diff options
| author | Daniel Borca <dborca@users.sourceforge.net> | 2004-03-31 08:31:41 +0000 |
|---|---|---|
| committer | Daniel Borca <dborca@users.sourceforge.net> | 2004-03-31 08:31:41 +0000 |
| commit | 13822537a7b0149034edee1b43ac51fd62dcb977 (patch) | |
| tree | 7c6d55be621a75118944e1b13dd8de7d213d7bd3 | |
| parent | b48c575983dcd6bbffa3925565d45cadbb95fae2 (diff) | |
fine-tuning x86 gcc codegen
| -rw-r--r-- | src/mesa/tnl/t_vtx_x86.c | 27 | ||||
| -rw-r--r-- | src/mesa/tnl/t_vtx_x86_gcc.S | 28 |
2 files changed, 35 insertions, 20 deletions
diff --git a/src/mesa/tnl/t_vtx_x86.c b/src/mesa/tnl/t_vtx_x86.c index d082ef82bb..6ff1a52743 100644 --- a/src/mesa/tnl/t_vtx_x86.c +++ b/src/mesa/tnl/t_vtx_x86.c @@ -109,6 +109,25 @@ do { \ +#define FIXUPREL( CODE, KNOWN_OFFSET, CHECKVAL, NEWVAL )\ +do { \ + GLuint subst = 0x10101010 + CHECKVAL; \ + \ + if (DONT_KNOW_OFFSETS) { \ + while (*(int *)(CODE+offset) != subst) offset++; \ + *(int *)(CODE+offset) = (int)(NEWVAL) - ((int)(CODE)+offset) - 4; \ + if (0) fprintf(stderr, "%s/%d: offset %d, new value: 0x%x\n", __FILE__, __LINE__, offset, (int)(NEWVAL) - ((int)(CODE)+offset) - 4); \ + offset += 4; \ + } \ + else { \ + int *icode = (int *)(CODE+KNOWN_OFFSET); \ + assert (*icode == subst); \ + *icode = (int)(NEWVAL) - (int)(icode) - 4; \ + } \ +} while (0) + + + /* Build specialized versions of the immediate calls on the fly for * the current state. Generic x86 versions. @@ -125,7 +144,7 @@ static struct _tnl_dynfn *makeX86Vertex1fv( GLcontext *ctx, int vertex_size ) FIXUP(dfn->code, 0, 0, (int)&tnl->vtx.vbptr); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); - FIXUP(dfn->code, 0, 4, (int)¬ify); + FIXUPREL(dfn->code, 0, 4, (int)¬ify); return dfn; } @@ -141,7 +160,7 @@ static struct _tnl_dynfn *makeX86Vertex2fv( GLcontext *ctx, int vertex_size ) FIXUP(dfn->code, 0, 0, (int)&tnl->vtx.vbptr); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); - FIXUP(dfn->code, 0, 4, (int)¬ify); + FIXUPREL(dfn->code, 0, 4, (int)¬ify); return dfn; } @@ -157,7 +176,7 @@ static struct _tnl_dynfn *makeX86Vertex3fv( GLcontext *ctx, int vertex_size ) FIXUP(dfn->code, 0, 0, (int)&tnl->vtx.vbptr); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); - FIXUP(dfn->code, 0, 4, (int)¬ify); + FIXUPREL(dfn->code, 0, 4, (int)¬ify); return dfn; } @@ -172,7 +191,7 @@ static struct _tnl_dynfn *makeX86Vertex4fv( GLcontext *ctx, int vertex_size ) FIXUP(dfn->code, 0, 0, (int)&tnl->vtx.vbptr); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); FIXUP(dfn->code, 0, 3, (int)&tnl->vtx.counter); - FIXUP(dfn->code, 0, 4, (int)¬ify); + FIXUPREL(dfn->code, 0, 4, (int)¬ify); return dfn; } diff --git a/src/mesa/tnl/t_vtx_x86_gcc.S b/src/mesa/tnl/t_vtx_x86_gcc.S index c06fef6c47..937b53bfd3 100644 --- a/src/mesa/tnl/t_vtx_x86_gcc.S +++ b/src/mesa/tnl/t_vtx_x86_gcc.S @@ -66,10 +66,9 @@ GLOBL ( _x86_Vertex1fv ) pop %edi dec %edx // counter-- movl %edx, SUBST(3) // 0x3 --> counter - je .5 // if (counter != 0) - ret // return -.5: mov $SUBST(4), %eax // else notify() - jmp *%eax // jmp $0x10101014 doesn't seem to work + .short 0x840f // if (counter == 0) + .long SUBST(4) // notify() + ret // return GLOBL ( _x86_Vertex1fv_end ) @@ -94,10 +93,9 @@ GLOBL ( _x86_Vertex2fv ) pop %edi dec %edx // counter-- movl %edx, SUBST(3) // save counter - je .6 // if (counter != 0) - ret // return -.6: mov $SUBST(4), %eax // else notify() - jmp *%eax // jmp $0x10101014 doesn't seem to work + .short 0x840f // if (counter == 0) + .long SUBST(4) // notify() + ret // return GLOBL ( _x86_Vertex2fv_end ) .align 4 @@ -123,10 +121,9 @@ GLOBL ( _x86_Vertex3fv ) pop %edi dec %edx // counter-- movl %edx, SUBST(3) // save counter - je .7 // if (counter != 0) - ret // return -.7: mov $SUBST(4), %eax // else notify() - jmp *%eax // jmp $0x10101014 doesn't seem to work + .short 0x840f // if (counter == 0) + .long SUBST(4) // notify() + ret // return GLOBL ( _x86_Vertex3fv_end ) @@ -155,10 +152,9 @@ GLOBL ( _x86_Vertex4fv ) pop %edi dec %edx // counter-- movl %edx, SUBST(3) // save counter - je .6 // if (counter != 0) - ret // return -.8: mov $SUBST(4), %eax // else notify() - jmp *%eax // jmp $0x10101014 doesn't seem to work + .short 0x840f // if (counter == 0) + .long SUBST(4) // notify() + ret // return GLOBL ( _x86_Vertex4fv_end ) |