base/asm-common.h: Provide default frame pointer registers.

[catacomb] / base / asm-common.h

diff --git a/base/asm-common.h b/base/asm-common.h
index 8e51ea3..1dfb633 100644 (file)
--- a/base/asm-common.h
+++ b/base/asm-common.h
@@ -24,6 +24,9 @@
 /// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 /// MA 02111-1307, USA.
 
+#ifndef CATACOMB_ASM_COMMON_H
+#define CATACOMB_ASM_COMMON_H
+
 ///--------------------------------------------------------------------------
 /// General definitions.
 
@@ -217,11 +220,11 @@ name:
 #  define INTADDR__1(addr, got) addr
 #endif
 
-// Permutations for SIMD instructions.  SHUF(D, C, B, A) is an immediate,
-// suitable for use in `pshufd' or `shufpd', which copies element D
-// (0 <= D < 4) of the source to element 3 of the destination, element C to
-// element 2, element B to element 1, and element A to element 0.
-#define SHUF(d, c, b, a) (64*(d) + 16*(c) + 4*(b) + (a))
+// Permutations for SIMD instructions.  SHUF(A, B, C, D) is an immediate,
+// suitable for use in `pshufd' or `shufpd', which copies element A
+// (0 <= A < 4) of the source to element 0 of the destination, element B to
+// element 1, element C to element 2, and element D to element 3.
+#define SHUF(a, b, c, d) ((a) + 4*(b) + 16*(c) + 64*(d))
 
 // Map register names to their individual pieces.
 
@@ -255,10 +258,10 @@ name:
 #  define _DECOR_abcd_q(reg) r##reg##x
 #endif
 
-#define _DECOR_xp_b(reg) reg##l
 #define _DECOR_xp_w(reg) reg
 #define _DECOR_xp_d(reg) e##reg
 #if CPUFAM_AMD64
+#  define _DECOR_xp_b(reg) reg##l
 #  define _DECOR_xp_q(reg) r##reg
 #endif
 
@@ -276,22 +279,33 @@ name:
 #  define _DECOR_rn_r(reg) reg
 #endif
 
+#define _DECOR_mem_b(addr) byte ptr addr
+#define _DECOR_mem_w(addr) word ptr addr
+#define _DECOR_mem_d(addr) dword ptr addr
+#if CPUFAM_AMD64
+#  define _DECOR_mem_q(addr) qword ptr addr
+#endif
+
+#define _DECOR_imm_b(imm) byte imm
+#define _DECOR_imm_w(imm) word imm
+#define _DECOR_imm_d(imm) dword imm
+#if CPUFAM_AMD64
+#  define _DECOR_imm_q(imm) qword imm
+#endif
+
 #if CPUFAM_X86
 #  define _DECOR_abcd_r(reg) e##reg##x
 #  define _DECOR_xp_r(reg) e##reg
 #  define _DECOR_ip_r(reg) e##reg
+#  define _DECOR_mem_r(addr) dword ptr addr
+#  define _DECOR_imm_r(imm) dword imm
 #endif
 #if CPUFAM_AMD64
 #  define _DECOR_abcd_r(reg) r##reg##x
 #  define _DECOR_xp_r(reg) r##reg
 #  define _DECOR_ip_r(reg) r##reg
-#endif
-
-#define _DECOR_mem_b(addr) byte ptr addr
-#define _DECOR_mem_w(addr) word ptr addr
-#define _DECOR_mem_d(addr) dword ptr addr
-#if CPUFAM_AMD64
-#  define _DECOR_mem_q(addr) qword ptr addr
+#  define _DECOR_mem_r(addr) qword ptr addr
+#  define _DECOR_imm_r(imm) qword imm
 #endif
 
 // R_r(decor) applies decoration decor to register r, which is an internal
@@ -321,6 +335,9 @@ name:
 // address addr (which should supply its own square-brackets).
 #define MEM(decor, addr) _DECOR(mem, decor, addr)
 
+// Refer to an immediate datum of the type implied by decor.
+#define IMM(decor, imm) _DECOR(mem, decor, imm)
+
 // Applies decoration decor to assembler-level register name reg.
 #define _REGFORM(reg, decor) _GLUE(_REGFORM_, reg)(decor)
 
@@ -436,7 +453,7 @@ name:
 #define WHOLE(reg) _REGFORM(reg, r)
 
 // Stack management and unwinding.
-.macro setfp   fp, offset = 0
+.macro setfp   fp=R_bp(r), offset=0
   .if \offset == 0
        mov     \fp, R_sp(r)
 #if __ELF__
@@ -459,7 +476,7 @@ name:
        .macro dropfp; _dropfp  \fp, \offset; .endm
 .endm
 
-.macro _dropfp fp, offset = 0
+.macro _dropfp fp, offset=0
   .if \offset == 0
        mov     R_sp(r), \fp
 #if __ELF__
@@ -706,12 +723,12 @@ name:
 #if WANT_PIC
        ldr\cond \reg, .L$_leaextq$\@
 .L$_leaextq_pc$\@:
-       .if     .L$_pcoff == 8
+  .if .L$_pcoff == 8
        ldr\cond \reg, [pc, \reg]
-       .else
+  .else
        add\cond \reg, pc
        ldr\cond \reg, [\reg]
-       .endif
+  .endif
   _LIT
        .balign 4
 .L$_leaextq$\@:
@@ -972,7 +989,7 @@ name:
 #define QQ(qlo, qhi) D0(qlo)-D1(qhi)
 
 // Stack management and unwinding.
-.macro setfp   fp, offset = 0
+.macro setfp   fp=r11, offset=0
   .if \offset == 0
        mov     \fp, sp
          .setfp \fp, sp
@@ -984,7 +1001,7 @@ name:
        .L$_frameptr_p = -1
 .endm
 
-.macro _dropfp fp, offset = 0
+.macro _dropfp fp, offset=0
   .if \offset == 0
        mov     sp, \fp
   .else
@@ -1057,7 +1074,7 @@ name:
 .endm
 
 // Stack management and unwinding.
-.macro setfp   fp, offset = 0
+.macro setfp   fp=x29, offset=0
   // If you're just going through the motions with a fixed-size stack frame,
   // then you want to say `add x29, sp, #OFFSET' directly, which will avoid
   // pointlessly restoring sp later.
@@ -1073,7 +1090,7 @@ name:
        .L$_frameptr_p = -1
 .endm
 
-.macro _dropfp fp, offset = 0
+.macro _dropfp fp, offset=0
   .if \offset == 0
        mov     sp, \fp
          .cfi_def_cfa_register sp
@@ -1096,8 +1113,8 @@ name:
          .cfi_adjust_cfa_offset -\n
 .endm
 
-.macro pushreg x, y=
-  .ifeqs "\y", ""
+.macro pushreg x, y=nil
+  .ifeqs "\y", "nil"
        str     \x, [sp, #-16]!
          .cfi_adjust_cfa_offset +16
          .cfi_rel_offset \x, 0
@@ -1109,8 +1126,8 @@ name:
   .endif
 .endm
 
-.macro popreg  x, y=
-  .ifeqs "\y", ""
+.macro popreg  x, y=nil
+  .ifeqs "\y", "nil"
        ldr     \x, [sp], #16
          .cfi_restore \x
          .cfi_adjust_cfa_offset -16
@@ -1122,9 +1139,9 @@ name:
   .endif
 .endm
 
-.macro savereg x, y, z=
-  .ifeqs "\z", ""
-       str     \x, [sp, #\y]
+.macro savereg x, y, z=nil
+  .ifeqs "\z", "nil"
+       str     \x, [sp, \y]
          .cfi_rel_offset \x, \y
   .else
        stp     \x, \y, [sp, #\z]
@@ -1133,9 +1150,9 @@ name:
   .endif
 .endm
 
-.macro rstrreg x, y, z=
-  .ifeqs "\z", ""
-       ldr     \x, [sp, #\y]
+.macro rstrreg x, y, z=nil
+  .ifeqs "\z", "nil"
+       ldr     \x, [sp, \y]
          .cfi_restore \x
   .else
        ldp     \x, \y, [sp, #\z]
@@ -1181,3 +1198,5 @@ name:
 #endif
 
 ///----- That's all, folks --------------------------------------------------
+
+#endif