0x0  ; | (using the set of pointlessly moved-to regs, above)
  d4:   afc50010        sw      a1,16(s8)  ; |
  d8:   00042000        sll     a0,a0,0x0  ; |
  dc:   afc40014        sw      a0,20(s8)  ; |
  e0:   00031800        sll     v1,v1,0x0  ; |
  e4:   afc30018        sw      v1,24(s8)  ; |
  e8:   00021000        sll     v0,v0,0x0  ; |
  ec:   afc2001c        sw      v0,28(s8)  ; |
  f0:   67bdff10        daddiu  sp,sp,-240 ; alloca(220) - with padding to guarantee alignment
  f4:   03a0102d        move    v0,sp      ; |
  f8:   6442000f        daddiu  v0,v0,15   ; | start of alloca()'d memory -> v1, by ...
  fc:   0002113a        dsrl    v0,v0,0x4  ; | ... using v0 as helper to align to 8b
 100:   00021138        dsll    v0,v0,0x4  ; |
 104:   0040182d        move    v1,v0      ; |
 108:   2402004c        li      v0,76      ; 'L' -> v0, and ...
 10c:   a0620000        sb      v0,0(v1)   ; ... store in local area (of alloca()'d space)
 110:   8fc40004        lw      a0,4(s8)   ; arg 0
 114:   8fc50008        lw      a1,8(s8)   ; arg 1
 118:   8fc6000c        lw      a2,12(s8)  ; arg 2
 11c:   8fc70010        lw      a3,16(s8)  ; arg 3
 120:   8fc80014        lw      a4,20(s8)  ; arg 4
 124:   8fc30018        lw      v1,24(s8)  ; prep arg 5 (pointlessly) to move to a5 below
 128:   8fc2001c        lw      v0,28(s8)  ; prep arg 5 (pointlessly) to move to a5 below
 12c:   0060482d        move    a5,v1      ; arg 5
 130:   0040502d        move    a6,v0      ; arg 6
 134:   df820000        ld      v0,0(gp)   ; addr of callee ...
 138:   0040c82d        move    t9,v0      ; ... -> t9
 13c:   0320f809        jalr    t9         ; return address -> ra, and call
 140:   00200825        move    at,at      ; branch delay slot (effectively nop)
 144:   03c0e82d        move    sp,s8      ; |
 148:   dfbf0038        ld      ra,56(sp)  ; |
 14c:   dfbe0030        ld      s8,48(sp)  ; |
 150:   dfbc0028        ld      gp,40(sp)  ; | epilog
 154:   67bd0040        daddiu  sp,sp,64   ; |
 158:   03e00008        jr      ra         ; |
 15c:   00200825        move    at,at      ; |         branch delay slot (effectively nop)

0000000000000160 <main>:
 160:   67bdffe0        daddiu  sp,sp,-32  ; |
 164:   ffbf0018        sd      ra,24(sp)  ; |
 168:   ffbe0010        sd      s8,16(sp)  ; | prolog
 16c:   ffbc0008        sd      gp,8(sp)   ; |
 170:   03a0f02d        move    s8,sp      ; |
 174:   3c1c0000        lui     gp,0x0     ; @@@ unsure
 178:   0399e02d        daddu   gp,gp,t9   ; @@@ unsure
 17c:   679c0000        daddiu  gp,gp,0    ; @@@ unsure
 180:   0000202d        move    a0,zero    ; arg 0
 184:   24050001        li      a1,1       ; arg 1
 188:   24060002        li      a2,2       ; arg 2
 18c:   24070003        li      a3,3       ; arg 3
 190:   24080004        li      a4,4       ; arg 4
 194:   24090005        li      a5,5       ; arg 5
 198:   240a0006        li      a6,6       ; arg 6
 19c:   240b0007        li      a7,7       ; arg 7
 1a0:   df820000        ld      v0,0(gp)   ; address of callee, to ...
 1a4:   0040c82d        move    t9,v0      ; ... t9
 1a8:   0320f809        jalr    t9         ; return address -> ra, and call
 1ac:   00200825        move    at,at      ; branch delay slot (effectively nop)
 1b0:   0000102d        move    v0,zero    ; return value
 1b4:   03c0e82d        move    sp,s8      ; |
 1b8:   dfbf0018        ld      ra,24(sp)  ; |
 1bc:   dfbe0010        ld      s8,16(sp)  ; |
 1c0:   dfbc0008        ld      gp,8(sp)   ; | epilog
 1c4:   67bd0020        daddiu  sp,sp,32   ; |
 1c8:   03e00008        jr      ra         ; |
 1cc:   00200825        move    at,at      ; |         branch delay slot (effectively nop)



; ------------- var args with ints and floats to see spilling (which remains only a?-a7 regs), b/c doubles are passed via them and floats are promoted to doubles in (...) ----------->

; #include <stdlib.h>
; #include <stdarg.h>
; 
; void leaf_call(int b, int c, int d, int e, float f, float g, int h, int i, float j)
; {
; }
; 
; void nonleaf_call(int a, ...)
; {
;     int b, c, d, e, h, i;
;     float f, g, j;
;     va_list ap;
;     va_start(ap, a);
;     b = va_arg(ap, int);
;     c = va_arg(ap, int);
;     d = va_arg(ap, int);
;     e = va_arg(ap, int);
;     f = (float)va_arg(ap, double);
;     g = (float)va_arg(ap, double);
;     h = va_arg(ap, int);
;     i = va_arg(ap, int);
;     j = (float)va_arg(ap, double);
;     /* use some local data */
;     *(char*)alloca(220) = 'L';
;     leaf_call(b, c, d, e, f, g, h, i, j);
; }
; 
; int main()
; {
;     nonleaf_call(0, 1, 2, 3, 4, 5.f, 6.f, 7, 8, 9.f);
;     return 0;
; }



; output from freebsd-12.0_r333647-malta_mips64elhf w/ gcc 4.2.1

0000000000000000 <leaf_call>:
   0:   67bdffd0        daddiu  sp,sp,-48
   4:   ffbe0028        sd      s8,40(sp)
   8:   ffbc0020        sd      gp,32(sp)
   c:   03a0f02d        move    s8,sp
  10:   3c1c0000        lui     gp,0x0
  14:   0399e02d        daddu   gp,gp,t9
  18:   679c0000        daddiu  gp,gp,0
  1c:   0080102d        move    v0,a0
  20:   00a0182d        move    v1,a1
  24:   00c0202d        move    a0,a2
  28:   00e0302d        move    a2,a3
  2c:   afc80010        sw      a4,16(s8)
  30:   afc90014        sw      a5,20(s8)
  34:   0140282d        move    a1,a6
  38:   0160382d        move    a3,a7
  3c:   00021000        sll     v0,v0,0x0
  40:   afc20000        sw      v0,0(s8)
  44:   00031000        sll     v0,v1,0x0
  48:   afc20004        sw      v0,4(s8)
  4c:   00041000        sll     v0,a0,0x0
  50:   afc20008        sw      v0,8(s8)
  54:   00061000        sll     v0,a2,0x0
  58:   afc2000c        sw      v0,12(s8)
  5c:   00051000        sll     v0,a1,0x0
  60:   afc20018        sw      v0,24(s8)
  64:   00071000        sll     v0,a3,0x0
  68:   afc2001c        sw      v0,28(s8)
  6c:   03c0e82d        move    sp,s8
  70:   dfbe0028        ld      s8,40(sp)
  74:   dfbc0020        ld      gp,32(sp)
  78:   03e00008        jr      ra
  7c:   67bd0030        daddiu  sp,sp,48

0000000000000080 <nonleaf_call>:
  80:   67bdff50        daddiu  sp,sp,-176
  84:   ffbf0060        sd      ra,96(sp)
  88:   ffbe0058        sd      s8,88(sp)
  8c:   ffbc0050        sd      gp,80(sp)
  90:   03a0f02d        move    s8,sp
  94:   3c1c0000        lui     gp,0x0
  98:   0399e02d        daddu   gp,gp,t9
  9c:   679c0000        daddiu  gp,gp,0
  a0:   ffc50078        sd      a1,120(s8)
  a4:   ffc60080        sd      a2,128(s8)
  a8:   ffc70088        sd      a3,136(s8)
  ac:   ffc80090        sd      a4,144(s8)
  b0:   ffc90098        sd      a5,152(s8)
  b4:   ffca00a0        sd      a6,160(s8)
  b8:   ffcb00a8        sd      a7,168(s8)
  bc:   0080102d        move    v0,a0
  c0:   00021000        sll     v0,v0,0x0
  c4:   afc20040        sw      v0,64(s8)
  c8:   67c200b0        daddiu  v0,s8,176
  cc:   6442ffc8        daddiu  v0,v0,-56
  d0:   ffc20038        sd      v0,56(s8)
  d4:   dfc30038        ld      v1,56(s8)
  d8:   64620008        daddiu  v0,v1,8
  dc:   ffc20038        sd      v0,56(s8)
  e0:   0060102d        move    v0,v1
  e4:   8c420000        lw      v0,0(v0)
  e8:   afc20030        sw      v0,48(s8)
  ec:   dfc30038        ld      v1,56(s8)
  f0:   64620008        daddiu  v0,v1,8
  f4:   ffc20038        sd      v0,56(s8)
  f8:   0060102d        move    v0,v1
  fc:   8c420000        lw      v0,0(v0)
 100:   afc2002c        sw      v0,44(s8)
 104:   dfc30038        ld      v1,56(s8)
 108:   64620008        daddiu  v0,v1,8
 10c:   ffc20038        sd      v0,56(s8)
 110:   0060102d        move    v0,v1
 114:   8c420000        lw      v0,0(v0)
 118:   afc20028        sw      v0,40(s8)
 11c:   dfc30038        ld      v1,56(s8)
 120:   64620008        daddiu  v0,v1,8
 124:   ffc20038        sd      v0,56(s8)
 128:   0060102d        move    v0,v1
 12c:   8c420000        lw      v0,0(v0)
 130:   afc20024        sw      v0,36(s8)
 134:   dfc30038        ld      v1,56(s8)
 138:   64620008        daddiu  v0,v1,8
 13c:   ffc20038        sd      v0,56(s8)
 140:   0060102d        move    v0,v1
 144:   dc420000        ld      v0,0(v0)
 148:   0040202d        move    a0,v0
 14c:   df990000        ld      t9,0(gp)
 150:   0320f809        jalr    t9
 154:   00000000        nop
 158:   afc20018        sw      v0,24(s8)
 15c:   dfc30038        ld      v1,56(s8)
 160:   64620008        daddiu  v0,v1,8
 164:   ffc20038        sd      v0,56(s8)
 168:   0060102d        move    v0,v1
 16c:   dc420000        ld      v0,0(v0)
 170:   0040202d        move    a0,v0
 174:   df990000        ld      t9,0(gp)
 178:   0320f809        jalr    t9
 17c:   00000000        nop
 180:   afc20014        sw      v0,20(s8)
 184:   dfc30038        ld      v1,56(s8)
 188:   64620008        daddiu  v0,v1,8
 18c:   ffc20038        sd      v0,56(s8)
 190:   0060102d        move    v0,v1
 194:   8c420000        lw      v0,0(v0)
 198:   afc20020        sw      v0,32(s8)
 19c:   dfc30038        ld      v1,56(s8)
 1a0:   64620008        daddiu  v0,v1,8
 1a4:   ffc20038        sd      v0,56(s8)
 1a8:   0060102d        move    v0,v1
 1ac:   8c420000        lw      v0,0(v0)
 1b0:   afc2001c        sw      v0,28(s8)
 1b4:   dfc30038        ld      v1,56(s8)
 1b8:   64620008        daddiu  v0,v1,8
 1bc:   ffc20038        sd      v0,56(s8)
 1c0:   0060102d        move    v0,v1
 1c4:   dc420000        ld      v0,0(v0)
 1c8:   0040202d        move    a0,v0
 1cc:   df990000        ld      t9,0(gp)
 1d0:   0320f809        jalr    t9
 1d4:   00000000        nop
 1d8:   afc20010        sw      v0,16(s8)
 1dc:   67bdff10        daddiu  sp,sp,-240
 1e0:   67a20010        daddiu  v0,sp,16
 1e4:   ffc20048        sd      v0,72(s8)
 1e8:   dfc30048        ld      v1,72(s8)
 1ec:   64620007        daddiu  v0,v1,7
 1f0:   000210fa        dsrl    v0,v0,0x3
 1f4:   000210f8        dsll    v0,v0,0x3
 1f8:   ffc20048        sd      v0,72(s8)
 1fc:   dfc30048        ld      v1,72(s8)
 200:   2402004c        li      v0,76
 204:   a0620000        sb      v0,0(v1)
 208:   8fc30030        lw      v1,48(s8)
 20c:   8fc5002c        lw      a1,44(s8)
 210:   8fc60028        lw      a2,40(s8)
 214:   8fc70024        lw      a3,36(s8)
 218:   8fca0020        lw      a6,32(s8)
 21c:   8fcb001c        lw      a7,28(s8)
 220:   8fc20010        lw      v0,16(s8)
 224:   afa20000        sw      v0,0(sp)
 228:   0060202d        move    a0,v1
 22c:   8fc80018        lw      a4,24(s8)
 230:   8fc90014        lw      a5,20(s8)
 234:   df990000        ld      t9,0(gp)
 238:   0320f809        jalr    t9
 23c:   00000000        nop
 240:   03c0e82d        move    sp,s8
 244:   dfbf0060        ld      ra,96(sp)
 248:   dfbe0058        ld      s8,88(sp)
 24c:   dfbc0050        ld      gp,80(sp)
 250:   03e00008        jr      ra
 254:   67bd00b0        daddiu  sp,sp,176

0000000000000258 <main>:
 258:   67bdffd0        daddiu  sp,sp,-48
 25c:   ffbf0020        sd      ra,32(sp)
 260:   ffbe0018        sd      s8,24(sp)
 264:   ffbc0010        sd      gp,16(sp)
 268:   03a0f02d        move    s8,sp
 26c:   3c1c0000        lui     gp,0x0
 270:   0399e02d        daddu   gp,gp,t9
 274:   679c0000        daddiu  gp,gp,0
 278:   df830000        ld      v1,0(gp)
 27c:   dc630000        ld      v1,0(v1)
 280:   df8a0000        ld      a6,0(gp)
 284:   dd4a0000        ld      a6,0(a6)
 288:   24020008        li      v0,8
 28c:   ffa20000        sd      v0,0(sp)
 290:   df820000        ld      v0,0(gp)
 294:   dc420000        ld      v0,0(v0)
 298:   ffa20008        sd      v0,8(sp)
 29c:   0000202d        move    a0,zero
 2a0:   24050001        li      a1,1
 2a4:   24060002        li      a2,2
 2a8:   24070003        li      a3,3
 2ac:   24080004        li      a4,4
 2b0:   0060482d        move    a5,v1
 2b4:   240b0007        li      a7,7
 2b8:   df990000        ld      t9,0(gp)
 2bc:   0320f809        jalr    t9
 2c0:   00000000        nop
 2c4:   03c0e82d        move    sp,s8
 2c8:   dfbf0020        ld      ra,32(sp)
 2cc:   dfbe0018        ld      s8,24(sp)
 2d0:   dfbc0010        ld      gp,16(sp)
 2d4:   03e00008        jr      ra
 2d8:   67bd0030        daddiu  sp,sp,48
 2dc:   00000000        nop



; output from debian-sid_20150616-malta_mips64el_n64 w/ gcc 4.9.2

0000000000000000 <leaf_call>:
   0:   67bdffd0        daddiu  sp,sp,-48
   4:   ffbe0028        sd      s8,40(sp)
   8:   03a0f02d        move    s8,sp
   c:   0080482d        move    a5,a0
  10:   00a0402d        move    a4,a1
  14:   00c0282d        move    a1,a2
  18:   00e0202d        move    a0,a3
  1c:   e7d00010        swc1    $f16,16(s8)
  20:   e7d10014        swc1    $f17,20(s8)
  24:   0140182d        move    v1,a6
  28:   0160102d        move    v0,a7
  2c:   00093000        sll     a2,a5,0x0
  30:   afc60000        sw      a2,0(s8)
  34:   00083000        sll     a2,a4,0x0
  38:   afc60004        sw      a2,4(s8)
  3c:   00052800        sll     a1,a1,0x0
  40:   afc50008        sw      a1,8(s8)
  44:   00042000        sll     a0,a0,0x0
  48:   afc4000c        sw      a0,12(s8)
  4c:   00031800        sll     v1,v1,0x0
  50:   afc30018        sw      v1,24(s8)
  54:   00021000        sll     v0,v0,0x0
  58:   afc2001c        sw      v0,28(s8)
  5c:   03c0e82d        move    sp,s8
  60:   dfbe0028        ld      s8,40(sp)
  64:   67bd0030        daddiu  sp,sp,48
  68:   03e00008        jr      ra
  6c:   00200825        move    at,at

0000000000000070 <nonleaf_call>:
  70:   67bdff50        daddiu  sp,sp,-176  ; |         leaving 64b extra space adjacent to prev frame's param area for spilling
  74:   ffbf0068        sd      ra,104(sp)  ; |
  78:   ffbe0060        sd      s8,96(sp)   ; | prolog
  7c:   ffbc0058        sd      gp,88(sp)   ; |
  80:   03a0f02d        move    s8,sp       ; |
  84:   3c1c0000        lui     gp,0x0      ; @@@ unsure
  88:   0399e02d        daddu   gp,gp,t9    ; @@@ unsure
  8c:   679c0000        daddiu  gp,gp,0     ; @@@ unsure
  90:   ffc50078        sd      a1,120(s8)  ; |
  94:   ffc60080        sd      a2,128(s8)  ; |
  98:   ffc70088        sd      a3,136(s8)  ; |
  9c:   ffc80090        sd      a4,144(s8)  ; | in args 1,2,3,4,5,6,7 -> spill area in current frame (adjacent to prev frame's param area)
  a0:   ffc90098        sd      a5,152(s8)  ; |
  a4:   ffca00a0        sd      a6,160(s8)  ; |
  a8:   ffcb00a8        sd      a7,168(s8)  ; /
  ac:   0080102d        move    v0,a0       ; \
  b0:   00021000        sll     v0,v0,0x0   ; |
  b4:   afc20040        sw      v0,64(s8)   ; |
  b8:   67c200b0        daddiu  v0,s8,176   ; |
  bc:   6442ffc8        daddiu  v0,v0,-56   ; |
  c0:   ffc20038        sd      v0,56(s8)   ; |
  c4:   dfc20038        ld      v0,56(s8)   ; |
  c8:   64430008        daddiu  v1,v0,8     ; |
  cc:   ffc30038        sd      v1,56(s8)   ; |
  d0:   8c420000        lw      v0,0(v0)    ; |
  d4:   afc20010        sw      v0,16(s8)   ; |
  d8:   dfc20038        ld      v0,56(s8)   ; |
  dc:   64430008        daddiu  v1,v0,8     ; |
  e0:   ffc30038        sd      v1,56(s8)   ; |
  e4:   8c420000        lw      v0,0(v0)    ; |
  e8:   afc20014        sw      v0,20(s8)   ; |
  ec:   dfc20038        ld      v0,56(s8)   ; |
  f0:   64430008        daddiu  v1,v0,8     ; |
  f4:   ffc30038        sd      v1,56(s8)   ; |
  f8:   8c420000        lw      v0,0(v0)    ; |
  fc:   afc20018        sw      v0,24(s8)   ; |
 100:   dfc20038        ld      v0,56(s8)   ; |
 104:   64430008        daddiu  v1,v0,8     ; |
 108:   ffc30038        sd      v1,56(s8)   ; |
 10c:   8c420000        lw      v0,0(v0)    ; |
 110:   afc2001c        sw      v0,28(s8)   ; |
 114:   dfc20038        ld      v0,56(s8)   ; |
 118:   64430008        daddiu  v1,v0,8     ; |
 11c:   ffc30038        sd      v1,56(s8)   ; |
 120:   dc420000        ld      v0,0(v0)    ; |
 124:   44a20000        dmtc1   v0,$f0      ; | vararg stuff: pointer to beginning of spill area (constantly
 128:   46200020        cvt.s.d $f0,$f0     ; | stored and reloaded) to iterate over all params which are stored 
 12c:   44020000        mfc1    v0,$f0      ; | to a local space on stack, which they are refetched from, below
 130:   afc20020        sw      v0,32(s8)   ; | (see similar mips32 examples for detailed analysis)
 134:   dfc20038        ld      v0,56(s8)   ; |
 138:   64430008        daddiu  v1,v0,8     ; |
 13c:   ffc30038        sd      v1,56(s8)   ; |
 140:   dc420000        ld      v0,0(v0)    ; |
 144:   44a20000        dmtc1   v0,$f0      ; |
 148:   46200020        cvt.s.d $f0,$f0     ; |
 14c:   44020000        mfc1    v0,$f0      ; |
 150:   afc20024        sw      v0,36(s8)   ; |
 154:   dfc20038        ld      v0,56(s8)   ; |
 158:   64430008        daddiu  v1,v0,8     ; |
 15c:   ffc30038        sd      v1,56(s8)   ; |
 160:   8c420000        lw      v0,0(v0)    ; |
 164:   afc20028        sw      v0,40(s8)   ; |
 168:   dfc20038        ld      v0,56(s8)   ; |
 16c:   64430008        daddiu  v1,v0,8     ; |
 170:   ffc30038        sd      v1,56(s8)   ; |
 174:   8c420000        lw      v0,0(v0)    ; |
 178:   afc2002c        sw      v0,44(s8)   ; |
 17c:   dfc20038        ld      v0,56(s8)   ; |
 180:   64430008        daddiu  v1,v0,8     ; |
 184:   ffc30038        sd      v1,56(s8)   ; |
 188:   dc420000        ld      v0,0(v0)    ; |
 18c:   44a20000        dmtc1   v0,$f0      ; |
 190:   46200020        cvt.s.d $f0,$f0     ; |
 194:   44020000        mfc1    v0,$f0      ; |
 198:   afc20030        sw      v0,48(s8)   ; |
 19c:   67bdff10        daddiu  sp,sp,-240  ; alloca(220) - with padding to guarantee alignment
 1a0:   67a20010        daddiu  v0,sp,16    ; |
 1a4:   6442000f        daddiu  v0,v0,15    ; |
 1a8:   0002113a        dsrl    v0,v0,0x4   ; | start of alloca()'d memory -> v1, by ...
 1ac:   00021138        dsll    v0,v0,0x4   ; | ... using v0 as helper to align to 16b
 1b0:   0040182d        move    v1,v0       ; |
 1b4:   2402004c        li      v0,76       ; 'L' -> v0, and ...
 1b8:   a0620000        sb      v0,0(v1)    ; ... store in local area (of alloca()'d space)
 1bc:   8fc40010        lw      a0,16(s8)   ; arg 0
 1c0:   8fc50014        lw      a1,20(s8)   ; arg 1
 1c4:   8fc60018        lw      a2,24(s8)   ; arg 2
 1c8:   8fc7001c        lw      a3,28(s8)   ; arg 3
 1cc:   8fc80028        lw      a4,40(s8)   ; prepare arg 6 (using a4 only as temp reg), to move to a6 below
 1d0:   8fc3002c        lw      v1,44(s8)   ; prepare arg 7 (pointlessly) to move to a7 below
 1d4:   8fc20030        lw      v0,48(s8)   ; arg 8, and ...
 1d8:   afa20000        sw      v0,0(sp)    ; ... "pushed" onto stack
 1dc:   c7d00020        lwc1    $f16,32(s8) ; arg 4 (so skipping f12-f15)
 1e0:   c7d10024        lwc1    $f17,36(s8) ; arg 5 (so skipping f12-f15)
 1e4:   0100502d        move    a6,a4       ; arg 6 (from a4 used as temp reg, pointlessly)
 1e8:   0060582d        move    a7,v1       ; arg 7
 1ec:   df820000        ld      v0,0(gp)    ; address of callee, to ...
 1f0:   0040c82d        move    t9,v0       ; ... t9
 1f4:   0320f809        jalr    t9          ; return address -> ra, and call
 1f8:   00200825        move    at,at       ; branch delay slot (effectively nop)
 1fc:   03c0e82d        move    sp,s8       ; |
 200:   dfbf0068        ld      ra,104(sp)  ; |
 204:   dfbe0060        ld      s8,96(sp)   ; |
 208:   dfbc0058        ld      gp,88(sp)   ; | epilog
 20c:   67bd00b0        daddiu  sp,sp,176   ; |
 210:   03e00008        jr      ra          ; |
 214:   00200825        move    at,at       ; |         branch delay slot (effectively nop)

0000000000000218 <main>:
 218:   67bdffd0        daddiu  sp,sp,-48   ; |
 21c:   ffbf0028        sd      ra,40(sp)   ; |
 220:   ffbe0020        sd      s8,32(sp)   ; | prolog
 224:   ffbc0018        sd      gp,24(sp)   ; |
 228:   03a0f02d        move    s8,sp       ; |
 22c:   3c1c0000        lui     gp,0x0      ; unsure@@@
 230:   0399e02d        daddu   gp,gp,t9    ; unsure@@@
 234:   679c0000        daddiu  gp,gp,0     ; unsure@@@
 238:   df820000        ld      v0,0(gp)    ; arg 6 (float promoted to double), from static data (0 b/c objdmp is from .o, not final linked exec), ...
 23c:   d4410000        ldc1    $f1,0(v0)   ; ... to f1
 240:   df820000        ld      v0,0(gp)    ; arg 5 (float promoted to double), from static data (0 b/c objdmp is from .o, not final linked exec), ...
 244:   d4400000        ldc1    $f0,0(v0)   ; ... to f0
 248:   24020008        li      v0,8        ; arg 8, ...
 24c:   ffa20000        sd      v0,0(sp)    ; ... "pushed" onto stack
 250:   df820000        ld      v0,0(gp)    ; arg 9 (float promoted to double), from static data (0 b/c objdmp is from .o, not final linked exec), ...
 254:   dc420000        ld      v0,0(v0)    ; ... via v0 ...
 258:   ffa20008        sd      v0,8(sp)    ; ... "pushed" onto stack
 25c:   0000202d        move    a0,zero     ; arg 0
 260:   24050001        li      a1,1        ; arg 1
 264:   24060002        li      a2,2        ; arg 2
 268:   24070003        li      a3,3        ; arg 3
 26c:   24080004        li      a4,4        ; arg 4
 270:   44290800        dmfc1   a5,$f1      ; arg 5 (note: passed in a5 b/c vararg)
 274:   442a0000        dmfc1   a6,$f0      ; arg 6 (note: passed in a6 b/c vararg)
 278:   240b0007        li      a7,7        ; arg 7
 27c:   df820000        ld      v0,0(gp)    ; address of callee, to ...
 280:   0040c82d        move    t9,v0       ; ... t9
 284:   0320f809        jalr    t9          ; return address -> ra, and call
 288:   00200825        move    at,at       ; branch delay slot (effectively nop)
 28c:   03c0e82d        move    sp,s8       ; |
 290:   dfbf0028        ld      ra,40(sp)   ; |
 294:   dfbe0020        ld      s8,32(sp)   ; |
 298:   dfbc0018        ld      gp,24(sp)   ; |
 29c:   67bd0030        daddiu  sp,sp,48    ; | epilog
 2a0:   03e00008        jr      ra          ; |
 2a4:   00200825        move    at,at       ; |         branch delay slot (effectively nop)
 2a8:   00200825        move    at,at       ; |         ? @@@
 2ac:   00200825        move    at,at       ; |         ? @@@

; vim: ft=asm