X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/3c0490d192453fad6827c29dfc21af2587772dad..1f1fd8845afef39000b08a0f79ff14fae7690d41:/base/asm-common.h

diff --git a/base/asm-common.h b/base/asm-common.h
index 040250ba..642820af 100644
--- a/base/asm-common.h
+++ b/base/asm-common.h
@@ -286,17 +286,26 @@ name:
 #  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
 #  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
@@ -326,6 +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)
 
@@ -441,7 +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__
@@ -464,7 +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__
@@ -711,12 +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$_leaextq$\@:
@@ -977,7 +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
@@ -989,7 +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
@@ -1010,12 +1022,12 @@ name:
 .endm
 
 .macro	pushreg	rr:vararg
-	stmfd	sp!, {\rr}
+	push	{\rr}
 	  .save {\rr}
 .endm
 
 .macro	popreg	rr:vararg
-	ldmfd	sp!, {\rr}
+	pop	{\rr}
 .endm
 
 .macro	pushvfp rr:vararg
@@ -1062,7 +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.
@@ -1078,7 +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
@@ -1101,8 +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
@@ -1114,8 +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
@@ -1127,9 +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]
@@ -1138,9 +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]