diff options
Diffstat (limited to 'dynasm/dasm_x86.h')
| -rw-r--r-- | dynasm/dasm_x86.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/dynasm/dasm_x86.h b/dynasm/dasm_x86.h index f9260b0c..8ae911df 100644 --- a/dynasm/dasm_x86.h +++ b/dynasm/dasm_x86.h @@ -194,12 +194,13 @@ void dasm_put(Dst_DECL, int start, ...) switch (action) { case DASM_DISP: if (n == 0) { if ((mrm&7) == 4) mrm = p[-2]; if ((mrm&7) != 5) break; } - case DASM_IMM_DB: if (((n+128)&-256) == 0) goto ob; + /* fallthrough */ + case DASM_IMM_DB: if (((n+128)&-256) == 0) goto ob; /* fallthrough */ case DASM_REL_A: /* Assumes ptrdiff_t is int. !x64 */ case DASM_IMM_D: ofs += 4; break; case DASM_IMM_S: CK(((n+128)&-256) == 0, RANGE_I); goto ob; case DASM_IMM_B: CK((n&-256) == 0, RANGE_I); ob: ofs++; break; - case DASM_IMM_WB: if (((n+128)&-256) == 0) goto ob; + case DASM_IMM_WB: if (((n+128)&-256) == 0) goto ob; /* fallthrough */ case DASM_IMM_W: CK((n&-65536) == 0, RANGE_I); ofs += 2; break; case DASM_SPACE: p++; ofs += n; break; case DASM_SETLABEL: b[pos-2] = -0x40000000; break; /* Neg. label ofs. */ @@ -323,11 +324,14 @@ int dasm_link(Dst_DECL, size_t *szp) pos += 2; break; } + /* fallthrough */ case DASM_SPACE: case DASM_IMM_LG: case DASM_VREG: p++; + /* fallthrough */ case DASM_DISP: case DASM_IMM_S: case DASM_IMM_B: case DASM_IMM_W: case DASM_IMM_D: case DASM_IMM_WB: case DASM_IMM_DB: case DASM_SETLABEL: case DASM_REL_A: case DASM_IMM_PC: pos++; break; case DASM_LABEL_LG: p++; + /* fallthrough */ case DASM_LABEL_PC: b[pos++] += ofs; break; /* Fix label offset. */ case DASM_ALIGN: ofs -= (b[pos++]+ofs)&*p++; break; /* Adjust ofs. */ case DASM_EXTERN: p += 2; break; @@ -385,16 +389,20 @@ int dasm_encode(Dst_DECL, void *buffer) if (mrm != 5) { mm[-1] -= 0x80; break; } } if (((n+128) & -256) != 0) goto wd; else mm[-1] -= 0x40; } + /* fallthrough */ case DASM_IMM_S: case DASM_IMM_B: wb: dasmb(n); break; case DASM_IMM_DB: if (((n+128)&-256) == 0) { db: if (!mark) mark = cp; mark[-2] += 2; mark = NULL; goto wb; } else mark = NULL; + /* fallthrough */ case DASM_IMM_D: wd: dasmd(n); break; case DASM_IMM_WB: if (((n+128)&-256) == 0) goto db; else mark = NULL; + /* fallthrough */ case DASM_IMM_W: dasmw(n); break; case DASM_VREG: { int t = *p++; if (t >= 2) n<<=3; cp[-1] |= n; break; } case DASM_REL_LG: p++; if (n >= 0) goto rel_pc; b++; n = (int)(ptrdiff_t)D->globals[-n]; + /* fallthrough */ case DASM_REL_A: rel_a: n -= (unsigned int)(ptrdiff_t)(cp+4); goto wd; /* !x64 */ case DASM_REL_PC: rel_pc: { @@ -407,6 +415,7 @@ int dasm_encode(Dst_DECL, void *buffer) } case DASM_IMM_LG: p++; if (n < 0) { n = (int)(ptrdiff_t)D->globals[-n]; goto wd; } + /* fallthrough */ case DASM_IMM_PC: { int *pb = DASM_POS2PTR(D, n); n = *pb < 0 ? pb[1] : (*pb + (int)(ptrdiff_t)base); @@ -427,6 +436,7 @@ int dasm_encode(Dst_DECL, void *buffer) case DASM_EXTERN: n = DASM_EXTERN(Dst, cp, p[1], *p); p += 2; goto wd; case DASM_MARK: mark = cp; break; case DASM_ESC: action = *p++; + /* fallthrough */ default: *cp++ = action; break; case DASM_SECTION: case DASM_STOP: goto stop; } |